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fea tures fully integrated octal t1/e1 short haul line interface which supports 100 w t1 twisted pair, 120 w e1 twisted pair and 75 w e1 coaxial applications selectable single rail or dual rail mode and ami or hdb3/b8zs line encoder/decoder built-in transmit pre-equalization meets g.703 & t1.102 selectable transmit/receive jitter attenuator meets etsi ctr12/ 13, itu g.736, g.742,g.823 and at&t pub 62411 specifications sonet/sdh optimized jitter attenuator meets itu g.783 map- ping jitter specification digital/analog los detector meets itu g.775, ets 300 233 and t1.231 oct al t1/e1 short haul line interf ace unit IDT82V2048 function al bl ock dia gram jitter attenuator jitter attenuator b8zs/ hdb3/ami decoder b8zs/ hdb3/ami encoder remote loopback analog loopback slicer peak detector clk&data recovery (dpll) line driver waveform shaper iblc detector los detector iblc generator digital loopback ais detector one of eight identical channels register file control interface clock generator mode[2:0] cs /jas ts2/sclk/ale/ as ts1/ rd /r/ w ts0/sdi/ wr / ds sd0/rdy/ ack int lp/d/ad[7:0] mc/a[4:0] mclk trst tck tms tdi tdo jtag tap rtipn rringn ttipn tringn vdd io vddt vddd vdda losn rclkn rdn/rdpn cvn/rdnn tclkn bpvin/tdnn tdn/tdpn g.772 monitor transmit all ones oe clke figure - 1. block diagram idt and the idt logo are trademarks of integrated device technology, inc. industrial temperature ranges 1 september 2004 dsc-6037/12 ? 2004 integrated device technology, inc. itu g.772 non-intrusive monitoring for in-service testing for any one of channel1 to channel7 low impedance transmit drivers with tri-state selectable hardware and parallel/serial host interface local, remote and inband loopback test functions hitless protection switching (hps) for 1 to 1 protection with- out relays jtag boundary scan for board test 3.3v supply with 5v tolerant i/o low power consumption operating temperature range: -40c to +85c available in 144-pin thin quad flat pack (tqfp_144_da) and 160-pin plastic ball grid array (pbga) packages
2 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit 1 2 3 4 5 6 7 8 9 10 1 1 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 109 1 10 1 1 1 1 12 1 13 1 14 1 15 1 16 1 17 1 18 1 19 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 td7/tdp7 tclk7 los6 cv6/rdn6 rd6/rdp6 rclk6 bpvi6/tdn6 td6/tdp6 tclk6 mclk mode2 a4 mc3/a3 mc2/a2 mc1/a1 mc0/a0 vddio gndio vddd gndd lp0/d0/ad0 lp1/d1/ad1 lp2/d2/ad2 lp3/d3/ad3 lp4/d4/ad4 lp5/d5/ad5 lp6/d6/ad6 lp7/d7/ad7 tclk1 td1/tdp1 bpvi1/tdn1 rclk1 rd1/rdp1 cv1/rdn1 los1 tclk0 bpvi3/tdn3 rclk3 rd3/rdp3 cv3/rdn3 los3 rtip3 rring3 vddt3 ttip3 tring3 gndt3 rring2 rtip2 gndt2 tring2 ttip2 vddt2 rtip1 rring1 vddt1 ttip1 tring1 gndt1 rring0 rtip0 gndt0 tring0 ttip0 vddt0 mode1 los0 cv0/rdn0 rd0/rdp0 rclk0 bpvi0/tdn0 td0/tdp0 td4/tdp4 tclk4 los5 cv5/rdn5 rd5/rdp5 rclk5 bpvi5/tdn5 td5/tdp5 tclk5 tdi tdo tck tms trst ic ic vddio gndio vdda gnda mode0/code cs /jas ts2/sclk/ale/ as ts1/ rd /r/ w ts0/sdi/ wr / ds sdo/rdy/ a ck int tclk2 td2/tdp2 bpvi2/tdn2 rclk2 rd2/rdp2 cv2/rdn2 los2 tclk3 td3/tdp3 figure - 2a. tqfp package pin assignment bpvi4/tdn4 rclk4 rd4/rdp4 cv4/rdn4 los4 oe clke vddt4 ttip4 tring4 gndt4 rtip4 rring4 gndt5 tring5 ttip5 vddt5 rring5 rtip5 vddt6 ttip6 tring6 gndt6 rtip6 rring6 gndt7 tring7 ttip7 vddt7 rring7 rtip7 los7 cv7/rdn7 rd7/rdp7 rclk7 bpvi7/tdn7 description: the IDT82V2048 is a single chip, 8-channel t1/e1 short haul pcm transceiver with a reference clock of 1.544mhz (t1) or 2.048mhz (e1). it contains 8 transmitters and 8 receivers. both the receivers and transmitters can be programmed to work either in single rail mode or dual rail mode. ami or hdb3/b8zs encoder/ decoder is selectable in single rail mode. pre-encoded transmit data in nrz format can be accepted when the device is configured in dual rail mode. the receivers perform clock and data recovery by using integrated digital phase-locked loop. as an option, the raw sliced data (no retiming) can be output on the receive data pins. transmit equalization is implemented with low-impedance output drivers that provide shaped waveforms to the transformer, guaranteeing template conformance. a jitter attenuator is integrated in the IDT82V2048 and can be switched into either the transmit path or the receive path for all chan- pin configura tions nels. the jitter attenuation performance meets etsi ctr12/13, itu g.736, g.742, g.823, and at&t pub 62411 specifications. the IDT82V2048 offers hardware control mode and software control mode. software control mode works with either serial host interface or parallel host interface. the latter works via an intel/motorola compatible 8-bit parallel interface for both multiplexed or non-multiplexed applica- tions. hardware control mode uses multiplexed pins to select differ- ent operation modes when the host interface is not available to the device. the IDT82V2048 also provides loopback and jtag boundary scan testing functions. using the integrated monitoring function, the IDT82V2048 can be configured as a 7-channel transceiver with non- in- trusive protected monitoring points. the IDT82V2048 can be used for sdh/sonet multiplexers, central office or pbx, digital access cross connects, digital radio base stations, remote wireless modules and microwave transmission systems. idt 82v2048da
3 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit pin configura tions (continued) vddt 4 tring 4 gndt 4 rtip 4 rtip 7 gndt 7 tring 7 vddt 7 rdn 7 rclk 4 rdp 4 rdn 4 rdp 7 rclk 7 vddt 5 tring 5 gndt 5 rtip 5 rtip 6 gndt 6 vddt 6 rdn 6 rclk 5 rdp 5 rdn 5 rdp 6 rclk 6 vddt 5 ttip 5 gndt 5 rring 5 rring 6 gndt 6 ttip 6 vddt 6 tdn 6 tclk 5 tdp 5 tdn 5 tdp 6 tclk 6 los 4 los 7 los 6 oe clke los 5 mode 2 mclk tms a4 mc 3 tck tdo tdi mc 2 mc 1 gndio gndio mc 0 vddio ic trst lp 0 vddio gnda gndd lp 1 vdda ic mode 0 lp 2 vddd cs lp 3 lp 4 ts 0 ts 1 ts 2 lp 5 lp 6 los 3 los 0 los 1 sdo int los 2 mode 1 lp 7 vddt 2 ttip 2 gndt 2 rring 2 rring 1 gndt 1 ttip 1 vddt 1 tdn 1 tclk 2 tdp 2 tdn 2 tdp 1 tclk 1 vddt 2 tring 2 gndt 2 rtip 2 rtip 1 gndt 1 tring 1 vddt 1 rdn 1 rclk 2 rdp 2 rdn 2 rdp 1 rclk 1 vddt 3 ttip 3 gndt 3 rring 0 gndt 0 ttip 0 vddt 0 tdn 0 tclk 3 tdp 3 tdn 3 tdp 0 tclk 0 vddt 3 tring 3 gndt 3 rtip 3 rtip 0 gndt 0 tring 0 vddt 0 rdn 0 rclk 3 rdp 3 rdn 3 rdp 0 rclk 0 vddt 7 ttip 7 gndt 7 rring 7 rring 4 gndt 4 ttip 4 vddt 4 tdn 4 tclk 7 tdp 7 tdn 7 tdp 4 tclk 4 tring 6 idt 82v2048bb (bottom view) rring 3 a b c d e f g h j k l m n p a b c d e f g h j k l m n p 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 figure - 2b. pbga160 package pin assignment
4 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit pin no. name type qfp144 bga160 description transmit and receive line interface ttip0 ttip1 ttip2 ttip3 ttip4 ttip5 ttip6 ttip7 tring0 tring1 tring2 tring3 tring4 tring5 tring6 tring7 analog output 45 52 57 64 117 124 129 136 46 51 58 63 118 123 130 135 n5 l5 l10 n10 b10 d10 d5 b5 p5 m5 m10 p10 a10 c10 c5 a5 ttipn/tringn: transmit bipolar tip/ring for channel 0 ~7 these pins are the differential line driver outputs. they will be in high impedance state if pin oe is low or the corresponding pin tc lkn is low (pin oe is globe control, while pin tclkn is per - channel control). in host mode, each pin can be in high impedance state by programming a ?1? to the corresponding bit in register oe 1 . rtip0 rtip1 rtip2 rtip3 rtip4 rtip5 rtip6 rtip7 rring0 rri ng1 rring2 rring3 rring4 rring5 rring6 rring7 analog input 48 55 60 67 120 127 132 139 49 54 61 66 121 126 133 138 p7 m7 m8 p8 a8 c8 c7 a7 n7 l7 l8 n8 b8 d8 d7 b7 rtipn/rringn: receive bipolar tip/ring for channel 0~7 these pins are the differential li ne receiver inputs. 1 register name is indicated by bold capital letter. oe : output enable register. pin description
5 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit pin no. name type qfp144 bga160 description tdn: transmit data for channel 0 ~ 7 when the device is in single rail mode, the nrz data to be transmitted is input on this pin. data on tdn is sampled into the device on falling edges of tclkn, and encoded by ami or hdb3 / b8zs line code rules before being transmitted to the line. bpvin: bipolar violation insertion for channel 0 ~ 7 bipolar violation insertion is available in single rail mo de 2 (see table - 1 ) with ami enabled. a low - to - high transition on this pin will make the next logic one to be transmitted on tdn the same polarity as the previous pulse, and violate the ami rule. this is for testing. tdpn/tdnn: positive/negative transmit data for channel 0 ~ 7 when the device is in dual rail mode, the nrz data to be transmitted for positive/negative pulse is input on this pin . data on tdpn/tdnn are active high and sampled on falling edge of tclkn. the line code in dual ra il mode is as the follow s : tdpn tdnn output pulse 0 0 space 0 1 negative pulse 1 0 positive pulse 1 1 space td0/tdp0 td1/tdp1 td2/tdp2 td3/tdp3 td4/tdp4 td5/tdp5 td6/tdp6 td7/tdp7 bpvi0/ tdn0 bpvi1/ tdn1 bpvi2/ tdn2 bpvi3/ tdn3 bpvi4/ tdn4 bpvi5/ tdn5 bpvi6/ tdn6 bpvi7/ tdn7 i 37 30 80 73 108 101 8 1 38 31 79 72 109 102 7 144 n2 l2 l13 n13 b13 d13 d2 b2 n3 l3 l12 n12 b12 d12 d3 b3 pulling pin tdnn high for more than 16 consecutive tclk clock cycles will configure the corresponding channel into single rail mode 1 (see table - 1 on page14 ). tclkn: transmit clock for channel 0 ~ 7 the clock of 1.544 mhz (for t1 mode) or 2.048 mhz (for e1 mode) for transmit is input on this pin. the transmit data at tdn/tdpn or tdnn is sampled into the device on falling edge of tclkn. pulling tc lkn high for more than 16 mclk cycles, the corresponding transmitter is set in transmit all one (tao) state (when mclk is clocked). in tao state, the tao generator adopts mclk as the time reference. if tclkn is low, the corresponding transmit channel is se t into power down state, while driver output ports become high impedance. different combinations of tclkn and mclk result in different transmit mode. it is summarized as the follows: mclk tclkn transmitter mode clocked clocked normal operation clocked high ( 3 16 mclk) transmit all one (tao) signals to the line side in the corresponding transmit channel. clocked low ( 3 64 mclk) corresponding transmit channel is set into power down state. tclkn is clocked no rmal operation tclkn is high ( 3 16 tclk1) transmit all one (tao) signals to the line side in the corresponding transmit channel. tclkn is low ( 3 64 tclk1) corresponding transmit channel is set into power down state. high/low tclk1 is clocked the receive path i s not affected by the status of tclk1. when mclk is high, all receive paths just slice the incoming data stream. when mclk is low, all the receive paths are powered down. tclk0 tclk1 tclk2 tclk3 tclk4 tclk5 tclk6 tclk7 i 36 29 81 74 107 100 9 2 n1 l1 l14 n14 b14 d14 d1 b1 high/low tclk1 is not available (high/low) all eight transmitters (ttipn & tring n) will be in high impedance state. pin description (continued)
6 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit pin no. name type qfp144 bga160 description rd0/rdp0 rd1/rdp1 rd2/rdp2 rd3/rdp3 rd4/rdp4 rd5/rdp5 rd6/rdp6 rd7/rdp7 cv0/rdn0 cv1/rdn1 cv2/rdn2 cv3/rdn3 cv4/rdn4 cv5/rdn5 cv6/rdn6 cv7/rdn7 o tri - state 40 33 77 70 111 104 5 142 41 34 7 6 69 112 105 4 141 p2 m2 m13 p13 a13 c13 c2 a2 p3 m3 m12 p12 a12 c12 c3 a3 rdn: receive data for channel 0 ~ 7 in s ingle r ail m ode, the received nrz data is output on this pin. the data is decoded by ami or hdb3/b8zs line code rule. cvn: code violation for channel 0 ~ 7 in s ingle r ail m ode, the bipolar violation, code violation and excessive zeros will be reported by driving pin cvn to high level for a full clock cycle . however, only bipolar violation is indicated when ami decoder is selected. rdpn/rdnn: pos itive/ negative receive data for channel 0 ~ 7 in d ual r ail m ode with clock recovery, these pins output the nrz data. a high signal on rdpn indicates the receipt of a positive pulse on rtipn/rringn while a high signal on rdnn indicates the receipt of a negati ve pulse on rtipn/rringn. the output data at rdn or rdpn/rdnn are valid on the falling edges of rclk when the clke input is in high level, or valid on the rising edges of rclk when clke is low. in d ual r ail m ode without clock recovery, these pins output t he raw rz sliced data. in this data recovery mode, the active polarity of rdpn/rdnn is determined by pin clke. when pin clke is low, rdpn/rdnn is active low. when pin clke is high, rdpn/rdnn is active high. in hardware mode, rdn or rdpn/rdnn will remain ac tive during los. in host mode, these pins will either remain active or insert alarm indication signal (ais) into the receive path, determined by bit aise in register gcf (global configuration register). rdn or rdpn/rdnn is set into high impedance when the corresponding receiver is power down. rclk0 rclk1 rclk2 rclk3 rclk4 rclk5 rclk6 rclk7 o tri - state 39 32 78 71 110 103 6 143 p1 m1 m14 p14 a14 c14 c1 a1 rclkn: receive clock for channel 0 ~ 7 in clock recovery mode, this pin outputs the recovered clock fro m signal received on rtipn/rringn. the received data are clocked out of the device on rising edges of rclkn if pin clke is low, or on falling edges of rclkn if pin clke is high. in data recovery mode, rclkn is the output of an internal exclusive or (xor) which is connected with rdpn and rdnn. the clock is recovered from the signal on rclkn externally. if receiver n is power down, the corresponding rclkn is in high impedance. mclk i 10 e1 mclk: master clock this is the independent, free running reference c lock. a clock of 1.544 mhz (for t1 mode) or 2.048 mhz (for e1 mode) is supplied to this pin as the clock reference of the device for normal operation. in receive path, when mclk is high, the device slices the incoming bipolar line signal into rz pulse (dat a recovery mode). when mclk is low, all the receivers are power down , and the output pins rclkn, rdpn and rdnn are switched to high impedance. in transmit path, the operation mode is de cided by the combination of mclk and tclkn (see tclkn pin descr iption f or detail). note that wait state generation via rdy/ ack is not available if mclk is not provided. los0 los1 los2 los3 los4 los5 los6 los7 o 42 35 75 68 113 106 3 140 k4 k3 k12 k11 e11 e12 e3 e4 losn: loss of signal output for channel 0 ~ 7 a high level on t his pin indicates the loss of signal when there is no transition over a specified period of time and no enough ones density in the received signal. the transition will return to low automatically when there is enough transitions over a specified period of time with a certain ones density in the received signal. the los assertion and desertion criteria are described in the functional description . pin description (continued)
7 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit pin no. name type qfp144 bga160 description hardware/host control mode mode2: control mode select 2 the signal on this pin determines which control mode is selected to control the device: mode2 control inte rface low control by hardware mode vddio/2 control by serial host interface high control by parallel host interface hardware control pins include mode[2:0], ts[2:0], loop[7:0], code, clke, jas and oe. serial host interface pins include cs , sclk, sdi, sdo and int . parallel host interface pins include cs , a[4:0], d[7:0], wr / ds , rd /r/ w , ale/ as , int and rdy/ ack . the device supports multiple parallel host interface as follows ( refer to mode1 and mode0 pin descriptions below for deta ils ): mode[2:0] host interface 100 non - multiplexed motorola mode interface. 101 non - multiplexed intel mode interface. 110 multiplexed motorola mode interface. mode2 i (pulled to vddio / 2) 11 e2 111 multiplexed intel mode interface. mode1 i 43 k2 mode1: co ntrol mode select 1 in parallel host mode, the parallel interface operates with separate address bus and data bus when this pin is low, and operates with multiplexed address and data bus when this pin is high. in serial host mode or hardware mode, this pin should be grounded. mode0 /code i 88 h12 mode0: control mode select 0 in host mode, the parallel host interface is configured for motorola compatible hosts when this pin is low, or for intel compatible hosts when this pin is high. code: line code rule s elect in hardware control mode, the b8zs (for t1 mode)/ hdb3 (for e1 mode) encoder/decoder is enabled when this pin is low, and ami encoder/decoder is enabled when this pin is high. the selections affect all the channels. in serial host mode, this pin sho uld be grounded. cs : chip select (active low) in host mode, this pin is asserted low by the host to enable host interface. a transition from high to low must occur on this pin for each read/write operation and the le vel must not return to high until the operation is over. jas: jitter attenuator select in hardware control mode, this pin globally determines the jitter attenuator position: jas jitter attenuator (ja) configuration low ja in transmit path vddio/2 ja not used cs /jas i (pulled to vddio / 2) 87 j11 high ja in receive path pin description (continued)
8 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit pin no. name type qfp144 bga160 description ts2/ sclk/ ale/ as i 86 j12 ts2: template select 2 in hardware control mode, the signal on this pin is the most significant bit for the transmit template select. refer to transmit template of the function al description for details. sclk: shift clock in serial host mode, the signal on this pin is the shift clock for the serial interface. data on pin sdo is clocked out on falling edges of sclk if pin clke is low, or on rising edges of sclk if pin clke is hi gh. data on pin sdi is always sampled on rising edges of sclk. ale: address latch enable in parallel intel multiplexed host mode, the address on ad[4:0] is sampled into the device on falling edges of ale (signals on ad[7:5] are ignored). in non - multiplexe d host mode, ale should be pulled high. as : address strobe (active low) in parallel motorola multiplexed host mode, the address on ad[4:0] is latched into the device on falling edges of as (signals on ad[7:5] are ignored). in non - multiplexed host mode, as should be pulled high. ts1/ rd /r/ w i 85 j13 ts1: template select 1 in hardware control mode, the signal on this pin is the second most significant bit for the transmit template select. refer to transmit template of functional description for details. r d : read strobe (active low) in parallel intel multiplexed or non - multiplexed host mode, this pin is active low for read operation. r/ w : read/write select in parallel motorola multiplexed or non - multiplexed host mode, the pin is active low for write operat ion and high for read operation. ts0/ sdi/ wr / ds i 84 j14 ts0: template select 0 in hardware control mode, the signal on this pin is the least significant bit for the transmit template select. refer to transmit template of functional description for detail s. sdi: serial data input in serial host mode, this pin input the data to the serial interface. data on this pin is sampled on rising edges of sclk. wr : write strobe (active low) in parallel intel host mode, this pin is active low during write operation. the data on d[7:0] (in non - multiplexed mode) or ad[7:0] (in multiplexed mode) is sampled into the device on rising edges of wr . ds : data strobe (active low) in parallel motorola host mode, this pin is active low. during a write operation (r/ w = 0), the data on d[7:0] (in non - multiplexed mode) or ad[7:0] (in multiplexed mode) is sampled into the device on rising edges of ds. during a read operation (r/ w = 1), the data is driven to d[7:0] (in non - multiplexed mode) or ad[7:0] (in multiplexed mode) by the d evice on rising edges of ds . in parallel motorola non - multiplexed host mode, the address information on the 5 bits of address bus a[4:0] are latched into the device on the falling edge of ds . pin description (continued)
9 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit pin no. name type qfp144 bga160 description sdo /rdy / ack o 83 k14 sdo: serial data output in serial host mode, the data is output on this pin. in serial write operation, sdo is always in high impedance. in serial read operation, sdo is in high impeda nce only when sdi is in address/command byte. data on pin sdo is clocked out of the device on falling edges of sclk if pin clke is low, or on rising edges of sclk if pin clke is high. rdy: ready output in parallel intel host mode, the high level of this p in reports to the host that bus cycle can be completed, while low reports the host must insert wait states. ack : acknowledge output (active low) in parallel motorola host mode, the low level of this pin indicates that valid information on the data bus is ready for a read operation or acknowledges the acceptance of the written data during a write operation. int o open drain 82 k13 int : interrupt (active low) this is the open drain, active low interrupt output. four sources may cause the interrupt (refer to interrupt handling of functional description for details). lpn: loopback select 7 ~ 0 in hardware cont rol mode, pin lpn configures the corresponding channel in different loopback mode, as follows: lpn loopback configuration low remote loopback. vddio/2 no loopback. high analog loopback. lp7/d7/ad7 lp6/d6/ad6 lp5/d5/ad5 lp4/d4/ad4 lp3/d3/ad3 lp2/d2/ad2 lp1/d1/ad1 lp0/d0/ad0 i/o tri - state 28 27 26 25 24 23 22 21 k1 j1 j2 j3 j4 h2 h3 g2 refer to loopback configuration of fu nctional description for details. dn: data bus 7 ~ 0 in non - multiplexed host mode, these pins are the bi - directional data bus. adn: address/data bus 7 ~ 0 in multiplexed host mode, these pins are the multiplexed bi - directional address/data bus. in serial ho st mode, these pins should be grounded. pin description (continued)
10 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit pin no. name type qfp144 bga160 description mcn: performance monitor configuration 4 ~ 0 in hardware control mode, a4 must be connected to gnd. mc[3:0] are used to select one transmitter or receiver of the channel 1 to 7 for non - intrusive monitoring. channel 0 is used as the monitoring channel. if a transmitter is monitored, signals on the corresponding pins ttipn and tringn are internally transmitted to rtip0 and rring0. if a receiver is mon itored, signals on the corresponding pins rtipn and rringn are internally transmitted to rtip0 and rring0. the clock and data recovery circuit in receiver 0 can then output the monitored clock to pin rclk0 as well as the monitored data to rdp0 and rdn0 pin s. the signals monitored by channel 0 can be routed to ttip0/tring0 by activating the remote loopback in this channel. performance monitor configuration determined by mc[3:0] is shown below. note that if mc[2:0] = 000, the device is in normal operation of all the channels. mc[3:0] monitoring configuration 0000 normal operation without monitoring. 0001 monitoring receiver 1. 0010 monitoring receiver 2. 0011 monitoring receiver 3. 0100 monitoring receiver 4. 01 01 monitoring receiver 5. 0110 monitoring receiver 6. 0111 monitoring receiver 7. 1000 normal operation without monitoring. 1001 monitoring transmitter 1. 1010 monitoring transmitter 2. 1011 monitoring transmitter 3. 1100 monitoring transmitter 4. 1101 monitoring transmitter 5. 1110 monitoring transmitter 6. 1111 monitoring transmitter 7. a4 mc3/a3 mc2/a2 mc1/a1 mc0/a0 i 12 13 14 15 16 f4 f3 f2 f1 g3 an: address bus 4 ~ 0 when pin mode1 is low, the parallel host interface operates with separate address and data bus. in this mode, the signal on this pin is the address bus of the host interface. oe i 114 e14 oe: output driver enable pulling this pin to low can make all driver output into high impedance state immediately for redundancy application without external mechanical relays. in this condition, all the other internal circuits remain active. clke i 115 e13 clke: clock edge select the signal on this pin determines the active edge of rclkn and sclk in clock recovery mode, or determines the acti ve level of rdpn and rdnn in the data recovery mode. (refer to functional description and table - 2 ). pin description (continued)
11 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit pin no. name type qfp144 bga160 description jtag signals trst i pullup 95 g12 trst : jtag test port reset (active low) this is the active low asynchronous reset to the jtag test port. this pin has an internal pullup resistor and it can be left disco nnected. tms i pullup 96 f11 tms: jtag test mode select the signal on this pin controls the jtag test performance and is clocked into the device on rising edges of tck. this pin has an internal pullup resistor and it can be left disconnected. tck i 97 f14 tck: jtag test clock this pin input the clock of the jtag test. the data on tdi and tms are clocked into the device on rising edges of tck, while the data on tdo is clocked out of the device on falling edges of tck. tdo o tri - state 98 f13 tdo: jtag test data output this pin output the serial data of the jtag test. the data on tdo is clocked out of the device on falling edges of tck. tdo is a tri - state output signal. it is active only when scanning of data is out. tdi i pull up 99 f12 tdi: jtag t est data input this pin input the serial data of the jtag test. the data on tdi is clocked into the device on rising edges of tck. this pin has an internal pullup resistor and it can be left disconnected. ic - 93 g13 ic: internal connected (leave it open for normal operation.) ic - 94 h13 ic: internal connected (leave it open for normal operation.) supplies and grounds vddio - 17 92 g1 g14 3.3v i/o power supply gndio - 18 91 g4 g11 i/o gnd vddt0 vddt1 vddt2 vddt3 vddt4 vddt5 vddt6 vddt7 - 44 53 56 65 116 125 128 137 n4,p4 l4,m4 l11,m11 n11,p11 a11,b11 c11,d11 c4,d4 a4,b4 3.3v / 5v power supply for transmitter driver all vddt pins must be connected to either 3.3v or 5v. it is not allowed to leave any of the vddt pins open (not - connected) even if the cha nnel is not used. for t1 applications, 5 v vddt is recommended. gndt0 gndt1 gndt2 gndt3 gndt4 gndt5 gndt6 gndt7 - 47 50 59 62 119 122 131 134 n6,p6 l6,m6 l9,m9 n9,p9 a9,b9 c9,d9 c6,d6 a6,b6 analog gnd for transmitter driver vddd vdda - 19 90 h1 h14 3.3v digital / analog core power supply gndd gnda - 20 89 h4 h11 digital / analog core gnd pin description (continued)
12 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit function al description over view the IDT82V2048 is a fully integrated octal short-haul line interface unit, which contains eight transmit and receive channels for use in either e1 or t1 applications. the receiver performs clock and data recovery. as an option, the raw sliced data (no retiming) can be output to the sys- tem. transmit equalization is implemented with low-impedance output drivers that provide shaped waveforms to the transformer, guaranteeing template conformance. a selectable jitter attenuation may be placed in the receive path or the transmit path. moreover, multiple testing func- tions, such as error detection, loopback and jtag boundary scan are also provided. the device is optimized for flexible software control through a serial or parallel host mode interface. hardware control is also available. figure-1 shows one of the eight identical channels operation. t1 / e1 mode selection t1/e1 mode selection configures the device globally. in hardware mode, the template selection pins: ts2, ts1 and ts0 determine whether the operation mode is t1 or e1 (refer to table-7). in software mode, the transmit template select register (primary register: 11hex) determines whether the operation mode is t1 or e1. system interf ace the system interface of each channel can be configured to operate in different modes: 1. single rail interface with clock recovery . 2. dual rail interface with clock recovery . 3. dual rail interface with data recovery (that is, with raw data slicing only and without clock recovery) . note: 1. the footprint ?n? (n = 0 - 7) indicates one of the eight channels 2. the first letter ?e-?indicates expanded register. 3. the grey blocks are bypassed and the dotted blocks are selectable figure - 3. dual rail interface with clock recovery 3 jitter attenuator jitter attenuator b8zs/ hdb3/ami decoder b8zs/ hdb3/ami encoder slicer peak detector clk&data recovery (dpll) line driver waveform shaper los detector one of eight identical channels rtipn rringn ttipn tringn losn rclkn rdpn rdnn tclkn tdnn tdpn transmit all ones therefore, each signal pin on system side has multiple functions depending on which operation mode the device is in. the dual rail interface consists of tdpn 1 , tdnn, tclkn, rdpn, rdnn and rclkn. data transmitted from tdpn and tdnn appears on ttipn and tringn at the line interface; data received from the rtipn and rringn at the line interface are transferred to rdpn and rdnn while the recovered clock extracting from the received data stream outputs on rclkn. in dual rail operation, the clock/data recovery mode is selectable. dual rail interface with clock recovery shown in figure-3 is a default configuration mode. dual rail interface with data recovery is shown in figure-4 . pin rdpn and rdnn, in this condition, are raw rz slice output and internally connected to an exor which is fed to the rclkn output for external clock recovery applications. in single rail mode, data transmitted from tdn appears on ttipn and tringn at the line interface. data received from the rtipn and rringn at the line interface appears on rdn while the recovered clock extracting from the received data stream outputs on rclkn. when the device is in single rail interface, the selectable ami or hdb3/b8zs line encoder/decoder is available and any code violation in the received data will be indicated at the cvn pin. the single rail mode can be devided into 2 sub-modes. single rail mode 1, whose interface is composed of tdn, tclkn, rdn, cvn and rclkn, is realized by pulling pin tdnn to high for more than 16 consecutive tclk cycles. single rail mode 2, whose interface is composed of tdn, tclkn, rdn, cvn, rclkn and bpvin, is realized by setting bit crs in e-crs 2 and bit sing in e-sing . the difference between them is that, in the latter mode bipolar violation can be inserted via pin bpvin if ami line code is selected. the configuration of different system interface is summarized in table-1 .
13 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit figure - 6. single rail mode figure - 4. dual rail interface with data recovery jitter attenuator b8zs/ hdb3/ami decoder b8zs/ hdb3/ami encoder slicer peak detector clk&data recovery (dpll) line driver waveform shaper los detector one of eight identical channels rtipn rringn ttipn tringn losn rclkn (rdp rdn) rdpn rdnn tclkn tdnn tdpn transmit all ones jitter attenuator jitter attenuator jitter attenuator hdb3/ b8zs/ami decoder hdb3/ b8zs/ami encoder slicer peak detector clk&data recovery (dpll) line driver waveform shaper los detector one of eight identical channels rtipn rringn ttipn tringn losn rclkn rdn cvn tclkn tdnn/bpvin tdn transmit all ones
14 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit table - 1 a . system interf ace configura tion ( hardware mode) clock edges the active edge of rclk and sclk(serial interface clock) are also selectable. if pin clke is low, the active edge of rclk is the rising edge, as for sclk, that is falling edge. on the contrary, if clke is high, the active edge of rclk is the falling edge and that of sclk is rising edge. pins rdn/rdpn, cvn/rdnn and sdo are always active high, and those output signals are valid on the active edge of rclk and sclk respectively. see table-2 for details . however, in dual rail mode without clock recovery, pin clke is used to set the active level for rdpn/rdnn raw slicing output: high for active high polarity and low for active low. it should be noted that data on pin sdi are always active high and is sampled on the rising edge of sclk. the data on pin td/tdp or bpvi/ tdn are also always active high but is sampled on the falling edge of tclk, despite the level on clke. rd/rdp and cv/rdn pin clke clock recovery slicer output sdo l ow rclk active h igh active l ow sclk active h igh h igh rclk active h igh active h igh sclk active h igh table - 2. active clock edge and active level receiver in receive path, the line signals couple into rringn and rtipn via a transformer and are converted into rz digital pulses by a data slicer. adaptation for attenuation is achieved using an integral peak detector that sets the slicing levels. clock and data are recovered from the received rz digital pulses by a digital phase-locked loop that provides excellent jitter accommodation. after passing through the selectable jitter attenuator, the recovered data are decoded using b8zs/hdb3 or ami line code rules and clocked out of pin rdn in single rail mode, or presented on rdpn/rdnn in an undecoded dual rail nrz format. loss of signal, alarm indication signal, line code violations and excessive zero are detected. the presence of programmable inband loopback codes are also detected. these various changes in status may be enabled to generate interrupts. peak detector and slicer the slicer determines the presence and polarity of the received pulses. in data recovery mode, the raw positive slicer output appears on hardware mode mclk tdnn interface clocked h ( 16 mclk) single rail mode 1 clocked pulse dual rail with clock recovery h pulse receive just slice the incoming data. transmit is determined by the status of tclkn. l pulse receive is power down. transmit is determined by the status of tclkn. host mode mclk tdnn crsn in e-crs singn in e-sing interface clocked h 0 0 single rail mode 1 clocked pulse 0 1 single rail mode 2 clocked pulse 0 0 dual rail with clock recovery clocked pulse 1 0 dual rail with data recovery h pulse - - receive just slice the incoming data. transmit is determined by the status of tclkn. l pulse - - receive is power down. transmit is determined by the status of tclkn. table - 1 b . system interf ace configura tion ( host mode)
15 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit table - 3. configura tion of the line code rule rdpn while the negative slicer output appears on rdnn. in clock and data recovery mode, the slicer output is sent to clock and data recov- ery circuit for abstracting retimed data and optional decoding. the slicer circuit has a built-in peak detector from which the slicing threshold is de- rived. the slicing threshold is default to 50% (typical) of the peak value. signals with an attenuation of up to 12 db (from 2.4v) can be recov- ered accurately by the receiver. to provide immunity from impulsive noise, the peak detectors are held above a minimum level of 0.150 v typically, despite the received signal level. clock and data recovery the function of clock and data recovery is accomplished by digital phase locked loop (dpll). the dpll is clocked 16 times of the received clock rate, i.e. 24.704 mhz in t1 mode or 32.768 mhz in e1 mode. the recovered data and clock from dpll is then sent to the selectable jitter attenuator or decoder circuit for further processing. the clock recovery and data recovery mode can be selected on per channel basis by setting the bit crsn in e-crs . when bit crsn is defaulted to ?0?, the corresponding channel operates in data and clock recovery mode. the recovered clock is output on pin rclkn and re- timed nrz data are output on pin rdpn/rdnn in dual rail mode or on rdn in single rail mode. when crsn is ?1?, dual rail with data recovery mode is enabled in the corresponding channel and the clock recovery function is bypassed. in this condition, the analog line signal are converted to rz digital bit streams on the rdpn/rdnn pins and internally connected to an exor which is fed to the rclkn output for external clock recovery applications. moreover, pulling mclk to h level, all the receivers will enter the dual rail with data recovery mode. in this case, e-crs is ignored. b8zs/hdb3/ami line code rule selectable b8zs/hdb3 or ami line coding/decoding is provided when the device is configured in single rail mode. b8zs rules for t1 or hdb3 rules for e1 is enabled by setting bit code in register gcf (glo- bal control configuration) to ?0? or pulling pin code to low. ami rule is enabled by setting bit code in gcf to ?1? or pulling pin code to high. all the setting above are effected to eight channels. individual line code rule selection for each channel, if need, is avail- able by setting bit singn in e-sing to ?1? (to activate bit coden in e- code ) and programming bit coden to select line code rules in the cor- responding channel: ?0? for b8zs/hdb3, while ?1? for ami. in this case, the value in bit code in gcf or pin code for global control is unaf- fected in the corresponding channel and only affect in other channels. in dual rail mode, the decoder/encoder are bypassed. bit code in gcf , bit coden in e-code and pin code are ignored. the configuration of the line code rule is summarized in table-3. loss of signal (los) detection the loss of signal detector monitors the amplitude and density of the received signal on receiver line before the transformer (measured on port a, b in figure 12). the loss condition is reported by pulling pin losn to high. in the same time, los alarm registers track los condition. when los detected or cleared, an interrupt will generate if not masked. in host mode, the detection supports the ansi t1.231 for t1 mode and itu-g.775 and etsi 300233 for e1 mode. in hardware mode, it only supports the itu-g.775 and ansi t1.231 specification. table-4 summarizes the conditions of los in clock recovery mode. during los, the rdpn/rdnn output the sliced data when bit aise host mode code in gcf coden in e-code singn in e-singn line code rule 0 0 / 1 0 all channels in hdb3/b8zs 0 0 1 1 0 / 1 0 all channels in ami 1 1 1 0 1 1 chn in ami 1 0 1 chn in hdb3/b8zs hardware mode code line code rule l all channels in hdb3/b8zs h all channels in ami table - 4. los condition in clock recover y mode * standard signal on ansi t1.231 for t1 g.775 for e1 etsi 300233 for e1 pin losn los continuous 175 32 2048 (1 ms) h detected intervals amplitude below typical 310 mv below typical 310 mv below typical 310 mv los density 12.5% (16 marks in a sliding 12.5% (4 marks in a sliding 12.5% (4 marks in a sliding l cleared 128-bit period) with no more 32-bit period) with no more 32-bit period) with no more than 99 continuous zeros than 15 continuous zeros than 15 continuous zeros amplitude exceed typical 410 mv exceed typical 410 mv exceed typical 410 mv note: * for more detail regarding the los parameters, please refer to receiver characteristics on page 48.
16 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit table - 6. error detection figure - 7. ami bipolar violation bipolar violation detected bipolar violation clk rtip rring rd cv 1 2 3 4 5 v 6 7 1 2 3 4 5 6 v hardware mode host mode line code pin cvn reports line code codvn in e-codv czern in e-czer pin cvn reports ami bipolar violation ami - - bipolar violation hdb3 bipolar violation hdb3 0 0 bipolar violation + code violation /b8zs + code violation /b8zs 0 1 bipolar violation + code violation + excessive zero + excessive zero 1 0 bipolar violation 1 1 bipolar violation + excessive zero table - 5. ais condition itu g.775 for e1 etsi 300233 for e1 ansi t1.231 for t1 (register lac defaulted to 0) (register lac is 1) ais less than 3 zeros contained in each of two less than 3 zeros contained in less than 9 zeros contained in a 8192-bit stream detected consecutive 512-bit stream are received a 512-bit stream are received (a ones density of 99.9% over a period of 5.3ms) are received ais 3 or more zeros contained in each of two 3 or more zeros contained in a 9 or more zeros contained in a 8192-bit stream cleared consecutive 512-bit stream are received 512-bit stream are received are received in register gcf is 0 or output all ones as ais (alarm indication signal) when bit aise is set to 1; the rclkn is replaced by mclk only if the aise is set. alarm indication signal detection (ais) alarm indication signal is available only in host mode with clock recovery, as table-5 shows. error detection the device can detects excessive zero, bipolar violations and b8zs/ hdb3 code violations, refer to figure-7, 8, 9 . all the three kinds of errors are reported in both host mode and hardware mode with hdb3/b8zs line code rule is used. moreover, in host mode, the expanded registers e-czer and e-codv are used to determine whether the excessive zero and code violation are reported respectively. when configured in ami de- coding mode, only bipolar violation can be reported. the error detection is available only in single rail mode where the pin rdnn/cvn is used as error report output (cvn pin). the configuration and report status of error detection are summa- rized in table-6 .
17 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit figure - 8. hdb3 code violation & excessive zero code violation detected excessive zero detected clk rtip rring rd cv code violation 4 consecutive zeros 1 2 3 4 v v 5 6 1 2 3 4 5 6 figure - 9. b8zs excessive zero excessive zero detected clk rtip rring rd cv 8 consecutive zeros 1 2 3 1 4 5 6 7 8 2 3 5 4 6 7 8 9 transmitter in transmit path, data in nrz (non return to zero) format are clocked into the device on tdn and encoded by ami or hdb3/b8zs line code rules when single rail mode is configured or pre-encoded data in nrz format are input on tdpn and tdnn when dual rail mode is configured. the data are sampled into the device on falling edges of tclkn. jitter attenuator, if enabled, is provided with a fifo which the data to be transmitted are passing through. a low jitter clock is generated by an integral digital phase-locked loop and is used to read data from the fifo. the shape of the pulses are user programmable to ensure that the t1/e1 pulse template is met after the signal is passed through different cable lengths or types. bipolar violation, for diagnosing, can be inserted on pin bpvin if ami line code rule is enabled. waveform shaper t1 pulse template, specified in the dsx-1 cross-connect by ansi t1.102, is illustrated in figure-10 . the device has built-in transmit waveform templates, corresponding to 5 levels of pre-equalization for cable of a length from 0 to 655ft with each increment of 133ft. e1 pulse template, specified in itu-t g.703, is shown in figure-11 . the device has built-in transmit waveform templates for cable of 75 w or 120 w . any one of the six built-in waveform can be chosen in both hardware mode and host mode. setting the pins ts[2:0] as table-7 in hardware mode can select the required waveform template for all the transmitters. in host mode, the waveform template can be configured on per- channel basis. bit tsia[2:0] in register tsia is used to select the channel and bit ts[2:0] in register ts is to select the required waveform template. refer to register description for details.
18 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit figure - 10. dsx-1 waveform template -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 1.2 0 250 500 750 1000 1250 time (ns) normalized amplitude ts2 ts 1 ts 0 service clock rate cable length maximum cable loss (db) 1 - 0 0 0 e1 2.048 mhz 120 w / 75 w cable - 0 0 1 0 1 0 reserved 0 1 1 0 - 13 3 ft. abam 0.6 1 0 0 13 3 - 26 6 ft. abam 1.2 1 0 1 26 6 - 39 9 ft. abam 1.8 1 1 0 39 9 - 5 33 ft. abam 2.4 1 1 1 t1 1.544 mhz 5 33 - 655ft. abam 3.0 table - 7. buil t -in wa veform templa te selection note: 1. maximum cable loss at 772 khz the built-in waveform shaper use an internal high frequency clock which is 16xmclk as clock reference. this function will be bypassed when mclk is unavailable. bipolar violation insertion when configured in single rail mode 2 with ami line code enabled, pin tdnn/bpvin is used as bpvi input. a low-to-high transition on this pin inserts a bipolar violation on the next available mark in the transmit data stream. sampling occurs on the falling edge of tclk. but in taos with analog loopback mode, remote loopback mode and inband loopback mode, the bpvi is disabled. in taos with digital loopback mode, the bpvi is looped back to system side, so the data to be trans- mitted on ttingn and tringn are all ones with no bipolar violation. jitter attenua t or the jitter attenuator is provided for narrow-band width jitter transfer and can be selected to work either in transmit path or in receive path or not used. the selection is accomplished by setting pin jas in hardware mode or configuring bits jacf1 and jacf0 in register gcf in host mode which are both effected to all eight channels. for applications which require line synchronization, the line clock is need to be extracted for the internal synchronization, the jitter attenuator is set in the receive path. another use of the jitter attenuator is to pro- vide clock smoothing in the transmit path for applications such as syn- chronous/asynchronous demultiplexing applications. in these applica- tions, tclk will have an instantaneous frequency that is higher than the nominal t1/e1 data rate and in order to set the average long-term tclk frequency within the transmit line rate specifications, periods of tclk are suppressed (gapped). the jitter attenuator integrates a fifo which can accommodate a gapped tclk. in host mode, the fifo length can be 32 x 2 or 64 x 2 bits by programming bit jadp in gcf. in hardware mode, it is fixed to 64 x 2 bits. the fifo length determines the maximum permissible gap width (see table-8 ), exceeding these values will cause fifo overflow or underflow. the data is 16 or 32 bits? delay through the jitter attenuator in the corresponding transmit or receive path. the constant delay feature is crucial for the applications requiring ?hitless? switching. in host mode, bit jabw in gcf determines the jitter attenuator 3db corner frequency (fc) for both t1 and e1. in hardware mode, the fc is fixed to 2.5hz for t1 or 1.7hz for e1. generally, the lower the fc is, the higher the attenuation. however, lower fc comes at the expense of increased acquisition time. therefore, the optimum fc is to optimize both the attenuation and the acquisition time. in addition, the longer fifo length results in an increased throughput delay and also influences the 3db corner frequency. generally, it?s recommended to use the lower -300 -200 -100 0 100 200 300 time (ns) -0.20 0.00 0.20 0.40 0.60 0.80 1.00 1.20 normalized amplitude figure - 11. cept waveform template
19 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit corner frequency and the shortest fifo length that can still meet jitter attenuation requirements. t1 e1 at&t pub 62411 itu-t g.736 gr-253-code itu-t g.742 itu-t g.783 tr-tsy-000009 etsi ctr 12/13 table - 9. output jitter specifica tion fifo length max. gap width 64 bit 56 ui 32 bit 28 ui table - 8. gap width limit a tion line interf ace circuitr y the transmit and receive interface rtip/rring and ttip/tring connections provide a matched interface to the cable. figure-12 shows the appropriate external components to connect with the cable for one transmit/receive channel. table-11 summarizes the component values based on the specific application. transmit driver power suppl y all transmit driver power supplies must be 5.0v or 3.3v. in e1 mode, despite of the power supply voltage, the 75 w /120 w lines are driven through 9.5 w series resistors and a 1:2 transformer. in t1 mode, when 5.0v is selected, 100 w lines are driven through 9.1 w series resistors and a 1:2 transformer. when 3.3v, 100 w lines are driven through a 1:2 transformer. to optimize the power consumption of the device, series resistors are removed in this case. however, in harsh cable environment, series resistors are required to improve the transmit return loss performance and protect the device from surges coupling into the device. figure - 12. external transmit/receive line circuitry 0.22 m f r x line 1k w r r r r t x line r t r t rtipn rringn tringn ttipn 0.1 m f gndtn vdddn vddt IDT82V2048 one of eight identical channels vddt vddt d4 d3 d2 d1 2 : 1 1 2 : 1 1 1k w cp 68 m f 3 2 a b note: 1. pulse t1124 transformer is recommended to use in standard (std) operating temperature range (0 to 70c), while pulse t1114 transformer is recommended to use in extended (ext) operating temperature range is -40 to +85c. see transformer specifications table for details. 2. typical value. adjust for actual board parasitics to obtain optimum return loss. 3. common decoupling capacitor for all vddt and gndt pins. table - 1 1. external components values table - 10. transformer specifica tions electrical specification @ 25 c part no. turns ratio (pri: sec2%) ocl @ 25c (mh min) l l ( h max) c w/w (pf max) package/ std temp. ext temp. transmit receive transmit receive transmit receive transmit receive schematic t1124 t1114 1:2ct 1ct:2 1.2 1.2 .6 .6 35 35 tou/3 component e1 t1 * 75 w coax 120 w twisted pair 100 w twisted pair vddt = 5.0v 100 w twisted pair vddt = 3.3v r t 9.5 w 1% 9.5 w 1% 9.1 w 1% 0 w r r 9.31 w 1% 15 w 1% 12.4 w 1% 12.4 w 1% cp 2200pf 1000pf d1 - d4 nihon inter electronics - ep05q03l, 11eqs03l, ec10qs04, ec10qs03l; motorola - mbr0540t1 note: * for t1 applications, 5 v vddt is recommended.
20 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit power driver failure monit or an internal power driver failure monitor (dfm), parallelly connected with ttipn and tringn, can detect short circuit failure in the secondary side of transformer. this feature is available only in host mode with no transmit series resistors. refer to table-11 ?external components val- ues? for details. bit scpb in register gcf decides whether the output driver short- circuit protection is enabled. (refer to programming information ) . when it is enabled, the max driver?s output current is limited to 150ma. line protection in transmit side, the schottky diodes d1~d4 are required to protect the line driver and improve the design robustness. in receive side, the series resistors of 1k w are used to protect the receiver against current surges coupled in the device. it does not affect the receiver sensitivity, since the receiver impedance is as high as 120k w typically. hitless protection switching (hps) the IDT82V2048 tranceivers include an output driver tristatability feature for t1/e1 redundancy applications. this feature greatly reduces the cost of implementing redundancy protection by eliminating external relays. details of hps will be described in relative application note. reset writing register rs can cause software reset by initiating about 1 m s reset cycle. this operation set all the registers to their default value. power up during power up, an internal reset signal sets all the registers to de- fault values. this procedure takes at least 2 machine cycles. power down each transmitter channel will be power down by pulling pin tclkn to low for more than 64 mclk cycles (if mclk is available) or about 30us (when mclk is not availabe). each transmitter channel will also be power down by setting bit tpdnn in e-tpdn to 1. all the receivers will power down when mclk is low. when mclk is clocked or high, setting bit rpdnn in e-rpdn to ?1? will configure the corresponding receiver to power down. interf ace with 5v logic the IDT82V2048 can interface directly with 5v ttl family devices. the internal input pads are tolerant to 5v output from ttl and cmos family devices. loopback mode the device provides five different diagnostic loopback configurations: digital loopback, analog loopback, remote loopback, dual loopback and inband loopback. in host mode, these functions are implemented by programming the registers dlb , alb , rlb or inband loopback reg- ister group. in hardware mode, only analog loopback and remote loopback can be selected by pulling pin lpn to high and low respec- tively. digital loopback by programming the bits of register dlb , each channel of the device can be set in local digital loopback. in this configuration, the data and clock to be transmitted, after passing the encoder, is looped back to jitter attenuator (if enabled) and decoder in the receive path, then output on rclkn, rdn/rdpn and cvn/rdnn. the data to be transmitted are still output on ttipn and tringn while the data received on rtipn and rringn are ignored. the loss detector is still in use. figure-13 shows the process. analog loopback by programming the bits of alb register or pulling pin lpn to high, each channel of the device can be set in analog loopback. in this configuration, the data to be transmitted output from the line driver are internally looped back to the slicer and peak detector in the receive path and output on rclkn, rdn/rdpn and cvn/rdnn. the data to be transmitted are still output on ttipn and tringn while the data received on rtipn and rringn are ignored. the loss detector is still in use. figure-14 shows the process. the ttipn and rtipn, tringn and rringn cannot be connected directly to do the external analog loopback test. line impedance loading is required to connduct the external analog loopback test. remote loopback by programming the bits of rlb register or pulling pin lpn to low, each channel of the device can be set in remote loopback. in this configuration, the data and clock recovered by the clock and data recovery circuits are looped to waveform shaper and output on ttipn and tringn. the jitter attenuator is also included in loopback when enabled in the transmit or receive path. the received data and clock are still output on rclkn, rdn/rdpn and cvn/rdnn while the data to be transmitted on tclkn, tdn/tdpn and bpvin/tdnn are ignored. the loss detector is still in use. figure-15 shows the process. dual loopback dual loopback mode is set by setting both bit dlbn in register dlb and bit rlbn in register rlb to ?1?. in this configuration, after passing the encoder, the data and clock to be transmitted are looped back to decoder directly and output on rclkn, rdn/rdpn and cvn/rdnn. the recovered data from rtipn and rringn are looped back to waveform shaper through ja (if selected) and output on ttipn and tringn. the loss detector is still in use. figure-16 shows the process. transmit all ones in hardware mode, the taos mode is set by pulling tclkn high for more than 16 mclk cycles. in host mode, taos mode is set by pro- gramming register tao . in addition, automatic tao signals are inserted by setting register atao when loss of signal occurs. note that the taos generator adopts mclk as a timing reference. in order to assure that the output frequency is within specification limits, mclk must have the applicable stability. this taos mode and digital loopback or analog loopback can be configured simultaneously. figure-17 shows their process.
21 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit jitter attenuator jitter attenuator b8zs/ hdb3/ami decoder b8zs/ hdb3/ami encoder slicer peak detector clk&data recovery (dpll) line driver waveform shaper los detector digital loopback one of eight identical channels rtipn rringn ttipn tringn losn rclkn rdn/rdpn cvn/rdnn tclkn bpvin/tdnn tdn/tdpn transmit all ones figure - 13. digital loopback figure - 14. analog loopback jitter attenuator jitter attenuator b8zs/ hdb3/ami decoder b8zs/ hdb3/ami encoder analog loopback slicer peak detector clk&data recovery (dpll) line driver waveform shaper los detector one of eight identical channels rtipn rringn ttipn tringn losn rclkn rdn/rdpn cvn/rdnn tclkn bpvin/tdnn tdn/tdpn transmit all ones figure - 15. remote loopback jitter attenuator jitter attenuator b8zs/ hdb3/ami decoder b8zs/ hdb3/ami encoder remote/ inband loopback slicer peak detector clk&data recovery (dpll) line driver waveform shaper iblc detector los detector iblc generator one of eight identical channels rtipn rringn ttipn tringn losn rclkn rdn/rdpn cvn/rdnn tclkn bpvin/tdnn tdn/tdpn transmit all ones
22 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit figure - 16. dual loopback jitter attenuator jitter attenuator b8zs/ hdb3/ami decoder b8zs/ hdb3/ami encoder slicer peak detector clk&data recovery (dpll) line driver waveform shaper los detector one of eight identical channels rtipn rringn ttipn tringn losn rclkn rdn/rdpn cvn/rdnn tclkn bpvin/tdnn tdn/tdpn transmit all ones figure - 17b. taos with digital loopback jitter attenuator jitter attenuator b8zs/ hdb3/ami decoder b8zs/ hdb3/ami encoder slicer peak detector clk&data recovery (dpll) line driver waveform shaper los detector one of eight identical channels rtipn rringn ttipn tringn losn rclkn rdn/rdpn cvn/rdnn tclkn bpvin/tdnn tdn/tdpn transmit all ones figure - 17a. taos data path jitter attenuator jitter attenuator b8zs/ hdb3/ami decoder b8zs/ hdb3/ami encoder slicer peak detector clk&data recovery (dpll) line driver waveform shaper los detector one of eight identical channels rtipn rringn ttipn tringn losn rclkn rdn/rdpn cvn/rdnn tclkn bpvin/tdnn tdn/tdpn transmit all ones
23 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit inband loopback inband loopback is a function that facilitates the system remote di- agnosis. when this function is enabled, the chip will detect or generate the inband loopback code. there are two kinds of inband loopback code:active code and deactive code. if the active code is received from the far end in a continuous 5.1 second, the chip can go into re- mote loopback mode (figure-15) automatically. if the deactive code is received from the far end in a continuous 5.1 second, the chip can quit from the remote loopback mode automatically. the chip can also send the active code and deactive code to the far end. two function blocks realize the inband loopback : iblc detector (inband loopback code detector) and iblc generator ( inband loopback code generator). the detection of inband loopback code is enabled by lbde (bit 5, e-lbcf register). if albe (bit 4, e-lbcf register) is set to 1, the chip will go into or quit from the remote loopback mode automatically based on the receipt of inband loopback code. the length of the active code is defined in lbal[1:0] (bit 3-2, e-lbcf register); and the length of the deactive code is defined in the lbdl[1:0] (bit 1-0, e-lbcf register). the pattern of the active code is defined in the e-lbac register, and the pattern of the deactive code is defined in the e-lbdc register. the above settings are globally effective for all the eight channels. the pres- ence of inband loopback code in each channel is reflected timely in the e-lbs register. any transition of each bit in the e-lbs register will be reflected in the e-lbi register, and if enabled in the e-lbm register, will generate an interrupt. the required sequence of programming the inband loopback code detection is : first, set the e-lbac and e- lbdc registers, followed by the e-lbm register. finally, to activate inband loopback detection, set the e-lbcf register. the inband loopback code generator use the same registers as the inband loopback detector to define the length and pattern of ac- tive code and deactive code. the length and pattern of the gener- ated active code and deactive code can be different from the de- tected active code and deactive code. the e-lbgs register deter- mines sending active code or deactive code, and the e-lbge acts as a switch button to start or stop the sending of inband loopback code to the selected channels. before sending inband loopback code, users should be sure that the e-lbcf register, the e-lbac register, the e-lbdc register and the e-lbsg register are configured properly. the required sequence for configuring the inband loopback generator is: first, set the e-lbac and e-lbdc registers, followed by the e-lbcf register. then, to select the inband loopback generator set e-lbgs and then e-lbge . the inband loopback detection and the inband loopback gen- eration can not be used simultaneously. example: 5-bit loop-up/loop-down detection (w/o interrupts): (see note in register description for e-lbac) loop-up code: 11000 loop-down code : 11100 set (in this order) e-lbac (0x09) = 0xc6 (11000110) e-lbdc (0x0a) = 0xe7 (11100111) e-lbcf (0x08) = 0x30 example: 5-bit loop-up/loop-down activation on channel 1 (w/o interrupts): loop-up code: 11000 loop-down code : 11100 set (in this order) e-lbac (0x09) = 0xc6 (11000110) e-lbdc (0x0a) = 0xe7 (11100111) e-lbcf (0x08) = 0x00 e-lbgs (0x0e) = 0x00 e-lbge (0x0f) = 0x02 host interf aces the host interface provides access to read and write the registers in the device. the interface consists of serial host interface and parallel host interface. by pulling pin mode2 to vddio/2 or to high, the device can be set to work in serial mode and in parallel mode respectively. parallel host interface the interface is compatible with motorola or intel host. pins mode1 and mode0 are used to select the operating mode of the parallel host interface. when pin mode1 is pulled to low, the host uses separate address bus and data bus. when high, multiplexed address/data bus is used. when pin mode0 is pulled to low, the par- allel host interface is configured for motorola compatible hosts. when high, for intel compatible hosts. this is well described in the pin de- scription . the host interface pins in each operation mode is tabu- lated in table-12. figure - 17c. taos with analog loopback jitter attenuator b8zs/ hdb3/ami decoder b8zs/ hdb3/ami encoder slicer peak detector clk&data recovery (dpll) line driver waveform shaper los detector one of eight identical channels rtipn rringn ttipn tringn losn rclkn rdn/rdpn cvn/rdnn tclkn bpvin/tdnn tdn/tdpn transmit all ones
24 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit service the interrupt read interrupt status register read corresponding status register interrupt allowed interrupt condition exist? yes no figure - 19. interrupt service routine figure - 18. serial host mode timing a1 a3 a2 a4 a5 a6 d0 d1 d2 d3 d4 d5 d6 d7 r/ w d0 d1 d2 d3 d4 d5 d6 d7 a7 input data byte address/command byte high impedance driven while r/ w =1 sdi sdo sclk cs 1 2 2 note: 1. while r/ w =1, read from IDT82V2048; while r/ w =0, write to IDT82V2048. 2. ignored. serial host interface by pulling pin mode2 to vddio/2, the device operates in the serial host mode. in this mode, the registers are accessible through a 16-bit word which contains an 8-bit command/address byte (bit r/ w and 5- address-bit a1~a5, a6 and a7 are ignored) and a subsequent 8-bit data byte (d0~d7). when bit r/ w is 1, data is read out at pin sdo. when bit r/ w is 0, data is written into pin sdi to the register which is indicated by address bits a5~a1. interrupt handling interrupt sources there are four kinds of interrupt sources: 1. status change in the los (loss of signal) status register(04h). the analog/digital loss of signal detector continuously monitors the re- ceived signal to update the specific bit in los which indicates presence or absence of a los condition. 2. status change in the df (driver fault) status register(05h). the automatic power driver circuit continuously monitors the output drivers signal to update the specific bit in dfm which indicates presence or ab- sence of a secondary driver short circuit condition. 3. status change in the ais (alarm indication signal) status register(13h). the ais detector monitors the received signal to up- date the specific bit in ais which indicates presence or absence of a ais condition. 4. status change in the e-lbs (inband loopback code receive) status register, (expanded 0bh). the iblc detector monitors the inband loopback activation or deactivation code in received signal to update the specific bit in e-lbs which indicates presence or absence of an inband loopback condition. table - 12. parallel host interf ace pins mode[2:0] host interface generic control, data, and output pin name 100 non-multiplexed motorola interface cs , ack , ds , r/ w , as , a[4:0], d[7:0], int 101 non-multiplexed intel interface cs , rdy, wr , rd , ale, a[4:0], d[7:0], int 110 multiplexed motorola interface cs , ack , ds , r/ w , as , ad[7:0], int 111 multiplexed intel interface cs , rdy, wr , rd , ale, ad[7:0], int
25 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit interrupt enable the IDT82V2048 provides a latched interrupt output ( int ) and the four kinds of interrupts are all reported by this pin. when the interrupt mask register ( losm , dfm , aism and e-lbm ) is set to ?1?, the inter- rupt status register ( losi, dfi , aisi and e-lbi ) is enabled respec- tively. whenever there is a transition (?0? to ?1? or ?1? to ?0?) in the corre- sponding status register, the interrupt status register will change into ?1?, which means an interrupt occurs, and there will be a transition from high to low on int . an external pull-up resistor of approximately 10k w is required to support the wire-or operation of int . when any of the four interrupt mask registers is set to ?0? (the power-on default value is ?0?), the corresponding interrupt status register is disabled and the transition on status register is ignored. interrupt clearing when an interrupt occurs, the interrupt status registers ( losi, dfi, aisi and e-lbi ) are read to identify the interrupt source. and these registers will be cleared to ?0? after the corresponding status register ( los, df, ais and e-lbs ) being read. the status registers will be cleared once the corresponding conditions are met. pin int is pulled high when there are no pending interrupt left. the interrupt handling in the interrupt service routine is showed fig- ure-19. g.772 monitoring the eight channels of IDT82V2048 can all be configured to work as regular transceivers. in applications using only seven channels (channels 1 to 7), channel 0 is configured to non-intrusively monitor any of the other channels? inputs or outputs on the line side. the monitoring is non-intrusive per itu-t g.772. figure-20 shows the monitoring principle. the receiver or transmitter path to be monitored is configured by pin mc[0:3] in hardware mode or by pmon in host mode (refer to programming information for details). the signal which is monitored goes through the clock and data recovery circuit of channel 0. the monitored clock can output on rclk0 which can be used as a timing interfaces derived from e1 signal. the monitored data can be observed digitally at the output pin rclk0, rd0/rdp0 and rdn0. los detector is still in use in channel 0 for the monitored signal. in monitoring mode, channel 0 can be configured to the remote loopback. the signal which is being monitored will output on ttip0 and tring0. the output signal can then be connected to a standard test equipment with an e1 electrical interface for non-intrusive monitoring.
26 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit jitter attenuator jitter attenuator b8zs/ hdb3/ami decoder b8zs/ hdb3/ami encoder slicer peak detector clk&data recovery (dpll) line driver waveform shaper los detector channel n ( 7 > n > 1 ) rtipn rringn ttipn tringn losn rclkn rdn/rdpn cvn/rdnn tclkn bpvin/tdnn tdn/tdpn g.772 monitor transmit all ones jitter attenuator jitter attenuator b8zs/ hdb3/ami decoder b8zs/ hdb3/ami encoder remote loopback slicer peak detector clk&data recovery (dpll) line driver waveform shaper los detector channel 0 los0 rclk0 rd0/rdp0 cv0/rdn0 tclk0 bpvi0/tdn0 td0/tdp0 transmit all ones rtip0 rring0 ttip0 tring0 figure - 20. monitoring principle
27 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit pr ogramming informa tion register list and map there are 23 primary registers (including an address pointer control register), including 16 expanded registers in the device. whatever the control interface is, 5 address bits are used to set the registers. in non-multiplexed parallel interface mode, the five dedicated address bits are a[4:0]. in multiplexed parallel interface mode, ad[4:0] carries the address information. in serial interface mode, a[5:1] are used address hex serial interface a7-a1 parallel interface a7-a0 register r/w explanation 00 xx00000 xxx00000 id r device id register 01 xx00001 xxx00001 alb r/w analog loopback configuration register 02 xx00010 xxx00010 rlb r/w remote loopback configuration register 03 xx00011 xxx00011 tao r/w transmit all one code configuration register 04 xx00100 xxx00100 los r loss of signal status register 05 xx00101 xxx00101 df r driver fault status register 06 xx00110 xxx00110 losm r/w los interrupt mask register 07 xx00111 xxx00111 dfm r/w driver fault interrupt mask register 08 xx01000 xxx01000 losi r los interrupt status register 09 xx01001 xxx01001 dfi r driver fault interrupt status register 0a xx01010 xxx01010 rs w software reset register 0b xx01011 xxx01011 pmon r/w performance monitor configuration register 0c xx01100 xxx01100 dlb r/w digital loopback configuration register 0d xx01101 xxx01101 lac r/w los/ais criteria configuration register 0e xx01110 xxx01110 atao r/w automatic tao configuration register 0f xx01111 xxx01111 gcf r/w global configuration register 10 xx10000 xxx10000 tsia r/w indirect address register for transmit template select 11 xx10001 xxx10001 ts r/w transmit template select register 12 xx10010 xxx10010 oe r/w output enable configuration register 13 xx10011 xxx10011 ais r ais status register 14 xx10100 xxx10100 aism r/w ais interrupt mask register 15 xx10101 xxx10101 aisi r ais interrupt status register 16 xx10110 xxx10110 17 xx10111 xxx10111 18 xx11000 xxx11000 19 xx11001 xxx11001 1a xx11010 xxx11010 1b xx11011 xxx11011 1c xx11100 xxx11100 1d xx11101 xxx11101 1e xx11110 xxx11110 reserved 1f xx11111 xxx11111 addp r/w address pointer control register for switching between primary register bank and expanded register bank table - 13. primar y register list to address the register. the address pointer control register ( addp ), addressed as 11111 or 1f hex, switches between primary registers bank and expanded registers bank. by setting the content of addp to aah, the 5 address bits point to the expanded register bank, that is, 16 expanded registers are then available to access. by clearing addp, the primary registers are accessible again.
28 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit address hex serial interface a7 - a1 parallel interface a7 - a0 register r/w explanation 00 xx00000 xxx00000 e - sing r/w single rail mode setting register 01 xx00001 xxx00001 e - code r/w encoder/decoder selection register 02 xx00010 xxx00010 e - crs r/w clo ck recovery enable/disable register 03 xx00011 xxx00011 e - rpdn r/w receiver n powerdown enable/disable register 04 xx00100 xxx00100 e - tpdn r/w transmitter n powerdown enable/disable register 05 xx00101 xxx00101 e - czer r/w consecutive zero detect enable/ disable register 06 xx00110 xxx00110 e - codv r/w code violation detect enable/disable register 07 xx00111 xxx00111 e - equa r/w enable equalizer enable/disable register 08 xx01000 xxx01000 e - lbcf r/w inband loopback configuration register 09 xx01001 xxx01 001 e - lbac r/w inband loopback activation code register 0a xx01010 xxx01010 e - lbdc r/w inband loopback deactivation code register 0b xx01011 xxx01011 e - lbs r inband loopback code receive status register 0c xx01100 xxx01100 e - lbm r/w inband loopback inte rrupt mask register 0d xx01101 xxx01101 e - lbi r inband loopback interrupt status register 0e xx01110 xxx01110 e - lbgs r/w inband loopback activation/deactivation code generator selection register 0f xx01111 xxx01111 e - lbge r/w inband loopback activation/ deactivation code generator enable register 10 xx10000 xxx10000 11 xx10001 xxx10001 12 xx10010 xxx10010 13 xx10011 xxx10011 14 xx10100 xxx10100 15 xx10101 xxx10101 16 xx10110 xxx10110 17 xx10111 xxx10111 18 xx11000 xxx11000 19 xx1100 1 xxx11001 1a xx11010 xxx11010 1b xx11011 xxx11011 1c xx11100 xxx11100 1d xx11101 xxx11101 1e xx11110 xxx11110 test 1f xx11111 xxx11111 addp r/w address pointer control register for switching between primary register bank and expanded register bank table - 14. exp anded (indirect address mode) register list
29 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit table - 15. primar y register map register address r/w default b7 b6 b5 b4 b3 b2 b1 b0 id 00 hex r/w default id 7 r 0 id 6 r 0 id 5 r 0 id 4 r 1 id 3 r 0 id 2 r 0 id 1 r 0 id 0 r 0 alb 01 hex r/w default alb 7 r/w 0 alb 6 r/w 0 alb 5 r/w 0 alb 4 r/w 0 alb 3 r/w 0 alb 2 r/w 0 alb 1 r/w 0 alb 0 r/w 0 rlb 02 hex r/w default rlb 7 r/w 0 rlb 6 r/w 0 rlb 5 r/w 0 rlb 4 r/w 0 rlb 3 r/w 0 rlb 2 r/w 0 rlb 1 r/w 0 rlb 0 r/w 0 tao 03 hex r/w default tao 7 r/w 0 tao 6 r/w 0 tao 5 r/w 0 tao 4 r/w 0 tao 3 r/w 0 tao 2 r/w 0 tao 1 r/w 0 tao 0 r/w 0 los 04 hex r/w default los 7 r 0 los 6 r 0 los 5 r 0 los 4 r 0 los 3 r 0 los 2 r 0 los 1 r 0 los 0 r 0 df 05 hex r/w default df 7 r 0 df 6 r 0 df 5 r 0 df 4 r 0 df 3 r 0 df 2 r 0 df 1 r 0 df 0 r 0 losm 06 hex r/w default losm 7 r/w 0 losm 6 r/w 0 losm 5 r/w 0 losm 4 r/w 0 losm 3 r/w 0 losm 2 r/w 0 losm 1 r/w 0 losm 0 r/w 0 dfm 07 hex r/w default dfm 7 r/w 0 dfm 6 r/w 0 dfm 5 r/w 0 dfm 4 r/w 0 dfm 3 r/w 0 dfm 2 r/w 0 dfm 1 r/w 0 dfm 0 r/w 0 losi 08 hex r/w default losi 7 r 0 losi 6 r 0 losi 5 r 0 losi 4 r 0 losi 3 r 0 losi 2 r 0 losi 1 r 0 losi 0 r 0 dfi 09 hex r/w default dfi 7 r 0 dfi 6 r 0 dfi 5 r 0 dfi 4 r 0 dfi 3 r 0 dfi 2 r 0 dfi 1 r 0 dfi 0 r 0 rs 0a hex w default rs 7 w 1 rs 6 w 1 rs 5 w 1 rs 4 w 1 rs 3 w 1 rs 2 w 1 rs 1 w 1 rs 0 w 1 pmon 0b hex r/w default - r/w 0 - r/w 0 - r/w 0 - r/w 0 mc 3 r/w 0 mc 2 r/w 0 mc 1 r/w 0 mc 0 r/w 0 dlb 0c hex r/w default dlb 7 r/w 0 dlb 6 r/w 0 dlb 5 r/w 0 dlb 4 r/w 0 dlb 3 r/w 0 dlb 2 r/w 0 dlb 1 r/w 0 dlb 0 r/w 0 lac 0d hex r/w default lac 7 r/w 0 lac 6 r/w 0 lac 5 r/w 0 lac 4 r/w 0 lac 3 r/w 0 lac 2 r/w 0 lac 1 r/w 0 lac 0 r/w 0 atao 0e hex r/w default atao 7 r/w 0 atao 6 r/w 0 atao 5 r/w 0 atao 4 r/w 0 atao 3 r/w 0 atao 2 r/w 0 atao 1 r/w 0 atao 0 r/w 0 gcf 0f hex r/w default - r/w 0 aise r/w 0 scpb r/w 0 code r/w 0 jadp r/w 0 jabw r/w 0 jacf 1 r/w 0 jacf 0 r/w 0
30 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit tsia 10 hex r/w default - r/w 0 - r/w 0 - r/w 0 - r/w 0 - r/w 0 tsia 2 r/w 0 tsia 1 r/w 0 tsia 0 r/w 0 ts 11 hex r/w default - r/w 0 - r/w 0 - r/w 0 - r/w 0 - r/w 0 ts 2 r/w 0 ts 1 r/w 0 ts 0 r/w 0 oe 12 hex r/w default oe 7 r/w 0 oe 6 r/w 0 oe 5 r/w 0 oe 4 r/w 0 oe 3 r/w 0 oe 2 r/w 0 oe 1 r/w 0 oe 0 r/w 0 ais 13 hex r/w default ais 7 r 0 ais 6 r 0 ais 5 r 0 ais 4 r 0 ais 3 r 0 ais 2 r 0 ais 1 r 0 ais 0 r 0 aism 14 hex r/w default aism 7 r/w 0 aism 6 r/w 0 aism 5 r/w 0 aism 4 r/w 0 aism 3 r/w 0 aism 2 r/w 0 aism 1 r/w 0 aism 0 r/w 0 aisi 15 hex r/w default aisi 7 r 0 aisi 6 r 0 aisi 5 r 0 aisi 4 r 0 aisi 3 r 0 aisi 2 r 0 aisi 1 r 0 aisi 0 r 0 addp 1f hex r/w default addp 7 r/w 0 addp 6 r/w 0 addp 5 r/w 0 addp 4 r/w 0 addp 3 r/w 0 addp 2 r/w 0 addp 1 r/w 0 addp 0 r/w 0 register address r/w default b7 b6 b5 b4 b3 b2 b1 b0 table - 15. primar y register map (continued)
31 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit register address r/w default b7 b6 b5 b4 b3 b2 b1 b0 e - sing 00 hex r/w default sing 7 r/w 0 sing 6 r/w 0 sing 5 r/w 0 sing 4 r/w 0 sing 3 r/w 0 sing 2 r/w 0 sing 1 r/w 0 sing 0 r/w 0 e - code 01 hex r/w default code 7 r/w 0 code 6 r/w 0 code 5 r/w 0 code 4 r/w 0 code 3 r/w 0 code 2 r/w 0 code 1 r/w 0 code 0 r/w 0 e - crs 02 hex r/w default crs 7 r/w 0 crs 6 r/w 0 crs 5 r/w 0 crs 4 r/w 0 crs 3 r/w 0 crs 2 r/w 0 crs 1 r/w 0 crs 0 r/w 0 e - rpdn 03 hex r/w default rpdn 7 r/w 0 rpdn 6 r/w 0 rpdn 5 r/w 0 rpdn 4 r/w 0 rpdn 3 r/w 0 rpdn 2 r/w 0 rpdn 1 r/w 0 rpdn 0 r/w 0 e - tpdn 04 hex r/w default tpdn 7 r/w 0 tpdn 6 r/w 0 tpdn 5 r/w 0 tpdn 4 r/w 0 tpdn 3 r/w 0 tpdn 2 r/w 0 tpdn 1 r/w 0 tpdn 0 r/w 0 e - czer 05 hex r/w default czer 7 r/w 0 czer 6 r/w 0 czer 5 r/w 0 czer 4 r/w 0 czer 3 r/w 0 czer 2 r/w 0 czer 1 r/w 0 czer 0 r/w 0 e - codv 06 hex r/w default codv 7 r/w 0 codv 6 r/w 0 codv 5 r/w 0 codv 4 r/w 0 codv 3 r/w 0 codv 2 r/w 0 codv 1 r/w 0 codv 0 r/w 0 e - equa 07 hex r/w default equ a 7 r/w 0 equa 6 r/w 0 equa 5 r/w 0 equa 4 r/w 0 equa 3 r/w 0 equa 2 r/w 0 equa 1 r/w 0 equa 0 r/w 0 e - lbcf 08 hex r/w default - r/w 0 - r/w 0 lbde r/w 0 albe r/w 0 lbal 1 r/w 0 lbal 0 r/w 0 lbdl 1 r/w 0 lbdl 0 r/w 0 e - lbac 09 hex r/w default lbac 7 r/w 0 lbac 6 r/w 0 lbac 5 r/w 0 lbac 4 r/w 0 lbac 3 r/w 0 lbac 2 r/w 0 lbac 1 r/w 0 lbac 0 r/w 0 e - lbdc 0a hex r/w default lbdc 7 r/w 0 lbdc 6 r/w 0 lbdc 5 r/w 0 lbdc 4 r/w 0 lbdc 3 r/w 0 lbdc 2 r/w 0 lbdc 1 r/w 0 lbdc 0 r/w 0 e - lbs 0b hex r default lbs 7 r 0 lbs 6 r 0 lbs 5 r 0 lbs 4 r 0 lbs 3 r 0 lbs 2 r 0 lbs 1 r 0 lbs 0 r 0 e - lbm 0c hex r/w default lbm 7 r/w 0 lbm 6 r/w 0 lbm 5 r/w 0 lbm 4 r/w 0 lbm 3 r/w 0 lbm 2 r/w 0 lbm 1 r/w 0 lbm 0 r/w 0 e - lbi 0dhex r/w default lbi 7 r 0 lbi 6 r 0 lbi 5 r 0 lbi 4 r 0 lbi 3 r 0 lbi 2 r 0 lbi 1 r 0 lbi 0 r 0 e - lbgs 0e hex r/w default lbgs 7 r/w 0 lbgs 6 r/w 0 lbgs 5 r/w 0 lbgs 4 r/w 0 lbgs 3 r/w 0 lbgs 2 r/w 0 lbgs 1 r/w 0 lbgs 0 r/w 0 e - lbge 0f hex r/w default lbge 7 r/w 0 lbge 6 r/w 0 lbge 5 r/w 0 lbge 4 r/w 0 lb ge 3 r/w 0 lbge 2 r/w 0 lbge 1 r/w 0 lbge 0 r/w 0 addp 1f hex r/w default addp 7 r/w 0 addp 6 r/w 0 addp 5 r/w 0 addp 4 r/w 0 addp 3 r/w 0 addp 2 r/w 0 addp 1 r/w 0 addp 0 r/w 0 table - 16. exp anded (indirect address mode) register map
32 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit symbol position default description id[7:0] id.7 - 0 10 h an 8 - bit word is pre - set into the device as the identification and revision number. this number is different with the functional changes and is mask programmed. symbol position default description alb[7:0] alb.7 - 0 00 h 0 = normal operation. (default) 1 = analog loopback enabled. symbol position default description rlb[7:0] rlb.7 - 0 00 h 0 = normal operation. (default) 1 = remote loopback enabled. symbol position default description tao[7:0] tao.7 - 0 00 h 0 = normal operation. (default) 1 = transmit all one code. symbol position default description los[7:0] los.7 - 0 00 h 0 = normal operation. (default) 1 = loss of signal detected. symbol position default description df[7:0] df.7 - 0 00 h 0 = normal operation. (default) 1 = driver fault detected. note that df is available only in t1 mode with 3.3v (without transmit series resistors). register description primary register description id : device id register (r, address = 00 hex) alb : analog loopback configuration register (r/w, address = 01 hex) rlb : remote loopback configuration register (r/w, address = 02 hex) tao : transmit all one code configuration register (r/w, address = 03 hex) los : loss of signal status register (r, address = 04 hex) df : driver fault status register (r, address = 05 hex) losm : loss of signal interrupt mask register (r/w, address = 06 hex) dfm : driver fault interrupt mask register (r/w, address = 07 hex) symbol position default description losm[7:0] losm.7 - 0 00 h 0 = los interrupt is not allowed. (default) 1 = los interrupt is allowed. symbol position default description dfm[7:0] dfm.7 - 0 00 h 0 = driver fault interrupt is not allowed. (default) 1 = driver fault interrupt is allowed.
33 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit symbol position default description - pmon.7 - 4 0000 0 = normal operation. (default) 1 = reserved. mc[3:0] monitoring configuration 0000 normal operation without monitoring. 0001 monitoring receiver 1. 0010 monitoring re ceiver 2. 0011 monitoring receiver 3. 0100 monitoring receiver 4. 0101 monitoring receiver 5. 0110 monitoring receiver 6. 0111 monitoring receiver 7. 1000 normal operation without monitoring. 1001 monitoring transmitter 1. 1 010 monitoring transmitter 2. 1011 monitoring transmitter 3. 1100 monitoring transmitter 4. 1101 monitoring transmitter 5. 1110 monitoring transmitter 6. mc[3:0] pmon.3 - 0 0000 1111 monitoring transmitter 7. symbol position default description dlb[7:0] dlb.7 - 0 00 h 0 = normal operation. (default) 1 = digital loopback enabled. symbol position default description lac[7:0] lac.7 - 0 00 h for e1 mode, the criterion is selected as below: 0 = g.775 mode. (default) 1 = etsi 300233 mode. for t1 mode, the criterion meets t1.231. symbol position default description rs[7:0] rs.7 - 0 ff h writing to this register will not change the content in this register but initiate a 1 m s reset cycle, which means all the registers in the device are set to their default values. rs: software reset register (w, address = 0a hex) pmon: performance monitor configuration register (r/w, address = 0b hex) dlb : digital loopback configuration register (r/w, address = 0c hex) lac : los/ais criteria configuration register (r/w, address = 0d hex) losi : loss of signal interrupt status register (r, address = 08 hex) symbol position default description losi[7:0] losi.7 - 0 00 h 0 = (default). or after a los read operation. 1 = any transition on losn (corresponding losmn is set to 1). dfi : driver fault interrupt status register (r, address = 09 hex) symbol position default description dfi[7:0] dfi.7 - 0 00 h 0 = (default). or after a df read operation. 1 = any transition on dfn (corresponding dfmn is set to 1).
34 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit symbol position default description atao[7:0] atao.7 - 0 00 h 0 = no automatic tao. (default) 1 = automatic transmit all ones to the line side on los. atao : automatic tao configuration register (r/w, address = 0e hex) symbol position default description - tsia.7 - 3 00000 0 = normal operation. (default) 1 = reserved. tsia[2:0] channel ts i a[2:0] channel 000 0 100 4 001 1 101 5 010 2 110 6 tsia[2:0] tsia.2 - 0 000 011 3 111 7 symbol position default description - gcf.7 0 0 = normal operation. (default) 1 = reserved. aise gcf.6 0 ais enable during los. 0 = ais insertion to the system side disabled on los. (default) 1 = ais insertion to the system side enabled on los. scpb g cf.5 0 short circuit protection enable. 0 = short circuit protection is enabled. (default) 1 = short circuit protection is disabled. code gcf.4 0 line code enable. 0 = b8zs/hdb3 encoder/decoder enabled. (default) 1 = ami encoder/decoder enabled. jitter attenuator depth select. jadp fifo 0 32 - bit (default) jadp g cf.3 0 1 64 - bit jitter transfer function bandwidth select. jabw t1 e1 0 2.5hz (default) 1.7hz (default) jabw gcf.2 0 1 5hz 6.5hz jitter attenuator c onfiguration. jacf[1:0] jitter attenuator (ja) configuration 00 ja not used. (default) 01 ja in transmit path. 10 ja not used. jacf[1:0] gcf.1 - 0 00 11 ja in receive path. gcf : global configuration register (r/w, address = 0f hex) tsia : indirect address register for transmit template select registers (r/w, address = 10 hex)
35 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit symbol position default description addp[7:0] addp.7 - 0 00 h two kinds of configuration in this register can be set to switch between primary register bank and expanded register bank. when power up, the address pointer will point to the top address of prim ary register bank automatically. 00h = the address pointer points to the top address of primary register bank (default). aah = the address pointer points to the top address of expanded register bank. symbol position default description aisi[7:0] aisi.7 - 0 00 h 0 = (default), or after an ais read operation 1 = any transition on aisn . (corresponding aismn is set to 1.) symbol position default description oe[7:0] oe.7 - 0 00 h 0 = transmit drivers enabled. (default) 1 = transmit drivers placed in high impedance state. symbol position default description ais[7:0] ais.7 - 0 00 h 0 = normal operation. (default) 1 = ais detected. symbol position default description aism[7:0] aism.7 - 0 00 h 0 = ais interrupt is not allowed. (default) 1 = ais interrupt is allowed. oe : output enable configuration register (r/w, address = 12 hex) ais : alarm indication signal status register (r, address = 13 hex) aism : alarm indication signal interrupt mask register (r/w, address = 14 hex) aisi : alarm indication signal interrupt status register (r, address = 15 hex) addp : address pointer control register (r/w, address = 1f hex) symbol position default description - ts.7 - 3 00000 0 = normal operation. (default) 1 = reserved. ts[2:0] select one of eight built - in transmit template for different applications. ts[2:0] mode cable length 000 e1 75 w coaxial cable/120 w twisted pair cable. 001 010 reserved. 011 t1 0 - 133 ft. 100 t1 133 - 266 ft. 101 t1 266 - 399 ft. 110 t1 399 - 533 ft. ts[2 - 0] ts.2 - 0 000 111 t1 533 - 655 ft. ts : transmit template select register (r/w, address = 11 hex)
36 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit symbol position default description sing[7:0] sing.7 - 0 00 h 0 = pin tdnn selects single rail mode or dual rail mode. (default) 1 = single rail mode enabled (with crsn=0) symbol position default description code[7:0] code.7 - 0 00 h line code selection. coden selects ami or b8zs/hdb3 encoder/decoder on per - channel basis with singn = 1 and crsn = 0. 0 = b8zs/hdb3 encoder/decoder enabled. (default) 1 = ami encoder/decoder ena bled. symbol position default description crs[7:0] crs.7 - 0 00 h 0 = clock recovery enabled. (default) 1 = clock recovery disabled. expanded register description e-sing : single rail mode setting register (r/w, expanded address = 00 hex) e-code : encoder/decoder selection register (r/w, expanded address = 01 hex) e-crs : clock recovery enable/disable selection register (r/w, expanded address = 02 hex) symbol position default description tpdn[7:0] tpdn.7 - 0 00 h 0 = normal operation. (default) 1 = power down in transmitter n (the corresponding transmit output driver enters a low power high impedance mode). note that transmitter n is power down when eit her pin tclkn is pulled to low or tpdnn is set to 1. e-tpdn : transmitter n powerdown register (r/w, expanded address = 04 hex) symbol position default description rpdn[7:0] rpdn.7 - 0 00 h 0 = normal operation. (default) 1 = power down in receiver n. e-rpdn : receiver n powerdown register (r/w, expanded address = 03 hex) symbol position default description czer[7:0] czer.7 - 0 00 h 0 = excessive zero detect disabled. (default) 1 = excessive zero detect enabled for b8zs/hdb3 decoder in single rail mode. symbol position default description codv[7:0] codv.7 - 0 00 h 0 = code violation detect enable for b8zs/hdb3 decoder in single rail mode. (default) 1 = code violation detect disable. e-czer : consecutive zero detect enable/disable register (r/w, expanded address = 05 hex) e-codv : code violation detect enable/disable register (r/w, expanded address = 06 hex) symbol position default description equa[7:0] equa.7 - 0 00 h 0 = normal operation. (default) 1 = equalizer in receiver n enabled, which can improved the receive performance when transmission length is more than 200 m. e-equa : receive equalizer enable/disable register (r/w, expanded address = 07 hex)
37 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit symbol position default description lbs[7:0] lbs.7 - 0 00 h 0 = normal operation (default). or loopback deactivation code detected . 1 = loopback activation code detected. symbol position default description lbm[7:0] lbm.7 - 0 00 h 0 = lbi interrupt is not allowed (default) 1 = lbi interrupt is allowed. e-lbac : inband loopback activation code register (r/w, expanded address = 09 hex) symbol position default description lbdc[7:0] lbdc.7 - 0 00 h lbdc[7:0] = 8 - bit (or 4 - bit) repeating deactivate code is programmed with the length limitation in lbdl[1:0]. lbdc[7:1] = 7 - bit repeating deactivate code is programmed with the length limitation in lbdl[1:0]. lbdc[7:2] = 6 - bit (or 3 - bit) repeating deactivate code is programmed with the length limitation in lbdl[1:0]. lbdc[7:3] = 5 - bit repeating deactivate code is programmed with the length limitation in lbdl[1:0]. note that this register is globa l control. symbol position default description lbac[7:0] lbac.7 - 0 00 h lbac[7:0] = 8 - bit (or 4 - bit) repeating activate code is programmed with the length limitation in lbal[1:0]. lbac[7:1] = 7 - bit repeating activate code is programmed with the length limitation in l bal[1:0]. lbac[7:2] = 6 - bit (or 3 - bit) repeating activate code is programmed with the length limitation in lbal[1:0]. lbac[7:3] = 5 - bit repeating activate code is programmed with the length limitation in lbal[1:0]. note1: when setting a value in e - lbac o r e - lbdc that is less than 8 - bits, the most significant bits must be replicated in the unused least significant bits. e.g. if setting a 5 - bit code = 11000, the register value should be 11000110. here b7 is repeated in b2; b6 is repeated in b1; b5 is repe ated in bo. note2: this register is global control. e-lbdc : inband loopback deactivation code register (r/w, expanded address = 0a hex) e-lbs : inband loopback receive status register (r, expanded address = 0b hex) e-lbm : inband loopback interrupt mask register (r/w, expanded address = 0c hex) symbol position default description - lbcf.7 - 6 000 0 = normal operation. (default) 1 = reserved. lbde lbcf.5 0 loopback detector enable 0 = inband loopback code detection is disabled. (default) 1 = inband loopback code detection is enabled. albe lbcf.4 0 automatic loopback enable. 0 = automatic inband loopback disabled. 1 = automatic inband loopback enabled. lbal[1:0] lbcf.3 - 2 00 loopback activation code length. 00 = 5 - bit long activation code in lbac[7:3] is effective. 01 = 6 - bit long activation code in lbac[7:2] is effective. 10 = 7 - bit long activation code in lbac[7:1] is effective. 11 = 8 - bit long activation code in lbac[7:0] is effective. lbdl[1:0] lbcf.1 - 0 00 loopback deactivation code length. 00 = 5 - bit long deactivation code in lbdc[7:3] is ef fective. 01 = 6 - bit long deactivation code in lbdc[7:2] is effective. 10 = 7 - bit long deactivation code in lbdc[7:1] is effective. 11 = 8 - bit long deactivation code in lbdc[7:0] is effective. note that all these bits in e - lbcf are global control . e-lbcf : inband loopback configuration register (r/w, expanded address = 08 hex)
38 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit symbol position default description lbgs[7:0] lbgs.7 - 0 00 h 0 = activation code generator is selected in transmitter n. (default) 1 = deactivation code generator is selected in transmitter n. symbol position default description lbge[7:0] lbge.7 - 0 00 h 0 = activation/ deactivation code generator for inband loopback is disabled in transmitter n. (default) 1 = activation/deactivation code generator for inband loopback is enabled in transmitter n. symbol position default description lbi[7:0] lbi.7 - 0 00 h 0 = (default). or after a read of e - lbs operation. 1 = any transition on e - lbsn . (corresponding e - lbmn and bit lbde in e - lbcf are both set to 1.) e-lbi : inband loopback interrupt status register (r, expanded address = 0d hex) e-lbgs : inband loopback activation/deactivation code generator selection register (r/w, expanded address = 0e hex) e-lbge: inband loopback activation/deactivation code generator enable register (r/w, expanded address = 0f hex) reserved registers: primary registers 16 - 1e and are reservered. test registers: expand registers 10 - 1e are test registers. they must be set to 0.
39 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit ieee std 1149.1 jt a g test ac- cess por t the IDT82V2048 supports the digital boundary scan specification as described in the ieee 1149.1 standards. the boundary scan architecture consists of data and instruction reg- isters plus a test access port (tap) controller. control of the tap is achieved through signals applied to the test mode select (tms) and test clock (tck) input pins. data is shifted into the registers via the test data input (tdi) pin, and shifted out of the registers via the test data output (tdo) pin. both tdi and tdo are clocked at a rate determined by tck. the jtag boundary scan registers includes bsr (boundary scan register), idr (device identification register), br (bypass register) and ir (instruction register). these will be described in the following pages. refer to figure-21 for architecture. jt ag instructions and instruction register (ir) the ir (instruction register) with instruction decode block is used to select the test to be executed or the data register to be accessed or both. the instructions are shifted in lsb first to this 3-bit register. see table-17 for details of the codes and the instructions related. figure - 21. jtag architecture bsr (boundary scan register) idr (device identification register) br (bypass register) ir (instruction register) mux tdo tdi tck tms trst control<6:0> mux select tristate enable tap (test access port) controller parallel latched output digital output pins digital input pins
40 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit table - 17. instruction register description table - 18. device identifica tion register description ir code instruction comments 000 extest the external test instruction allows testing of the interconnection to other devices. when the current instruction is the extest instruction, the boundary scan register is placed between tdi and tdo. the signal on t he input pins can be sampled by loading the boundary scan register using the capture - dr state. the sampled values can then be viewed by shifting the boundary scan register using the shift - dr state. the signal on the output pins can be controlled by loading patterns shifted in through input tdi into the boundary scan register using the update - dr state. 100 sample / preload the sample instruction samples all the device inputs and outputs. for this instruction, the boundary scan register is placed between tdi and tdo. the normal path between IDT82V2048 logic and the i/o pins is maintained. primary device inputs and outputs can be sampled by loading the boundary scan register using the capture - dr state. the sampled values can then be viewed by shifting the boun dary scan register using the shift - dr state. 110 idcode the identification instruction is used to connect the identification register between tdi and tdo. the device's identification code can then be shifted out using the shift - dr state. 111 bypass the bypass instruction shifts data from input tdi to output tdo with one tck clock period delay. the instruction is used to bypass the device. jt ag da t a register device identification register (idr) the idr can be set to define the producer number, part number and the device revision, which can be used to verify the proper version or revision number that has been used in the system under test. the idr is 32 bits long and is partitioned as in table-18. data from the idr is shifted out to tdo lsb first. bypass register (br) the br consists of a single bit. it can provide a serial path between the tdi input and tdo output, bypassing the bsr to reduce test access times. boundary scan register (bsr) the bsr can apply and read test patterns in parallel to or from all the digital i/o pins. the bsr is a 98 bits long shift register and is initialized and read using the instruction extest or sample/ preload. each pin is related to one or more bits in the bsr. please refer to table-19 for details of bsr bits and their functions. test access port controller the tap controller is a 16-state synchronous state machine. figure- 22 shows its state diagram a description of each state follows. note that the figure contains two main branches to access either the data or instruction registers. the value shown next to each state transition in this figure states the value present at tms at each rising edge of tck. please refer to table-20 for details of the state description. bit no. bit symbol pin signal type comments 0 pout0 lp0 i/o 1 pin0 lp0 i/o 2 pout1 lp1 i/o 3 pin1 lp1 i/o 4 pout2 lp2 i/o 5 pin2 lp2 i/o 6 pout3 lp3 i/o 7 pin3 lp3 i/o 8 pout4 lp4 i/o 9 pin4 lp4 i/o 10 pout5 lp5 i/o 11 pin5 lp5 i/o 12 pout6 lp6 i/o 13 pin6 lp6 i/o 14 pout7 lp7 i/o table - 19. boundar y scan register description bit no. comments 0 set to ?1? 1~11 producer number 12~27 part number 28~31 device revision
41 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit bit no. bit symbol pin signal type comments 15 pin7 lp7 i/o 16 pios n/a - controls pin lp7~0. when ?0?, the pins are configured as outputs. the output values to the pins are set in pout7~0. when ?1?, the pins are tristated. the input values to the pins are read in pin7~0. 17 tclk1 tclk1 i 18 tdp1 tdp1 i 19 tdn1 tdn1 i 20 rclk1 rclk1 o 21 rdp1 rdp1 o 22 rdn1 rdn1 o 23 hzen1 n/a - controls pin rdp1, rdn1 and rclk1. when ?0?, the outputs are enabled on the pins. when ?1?, the pins are tristated. 24 los1 los1 o 25 tclk0 tclk0 i 26 tdp0 tdp0 i 27 tdn0 tdn0 i 28 rclk0 rclk0 o 29 rdp0 rdp0 o 30 rdn0 rdn0 o 31 hzen0 n/a - controls pin rdp0, rdn0 and rclk0. when ?0?, the outputs are enabled on the pins. when ?1?, the pins are tristated. 32 los0 los0 o 33 mode1 mode1 i 34 los3 los3 o 35 rdn3 rdn3 o 36 rdp3 rdp3 o 37 hzen3 n/a - controls pin rdp3, rdn3 and rclk3. when ?0?, the outputs are enabled on the pins. when ?1?, the pins are tristated. 38 rclk3 rclk3 o 39 tdn3 tdn3 i 40 tdp3 tdp3 i 41 tclk3 tclk3 i 42 los2 los2 o 43 rdn2 rdn2 o 44 rdp2 rdp2 o 45 hzen2 n/a - controls pin rdp2, rdn2 and rclk2. when ?0?, the outputs are enabled on the pins. when ?1?, the pins are tristated. 46 rclk2 rclk2 o 47 tdn2 tdn2 i 48 tdp2 tdp2 i 49 tclk2 tclk2 i 50 int int o 51 ack ack o 52 sdordys n/a - control pin ack . when ?0?, the output is enabled on pin ack . when ?1?, the pin is tristated. 53 wrb ds i 54 rdb r/ w i 55 ale ale i table - 19. boundar y scan register description (continued)
42 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit bit no. bit symbol pin signal type comments 56 csb cs i 57 mode0 mode0 i 58 tclk5 tclk5 i 59 tdp5 tdp5 i 60 tdn5 tdn5 i 61 rclk5 rclk5 o 62 rdp5 rdp5 o 63 rdn5 rdn5 o 64 hzen5 n/a - controls pin rdp5, rdn5 and rclk5. when ?0?, the outputs are enabled on the pins. when ?1?, the pins are tristated. 65 los5 los5 o 66 tclk4 tclk4 i 67 tdp4 tdp4 i 68 tdn4 tdn4 i 69 rclk4 rclk4 o 70 rdp4 rdp4 o 71 rdn4 rdn4 o 72 hzen4 n/a - controls pin rdp4, rdn4 and rclk4. when ?0?, the outputs are enabled on the pins. when ?1?, the pins are tristated. 73 los4 los4 o 74 oe oe i 75 clke clke i 76 los7 los7 o 77 rdn7 rdn7 o 78 rdp7 rdp7 o 79 hzen7 n/a - controls pin rdp7, rdn7 and rclk7. when ?0?, the outputs are enabled on the pins. when ?1?, the pins are tristated. 80 rclk7 rclk7 o 81 tdn7 tdn7 i 82 tdp7 tdp7 i 83 tclk7 tclk7 i 84 los6 los6 o 85 rdn6 rdn6 o 86 rdp6 rdp6 o 87 hzen6 n/a - controls pin rdp6, rdn6 and rclk6. when ?0?, the outputs are enabled on the pins. when ?1?, the pins are tristated. 88 rclk6 rclk6 o 89 tdn6 tdn6 i 90 tdp6 tdp6 i 91 tclk6 tclk6 i 92 mclk mclk i 93 mode2 mode2 i 94 a4 a4 i 95 a3 a3 i 96 a2 a2 i 97 a1 a1 i 98 a0 a0 i table - 19. boundar y scan register description (continued)
43 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit state description test logic reset in this state, the test logic is disabled. the device is set to normal operation. during initialization, the device initializes the instruction register with the idcode instruction. regardless of the original s tate of the controller, the controller enters the test - logic - reset state when the tms input is held high for at least 5 rising edges of tck. the controller remains in this state while tms is high. the device processor automatically enters this state at pow er - up. run - test/idle this is a controller state between scan operations. once in this state, the controller remains in the state as long as tms is held low. the instruction register and all test data registers retain their previous state. when tms is high and a rising edge is applied to tck, the controller moves to the select - dr state. select - dr - scan this is a temporary controller state and the instruction does not change in this state. the test data register selected by the current instruction retains its previous state. if tms is held low and a rising edge is applied to tck when in this state, the controller moves into the capture - dr state and a scan sequence for the selected test data register is initiated. if tms is held high and a rising edg e applied to tck, the controller moves to the select - ir - scan state. capture - dr in this state, the boundary scan register captures input pin data if the current instruction is extest or sample/preload. the instruction does not change in this state. th e other test data registers, which do not have parallel input, are not changed. when the tap controller is in this state and a rising edge is applied to tck, the controller enters the exit1 - dr state if tms is high or the shift - dr state if tms is low. shif t - dr in this controller state, the test data register connected between tdi and tdo as a result of the current instruction shifts data on stage toward its serial output on each rising edge of tck. the instruction does not change in this state. when th e tap controller is in this state and a rising edge is applied to tck, the controller enters the exit1 - dr state if tms is high or remains in the shift - dr state if tms is low. exit1 - dr this is a temporary state. while in this state, if tms is held hig h, a rising edge applied to tck causes the controller to enter the update - dr state, which terminates the scanning process. if tms is held low and a rising edge is applied to tck, the controller enters the pause - dr state. the test data register selected by the current instruction retains its previous value and the instruction does not change during this state. pause - dr the pause state allows the test controller to temporarily halt the shifting of data through the test data register in the serial path b etween tdi and tdo. for example, this state could be used to allow the tester to reload its pin memory from disk during application of a long test sequence. the test data register selected by the current instruction retains its previous value and the instr uction does not change during this state. the controller remains in this state as long as tms is low. when tms goes high and a rising edge is applied to tck, the controller moves to the exit2 - dr state. exit2 - dr this is a temporary state. while in thi s state, if tms is held high, a rising edge applied to tck causes the controller to enter the update - dr state, which terminates the scanning process. if tms is held low and a rising edge is applied to tck, the controller enters the shift - dr state. the test data register selected by the current instruction retains its previous value and the instruction does not change during this state. update - dr the boundary scan register is provided with a latched parallel output to prevent changes while data is shif ted in response to the extest and sample/preload instructions. when the tap controller is in this state and the boundary scan register is selected, data is latched into the parallel output of this register from the shift - register path on the falling edge o f tck. the data held at the latched parallel output changes only in this state. all shift - register stages in the test data register selected by the current instruction retain their previous value and the instruction does not change during this state. sele ct - ir - scan this is a temporary controller state. the test data register selected by the current instruction retains its previous state. if tms is held low and a rising edge is applied to tck when in this state, the controller moves into the capture - ir state, and a scan sequence for the instruction register is initiated. if tms is held high and a rising edge is applied to tck, the controller moves to the test - logic - reset state. the instruction does not change during this state. capture - ir in this cont roller state, the shift register contained in the instruction register loads a fixed value of ?100? on the rising edge of tck. this supports fault - isolation of the board - level serial test data path. data registers selected by the current instruction retai n their value and the instruction does not change during this state. when the controller is in this state and a rising edge is applied to tck, the controller enters the exit1 - ir state if tms is held high, or the shift - ir state if tms is held low. shift - ir in this state, the shift register contained in the instruction register is connected between tdi and tdo and shifts data one stage towards its serial output on each rising edge of tck. the test data register selected by the current instruction retain s its previous value and the instruction does not change during this state. when the controller is in this state and a rising edge is applied to tck, the controller enters the exit1 - ir state if tms is held high, or remains in the shift - ir state if tms is h eld low. table - 20. t ap controller st a te description
44 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit state description exit1 - ir this is a temporary state. while in this state, if tms is held high, a rising edge applied to tck causes the controller to enter the update - ir state, which terminates the scanning process. if tms is held low and a rising ed ge is applied to tck, the controller enters the pause - ir state. the test data register selected by the current instruction retains its previous value and the instruction does not change during this state. pause - ir the pause state allows the test cont roller to temporarily halt the shifting of data through the instruction register. the test data register selected by the current instruction retains its previous value and the instruction does not change during this state. the controller remains in this st ate as long as tms is low. when tms goes high and a rising edge is applied to tck, the controller moves to the exit2 - ir state. exit2 - ir this is a temporary state. while in this state, if tms is held high, a rising edge applied to tck causes the contr oller to enter the update - ir state, which terminates the scanning process. if tms is held low and a rising edge is applied to tck, the controller enters the shift - ir state. the test data register selected by the current instruction retains its previous val ue and the instruction does not change during this state. update - ir the instruction shifted into the instruction register is latched into the parallel output from the shift - register path on the falling edge of tck. when the new instruction has been latche d, it becomes the current instruction. the test data registers selected by the current instruction retain their previous value. table - 21. t ap controller st a te description (continued) test-logic reset run test/idle select-dr select-ir capture-dr capture-ir shift-dr shift-ir exit1-dr exit1-ir pause-dr pause-ir exit2-dr exit2-ir update-dr update-ir 1 0 0 1 1 1 0 0 0 0 0 0 1 1 1 0 1 0 1 1 1 0 1 0 1 0 1 1 0 0 0 1 figure - 22. jtag state diagram
45 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit absolute maximum rating recommended opera ting conditions symbol parameter min typ max unit vdda,vddd core power supply 3.13 3.3 3.47 v vddio i/o power supply 3.13 3.3 3.47 v 3.13 3.3 3.47 v vddt (1) transmitter supply 3.3v 5v 4.75 5.0 5.25 v t a ambient operating temperature - 40 25 85 c r l output load at ttip and tring 25 w i vdd average core power supply current (2) 55 65 ma i vddio io power supply current (5) 15 25 ma i vddt average transmitter power supply current, t1 mode (2, 3, 4) 50% ones density data: 100% ones density data: 230 440 ma symbol parameter min max unit vdda,vddd core power supply -0.5 4.0 v vddio0,vddio1 i/o power supply -0.5 4.0 v vddt0-7 transmit power supply -0.5 7.0 v input voltage, any digital pin gnd-0.5 5.5 v input voltage, any rtip and rring pin (1) gnd-0.5 vdda+0.5 vddd+0.5 v vin esd voltage, any pin (2) 2000 v transient latch-up current, any pin 100 ma input current, any digital pin (3) -10 10 ma iin dc input current, any analog pin (3) 100 ma pd maximum power dissipation in package 1.6 w tc case temperature 120 c ts storage temperature -65 +150 c caution exceeding these values may cause permanent damage. functional operation under these conditions is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. note: 1. referenced to ground 2. human body model 3. constant input current note: 1. for t1 applications, 5 v vddt is recommended. 2. maximum power and current consumption over the full operating temperature and power supply voltage range. includes all channels. 3. power consumption includes power absorbed by line load and external transmitter components. 4. t1 maximum values measured with maximum cable length (len = 111). typical values measured with typical cable length (len = 101). 5. digital output is driving 50pf load, digital input is within 10% of the supply rails.
46 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit po wer consumption symbol parameter len min typ max (1, 2) unit e1, 3.3v, 75 w load 50% ones density data: 100% ones density data: 000 000 - - 662 1100 - 1177 mw e1, 3.3 v, 120 w load 50% ones density data: 100% ones density data: 000 000 - - 576 930 - 992 mw e1, 5.0v, 75 w load 50% ones density data: 100% ones density data: 000 000 - - 910 1585 - 1690 mw e1, 5.0v, 120 w load 50% ones density data: 100% ones density data: 000 000 - - 785 1315 - 1410 mw t1, 3.3v, 100 w load (3) 50% ones density data: 100% ones density data: 101 111 - - 820 1670 - 1792 mw t1, 5.0v, 100 w load (3) 50% ones density data: 100% ones density data: 101 111 - - 1185 2395 - 2670 mw note: 1. maximum power and current consumption over the full operating temperature and power supply voltage range. includes all channels. 2. power consumption includes power absorbed by line load and external transmitter components. 3. t1 maximum values measured with maximum cable length (len = 111). typical values measured with typical cable length (len = 101). dc chara cteristics symbol parameter min typ max unit input low level voltage mode2, jas, lpn pins 1 3 vddio - 0.2 v il all other digital inputs pins 0.8 v input mid level voltage v im mode2, jas, l pn pins 1 3 vddio+0.2 1 2 vddio 2 3 vddio - 0.2 v input high voltage mode2, jas, lpn pins 2 3 vddio+ 0.2 v ih all other digital inputs pins 2.0 v v ol output low level voltag e (1) (iout=1.6ma) 0.4 v v oh output high level voltage (1) (iout=400 m a) 2.4 vddio v v ma analog input quiescent voltage (rtip, rring pin while floating) 1.33 1.4 1.47 v i h input high level current (mode2, jas, lpn pin) 50 m a i l input low level cu rrent (mode2, jas, lpn pin) 50 m a i i input leakage current tms, tdi, trst all other digital input pins - 10 50 10 m a a i zl tri - state leakage current - 10 10 m a z oh output high impedance on (ttip, tring pins) 150 k w note: 1. output drivers will output cmos logic levels into cmos loads.
47 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit transmitter chara cteristics symbol parameter min typ max unit v 0 - p output pulse amplitudes (1) e1, 75 w load e1,120 w load t1,100 w load 2.14 2.7 2.4 2.37 3.0 3.0 2.6 3.3 3.6 v v v v o - s zero (space) level e1, 75 w load e1,120 w load t1,100 w load - 0.237 - 0.3 - 0.15 0.237 0.3 0.15 v v v transmit amplitude variation with supply - 1 +1 % difference between pulse sequences for 17 consecutive pulses 200 mv t pw output pulse width at 50% of nominal amplitude e1: t1: 232 338 244 350 256 362 ns ns ratio of the amplitud es of positive and negative pulses at the center of the pulse interval 0.95 1.05 transmit return loss (2) e1,75 w 51 khz ? 102 khz 102 khz - 2.048 mhz 2.048 mhz ? 3.072 mhz 15 15 15 db db db e1,120 w 51 khz ? 102 khz 102 khz - 2.048 mhz 2.048 mhz ? 3.072 mhz 15 15 15 db db db rtx t1 (vddt=5v) 51 khz ? 102 khz 102 khz - 2.048 mhz 2.048 mhz ? 3.072 mhz 15 15 15 db db db intrinsic transmit jitter (tclk is jitter free, ja enable) e1: 20 hz ? 100 khz 0.050 u.i. jtx p - p t1: 10 hz ? 8 khz 8 khz ? 40 khz 10 hz ? 40 khz wide band 0.020 0.025 0.025 0.050 u.i.p - p u.i.p - p u.i.p - p u.i.p - p transmit path delay (ja is disabled) td single rail dual rail 8 3 u.i. u.i. i sc line short circuit current (3) 150 ma note: 1. e1:measured at the line output ports; t1: measured at the dsx 2. test at IDT82V2048 evaluation board 3. measured at 2x9.5 w series resistors and 1:2 transformer
48 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit receiver chara cteristics symbol parameter min typ max unit att permissible cable attenuation (e1:@1024khz, t1:@772khz) 15 db ia input amplitude 0.1 0.8 (1) vp sir signal to interference ratio margin (2) - 14 db sre data decision threshold (reference to peak inpu t voltage) 50 % data slicer threshold 150 mv analog loss of signal (3) threshold: hysteresis: 310 100 550 mv mv allowable consecutive zeros before los e1, g.775: e1, etsi300233: t1, t1.231 - 1993 32 2048 175 los reset clock recovery mode 12.5 % ones jrx p - p peak to peak intrinsic receive jitter (ja disabled) e1 (wide band): t1 (wide band): 0.0625 0.0625 u.i. u.i. jitter tolerance e1: 1 hz ? 20 hz 20 hz ? 2.4 khz 18 khz ? 100 khz 18.0 1.5 0.2 u.i. u.i. u.i. jtrx t1: 0.1 hz ? 1 hz 4.9 hz ? 300 hz 10 khz ? 100 khz 138.0 28.0 0.4 u.i. u.i. u.i. zdm receiver differential input impedance 120 k w zcm receiver common mode input impedance to gnd 10 k w rrx receive return loss 51 khz ? 102 khz 102 khz - 2.048 mhz 2.048 mhz ? 3.072 mhz 20 20 20 db db db receive path delay dual rail single rail 3 8 u.i. u.i. note: 1. for e1, the max limit is 1.5 vp. 2. e1: per g.703, o.151 @6db cable attenuation. t1: @655ft. of 22abam cable 3. the test circuit for this parameter is shown in figure 12. the analog signal is measured on the receiver line before the transformer (port a and port b in figure 12). and the receive line is a t1/e1 cable simulator.
49 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit jitter attenu a t or chara cteristics symbol parameter min typ max unit jitter transfer function corner (?3db) frequency host mode e1, 32/64 bit fifo jabw = 0: jabw = 1: t1, 32/64 bit fifo jabw = 0: jabw = 1: 1.7 6.6 2.5 5 hz hz hz hz f -3db hardware mode e1 t1 1.7 2.5 hz hz jitter attenuator e1: (1) @ 3 hz @ 40 hz @ 400 hz @ 100khz -0.5 -0.5 +19.5 +19.5 db t1: (2) @ 1 hz @ 20 hz @ 1khz @ 1.4khz @ 70khz 0 0 +33.3 40 40 db jitter attenuator latency delay td 32bit fifo: 64bit fifo: 16 32 u.i. u.i. input jitter tolerance before fifo overflow or underflow 32bit fifo: 64bit fifo: 28 56 u.i. u.i. output jitter in remote loopback (3) 0.11 u.i. note: 1. per g.736, see fig-38. 2. per at&t pub.62411, see fig-39. 3. per etsi ctr12/13 output jitter.
50 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit transceiver timing chara cteristics symbol parameter min typ max unit mclk frequency e1: t1: 2.048 1.544 mhz mclk tolerance - 100 100 ppm mclk duty cycle 40 60 % transmit path tclk frequency e1: t1: 2.048 1.544 mhz tclk tolerance - 50 +50 ppm tclk duty cycle 10 90 % t 1 transmit data setup time 40 ns t2 transmit data hold time 40 ns delay time of oe low to driver high z 1 us delay time of tclk low to driver high z 40 44 48 us receive path e1 +/ - 80 clock recovery capture range (1) t1 +/ - 180 ppm rclk duty cycle (2) 40 50 60 % rclk pulse width (2) t4 e1: t1: 457 607 488 648 519 689 ns rclk pulse width low time t5 e1: t1: 203 259 244 324 285 389 ns rclk pulse width high time t6 e1: t1: 203 259 244 324 285 389 ns rise/fall time (3) 20 n s receive data setup time t7 e1: t1: 200 200 244 324 ns receive data hold time t8 e1: t1: 200 200 244 324 ns rdn/rdp pulse width (mclk = h) (4) t9 e1: t1: 200 300 244 324 ns note: 1. relative to nominal frequency, mclk=+/-100 ppm 2. rclk duty cycle widths will vary depending on extent of received pulse jitter displacement. maximum and minimum rclk duty cycles are for worst case jitter conditions (0.2ui displacement for e1 per itu g.823). 3. for all digital outputs. c load = 15 pf 4. clock recovery is disabled in this mode.
51 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit figure - 24. transmit system interface timing figure - 25. receive system interface timing tdnn/bpvin tnn/tdpn tclk t1 t2 rdnn/cvn rdpn/rdn rclk t4 t7 t6 t7 t5 t8 t8 (clke = 0) (clke = 1) rdpn/rdn rdnn/cvn
52 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit jt a g timing chara cteristics symbol parameter min typ max unit comments t1 tck period 200 ns t2 tms to tck setup time tdi to tck setup time 50 ns t3 tck to tms hold time tck to tdi hold time 50 ns t4 tck to tdo delay time 100 ns figure - 26. jtag interface timing tck t1 t2 t3 tdo tms tdi t4
53 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit parallel host interf a ce timing chara cteristics intel mode read timing characteristics symbol parameter min typ max unit comments t1 active rd pulse width 90 ns note 1 t2 active cs to active rd setup time 0 ns t3 inactive rd to inactive cs hold time 0 ns t4 valid address to inactive ale setup time (in multiplexed mode) 5 ns t 5 invalid rd to address hold time (in non - multiplexed mode) 0 ns t6 active rd to data output enable time 7.5 15 ns t7 inactive rd to data tri - state delay time 7.5 15 ns t8 active cs to rdy delay time 6 12 ns t9 inactive cs to rdy tri - state del ay time 6 12 ns t10 inactive rd to inactive int delay time 20 ns t11 address latch enable pulse width (in multiplexed mode) 10 ns t12 address latch enable to rd setup time (in multiplexed mode) 0 ns t13 address setup time to valid data time (in non - multiplexed mode) inactive ale to valid data time (in multiplexed mode) 18 32 ns t14 inactive rd to active rdy delay time 10 15 ns t15 active rd to active rdy delay time 30 85 ns t16 inactive ale to address hold time (in multiplexed mode) 5 ns note 1: the t1 is determined by the start time of the valid data when the rdy signal is not used.
54 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit figure - 28. multiplexed intel mode read timing figure - 27. non-multiplexed intel mode read timing int rdy d[7:0] a[7:0] ale(=1) rd cs t1 t2 t3 t5 t6 t7 t8 t9 t10 t13 address data out t14 t15 int rdy ad[7:0] ale rd cs t1 t2 t3 t6 t7 t8 t9 t10 t4 t11 t12 address data out t15 t14 t16 t13
55 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit intel mode write timing characteristics figure - 30. multiplexed intel mode write timing figure - 29. non-multiplexed intel mode write timing symbol parameter min typ max unit comments t1 active wr pulse width 90 ns note 1 t2 active cs to active wr setup time 0 ns t3 inactive wr to inactive cs hold time 0 ns t4 valid address to latch enable setup time (in multiplexed mode) 5 ns t5 invalid wr to address hold time (in non-multiplexed mode) 2 ns t6 valid data to inactive wr setup time 5 ns t7 inactive wr to data hold time 10 ns t8 active cs to inactive rdy delay time 6 12 ns t9 active wr to active rdy delay time 30 85 ns t10 inactive wr to inactive rdy delay time 10 15 ns t11 invalid cs to rdy tri-state delay time 6 12 ns t12 address latch enable pulse width (in multiplexed mode) 10 ns t13 inactive ale to wr setup time (in multiplexed mode) 0 ns t14 inactive ale to address hold time (in multiplexed mode) 5 ns t15 address setup time to inactive wr time (in non-multiplexed mode) 5 ns note 1: the t1 can be 15ns when rdy signal is not used. rdy d[7:0] a[7:0] ale(=1) wr cs t2 t1 t3 t5 t6 t7 t8 t9 t10 t11 address write data t15 rdy ad[7:0] ale wr cs t1 t2 t3 t6 t7 t8 t9 t10 t4 t12 t13 write data address t11 t14
56 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit figure - 31. non-multiplexed motorola mode read timing figure - 32. multiplexed motorola mode read timing mot orola mode read timing characteristics int ack d[7:0] a[7:0] ale(=1) ds cs t1 address data out r/ w t2 t3 t4 t5 t6 t8 t10 t11 t12 t13 t7 t9 int ack ad[7:0] as ds cs data out address r/ w t1 t2 t3 t4 t5 t6 t7 t8 t11 t10 t12 t13 t14 t9 symbol parameter min typ max unit comments t1 active ds pulse width 90 ns note 1 t2 active cs to active ds setup time 0 ns t3 inactive ds to inactive cs hold time 0 ns t4 valid r/ w to active ds setup time 0 ns t5 inactive ds to r/ w hold tim e 0.5 ns t6 valid address to active ds setup time (in non - multiplexed mode) valid address to as setup time (in multiplexed mode) 5 ns t7 active ds to address hold time (in non - multiplexed mode) active as to address hold time (in multiplexed mode) 1 0 ns t8 active ds to data valid delay time (in non - multiplexed mode) active as to data valid delay time ( in multiplexed mode) 20 35 ns t9 active ds to data output enable time 7.5 15 ns t10 inactive ds to data tri - state delay time 7.5 15 ns t1 1 active ds to active ack delay time 30 85 ns t12 inactive ds to inactive ack delay time 10 15 ns t13 inactive ds to invalid int delay time 20 ns t14 active as to active ds setup time (in multiplexed mode) 5 ns note 1: the t1 is determined by the start time of the valid data when the ack signal is not used.
57 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit figure - 33. non-multiplexed motorola mode write timing mot orola mode write timing characteristics figure - 34. multiplexed motorola mode writing timing symbol parameter min typ max unit comments t1 active ds pulse width 90 ns note 1 t2 active cs to active ds setup time 0 ns t3 inactive ds to inactive cs hold time 0 ns t4 valid r/ w to active ds setup time 10 ns t5 inactive ds to r/ w hold time 0 ns t6 valid address to active ds setup time (in non-multiplexed mode) valid address to as setup time (in multiplexed mode) 10 ns t7 valid ds to address hold time (in non-multiplexed mode) valid as to address hold time (in multiplexed mode) 10 ns t8 valid data to inactive ds setup time 5 ns t9 inactive ds to data hold time 10 ns t10 active ds to active ack delay time 30 85 ns t11 inactive ds to inactive ack delay time 10 15 ns t12 active as to active ds (in multiplexed mode) 0 ns t13 inactive ds to inactive as hold time ( in multiplexed mode) 15 ns note 1: the t1 can be 15ns when the ack signal is not used. ack d[7:0] a[7:0] ale(=1) ds cs t1 address write data r/ w t2 t3 t4 t6 t7 t5 t8 t9 t10 t11 ack ad[7:0] as ds cs write data address r/ w t1 t2 t3 t4 t5 t6 t7 t8 t9 t13 t10 t11 t12
58 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit figure - 37. serial interface read timing with clke = 1 figure - 36. serial interface read timing with clke = 0 figure - 35. serial interface write timing msb lsb lsb cs sclk sdi t1 t2 t3 t4 t5 t6 t7 t7 control byte data byte 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 7 6 5 4 3 2 1 0 sdo cs sclk t4 t11 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 7 6 5 4 3 2 1 0 sdo cs sclk t4 t11 symbol parameter min typ max unit comments t1 sclk high time 25 ns t2 sclk low time 25 ns t3 active cs to sclk setup time 10 ns t4 last sclk hold time to inactive cs time 50 ns t5 cs idle time 50 ns t6 sdi to sclk setup time 5 ns t7 sclk to sdi hold time 5 ns t8 rise/fall time (any pin) 100 ns t9 sclk rise and fall time 50 ns t10 sclk to sdo valid delay time 100 ns t11 sclk falling edge to sdo tri-state hold time (clke = 0) cs rising edge to sdo tri-state hold time (clke = 1) 100 ns serial host interf ace timing characteristics
59 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit jitter tolerance performance e1 jitter t olerance performance g.823 IDT82V2048 1 10 100 1 10 3 1 10 4 1 10 5 0.1 1 10 100 1 10 3 18 ui @ 1.8 hz 1.5 ui @ 20 hz 1.5 ui @ 2.4 khz 0.2 ui @ 18 khz frequency (hz) jitter (ui) test condition: prbs 2^15-1; line code rule hdb3 is used. figure - 38. e1 jitter tolerance performance at&t62411 IDT82V2048 1 10 100 1 10 3 1 10 4 1 10 5 0.1 1 10 100 1 10 3 28 ui @ 4.9 hz 28 ui @ 300 hz 0.4 ui @ 10khz frequency (hz) jitter (ui) test condition: qrss; line code rule b8zs is used. figure - 39. t1 jitter tolerance performance t1 jitter t olerance performance
60 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit test condition: qrss; line code rule b8zs is used. figure - 41. t1 jitter transfer performance jitter transfer performance e1 jitter transfer performance test condition: prbs 2^15-1; line code rule hdb3 is used. figure - 40. e1 jitter transfer performance t1 jitter transfer performance g.736 1 10 100 1 10 3 1 10 4 1 10 5 -60 -40 -20 0 IDT82V2048 0.5 db @ 3 hz 0.5 db @ 40 hz -19.5 db @ 400 hz -19.5 db @ 20 khz f 3db = 6.5 hz f 3db = 1.7 hz frequency (hz) gain (db) 1 10 100 1 10 3 1 10 4 1 10 5 -60 -40 -20 0 at&t62411 gr-253-core tr-tsy-000009 IDT82V2048 0 db @ 1 hz -6 db @ 2 hz 0 db @ 20 hz 0.1 db @ 40 hz 0.5 db @ 350 hz -60 db @ 57 hz f 3db = 2.5 hz f 3db = 5 hz -33.3 db @ 1 khz -40 db @ 1.4 khz -40 db @ 70 khz -33.7 db @ 2.5 khz -49.2 db @ 15 khz frequency (hz) gain (db)
61 industrial temperature ranges IDT82V2048 octal t1/e1 short haul line interface unit corporate headquarters for sales: for tech support: 2975 stender way 800-345-7015 or 408-727-6116 408-330-1552 santa clara, ca 95054 fax: 408-492-8674 email: telecomhelp@idt.com www.idt.com* *to search for sales office near you, please click the sales button found on our home page or dial the 800# above and press 2. idt and the idt logo are trademarks of integrated device technology, inc. data sheet document h istory 11/4/2001 pgs. 2, 3, 11, 19 11/20/2001 pgs. 5, 6, 12, 14, 18, 19, 27, 30, 36, 44, 45, 46, 58 11/28/2001 pgs. 5, 27, 30, 37 11/29/2001 pgs. 5, 12 12/5/2001 pgs. 9 12/24/2001 pgs.44, 45 1/5/2002 pgs. 23, 36 1/24/2002 pgs. 2, 3, 10, 16, 45, 46 2/21/2002 pgs. 15,19, 47 3/25/2002 pgs. 1, 2, 60 4/17/2002 pgs. 20 5/7/2002 pgs. 15, 51, 52, 55 8/27/2002 pgs. 23, 37 1/15/2003 pgs. 1, 61 12/9/2003 pgs. 23 9/2/2004 pgs. 11, 15, 19, 45, 47, 48 idt xxxxxxx xx x device type blank process/ temperature range bb 82v2048 industrial (-40 c to +85 c) plastic ball grid array (pbga, bb160) t1/e1 short haul liu da thin quad flatpack (tqfp, da144) ordering information

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