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rev. 0.7 4/11 copyright ? 2011 by sili con laboratories SI2493/57/34/15/04-evb SI2493/57/34/15/04 global isomodem-evb evaluation board rev 5.0 for the SI2493/57/34/15/04 isomodem with uart and spi interfaces description the global SI2493/57/34/15/04-evb evaluation board rev 5.0 provides the system designer an easy way of evaluating the SI2493/57/34/15/04 isomodem ? . the SI2493/57/34 /15/04-evb consists of a motherboard with a power supply, an rs-232 and usb interface, other ease-of-use features, and a complete removable modem module on a daughter card. (a functional block diagram of the SI2493/ 57/34/15/04- evb is shown below.) the SI2493/57/34/15/04 isomodem is a complete controller-base d modem chipset with an integrated and programmable direct access arrangement (daa) that meets global telephone line requirements. available as a combination of one 16-pin small line-side device and one 24-pin or 16-pin system- side device, the si249 3/57/34/15/04 isomodem eliminates the need for a separate dsp data pump, modem controller, memories, codec, isolation transformer, relays, opto-isolators, and a 2- to 4-wire hybrid. the SI2493/57/34/15/04 is ideal for embedded modem applications due to its small board area, controller-based architecture, low power consumption, and global compliance. the SI2493/57/34/15/04-evb provides an rj-11 jack (for interfacing the SI2493/57/ 34/15/04-evb to the phone line), and usb and rs232 serial ports for interfacing to a pc or data terminal. this allows the isomodem to operate as a serial modem for straightforward evaluation of the SI2493/57/34/15/04. to evaluate the SI2493/57/34/15/04 isomodem in an embedded system, the daughter card can be used independently of or with the motherboard. a direct access header (j 103) is available on the motherboard to bypass the rs-232 transceivers and connect the SI2493/57/34/ 15/04 isomodem directly to a target system. an on-board rectifier, filter, and voltage regulator allow the power input to be 7.5?13 v ac or dc (either polarity) supplied through a screw terminal (j8) or a standard 2 mm power jack (j9). alternatively, power can be supplied through the usb interface (whether the usb or rs232 interface is used). the evaluation board can drive an external speaker for call monitoring or the speaker mounted directly on the board. please note that the pcm interf ace, parallel interf ace, and eeprom are available on the 24-pin ft only. see "1.7.evb part numbers" on page 8 for isomodem evb options. features the SI2493/57 /34/15/04-evb includ es the following: ? dual rj-11 connection to phone line ? rs-232 and usb interface to pc ? speaker for call monitoring ? direct access to SI2493/57/34/15/04 for embedded application evaluation ? easy power connection to common 7.5 v?13.5 v power supplies or usb port. ? 9 v ac adaptor ? simple installation and operation ? eeprom (24-pin ft only) ? rs232 lines status display on leds. functional block diagram SI2493/57/34/15/04 push button reset reset xtali xtalo si3018* interface circuit rj-11 phone line audio amplifier aout audio out direct access hdr daughter board boundary power-on reset rectifier filter rs-232 transceivers uart db9 interface selection jumpers voltage regulator 3.3 v 5 v 7.5-13.5 v dc or peak ac adaptor usb connector usb i/f *si3010 for si2404
SI2493/57/34/15/04 global isomodem-evb 2 rev. 0.7 1. SI2493/57/34/15/04-evb setup and evaluation this section explains how to set up the SI2493/57/34/ 15/04-evb for evaluation as an rs-232 or usb interface modem. jumper settings, power connection, pc/terminal connections, and terminal program configuration settings are given. the initial modem setup after power is applied as well as a basic tutorial on modem operation are provided. SI2493/57/34/15/04- evb configurations for eval uating addition al features are discussed separately. see the SI2493/57/34/15 or si2404 data sheets and ?an93: SI2493/57/34/15/04/04 modem designer?s guide? for complete details. 1.1. SI2493/57/34/ 15/04-evb quick start? rs-232 interface 1. set jumpers according to figure 1, but change j6 to the arrangement shown in figure 3 if an fs isomodem package is used. 2. connect: ?? db-9 to pc com 1 (with a pass-through cable). ?? rj-11 to phone line or co simulator. ?? 9 v ac adaptor (or usb cable). 3. bring up: ?? turn on power to modem. ?? autobaud automatically ad justs modem dte speed and protocol. 4. type ?at? followed by a carriage return. ?? should echo ?at? and then an ?ok?. 1.2. SI2493/57/34/ 15/04-evb quick start? usb interface 1. set jumpers according to figure 3, but change j6 to the arrangement shown in figure 3 if an fs isomodem package is used. 2. connect: ?? usb cable to pc ?? rj-11 to phone line or co simulator 3. download usb driver for your operating system from the cd supplied with the evaluation board. 4. install driver. 5. bring up. ?? reset the modem. ?? autobaud automatically ad justs modem dte speed and protocol. 6. type ?at? followed by a carriage return. ?? should echo ?at? and then an ?ok?. 1.3. motherboard and daughter card configuration the evb consist of a mother board that takes a plug in daughter card. the motherboard can be configured in a variety of ways that are explained below and are managed via jumpers. the daughter card contains both the modem system side and the isolated line interface (daa). the daughter card comes pr econfigured and functional although the user may decide to change some operating options such as the type of crystal used with the modem chip or the type of control signals used, i.e. uart vs parallel. these features must be managed by changing strapping resistors soldered down to the daughter card and by changing parts associated with the crystal. these possible changes are explained below. 1.3.1. motherboard configuration check all the jumper setting on the s2493/57/34/15/04- evb before applying power. the standard factory setting for the modem in a 24-pin ft package are shown in the figure below. this setup configures the modem for rs232 serial operation with autobaud enabled. any standard terminal program configured to communicate through a pc com port can be used to communicate with the evb. figure 1 shows the default motherboard setup for the ft package daughter card as well as the functions of connectors and jumpers.
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 3 rs232 com port link to host usb, virtual com port link to host (j11) insert jp33 & jp34 jumpers to enable eeprom insert jumper in jp34 to run at a fixed 19.2 kbaud rate. remove jp12 jumper to shut down audio power amp u27 call progress speaker, and its jumper jp14. rs232 vs usb select jumper, jp23, with rs232 select shown. (remove to disable both modes). ac/dc pwr inputs: j8 or j9. speaker output, jp11 rj11 tel. line connectors. tip and ring signals available at these test points. modem daughter cards mate with j101 & jp2. (daughter card versions prior to rev. 2.0 will not fit this motherboard.) tests points (+3.3v and isense) that allow modem current o tbe measured via the 1.0 ohm shunt: r59. system connector. allows all modem signals to be probed or routed elsewhere. leds and test points showing status of all control lines as well as tx/rx j6: jumpers for control line configuration. shown set up for a 24 pin modem on dc. eeprom (u5) reset pushbutton audio power amp (u27) figure 1. default motherboard setup
SI2493/57/34/15/04 global isomodem-evb 4 rev. 0.7 1.3.1.1. rs232 vs usb vs user provided io selection to change to usb operation simply move the rs232 selection jumper on jp23 to the usb position as marked on the pcb and shown in figure 1. when the usb vs uart settings are changed the appropriate indicator led will light up on the evb. if neither jumper is in plac e then neither serial port will be activated and the user must provide i/o signals via the pins on j103. this io can be in asynch serial, spi serial and parallel bus mode. 1.3.1.2. autobaud control autobaud is enabled with no jumper at the jp34 position. when a jumper is in place, autobaud is disabled and the user must setup the host to run 19k2 baud in order to use the modem. 1.3.1.3. eepr om control to enable the eeprom (u5) both jumper s jp34 and jp35 must be in place and the modem reset. jp35 physically connects the eeprom chips select line to the modem and allows the eeprom to function when addressed by the modem, while jp34 connects a strapping option to the correct modem pin which is sensed during reset and instructs the modem firmware to use the eeprom. 1.3.1.4. call progress configuration the modem call establishment can be heard by enabling the call progress feature via software (see an93) and hardware. the hardware components include installing jp12 wh ich enabled the audio power amplifier and installing jp14 to connect the on board speaker to the power amplifier output. if an offboard speaker is to be used then jp14 can be removed and the alternate speaker can be connected to pins 1 and 4 of jp11. note the this audio output is 8 ? and differential so that neither output pin should be grounded. 1.3.1.5. control line configuration various modem control lines can be rearranged depending on the user preferences and the specific modem chips used. this is done using jp6. the basic two jp6 configurations are shown in the following figures. figure 2. default j6 setup for 24-pin modem chips figure 3. default j6 setup for 16-pin modem chips the specific details of wh at the jumpers connect are shown in table 1, which is also found printed on the underside of the evb. j6 1 4 7 10 13 3 6 9 12 15 j6 1 4 7 10 13 3 6 9 12 15 table 1. routing of control signals with jumper position on j6 rs232 signal si24xx 24-pin si24xx 16-pin si2401 left right left right left right dcd dcd sdi/eesd dcd nc dcd nc ri ri fsynch nc ri nc ri dtr esc ri esc nc esc nc rts rts sdo/ eeclk nc rts nc gpio1 dsr int aout/int nc int nc aout/int
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 5 1.3.2. daughter card configuration the daughter card comes configured with either a 24- pin ft or 16-pin fs system side part and either 32 khz or 4.9152 mhz operation, and uart operation. the daughter card can also be setup to operate with a third clock frequency, an on board 27 mhz oscillator. to change between these options requires component changes on the daughter card. the daughter card can also operate in three possible interface modes: parallel bus mode, in spi mode as well as the default uart mode. there are six small (0402) strapping resistors (r101 to r106) that are on the daughter card and are configured differently depending on the combination of chip package, clock frequency chosen, and interface mode. see figures 5 and 6 for details. the card and its options are shown in figure 4, which shows the modem daughter card rev 2.0 top and bottom views with the critical parts that may be changed to select another command mode (i.e. spi) or an alternate crystal frequency, such as 4.9152 mhz.
SI2493/57/34/15/04 global isomodem-evb 6 rev. 0.7 figure 4. modem daughter card rev 2.0 top and bottom views figure 5. r101?r106 setup for clock and mode configuration on the dc with the 16-pin fs package these option strapping resistors select modem command mode uart, spi or parallel and crystal clock frequency. three possible crystals or ext oscillator. crystal loading caps (c40 & c41) specific to the crystal type used. top view bottom view ?
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 7 figure 6. r106 setup for clock and mode configuration on dc with 24-pin ft package 1.3.2.1. 32 khz setup for 32 khz, populate y1 with the 32 khz crystal shown in the bom and use 18 pf capacitors for the c40/c41 values. also remove y3 and y1b if present and strap r101 to r106 as shown in figure 5. the modem should then work as expected; no changes are needed on the motherboard 1.3.2.2. 4.9152 mhz for 4.9152 mhz, populate y1b with the 4.9152 mhz crystal shown in the bom and use 33 pf capacitors for the c40 and c41 values. also remove y3 and y1 if present and strap r101 to r106 as shown in figures 5 or 6 above.the modem should then work as expected; no changes are needed on the motherboard 1.3.2.3. 27 mhz for 27 mhz, populate y3 with the small surface mount oscillator shown in the bom and remove y3 and y1b if present. also remove any capacitors at the c40 and c41 positions. strap r101 to r106 as shown in figures 5 or 6 above. the modem should then work as expected; no changes are needed on the motherboard 1.3.2.4. spi mode setup to change to spi mode setup it is necessary to configure the r101 straps as shown in figure 5 or figure 6, according to the package and clock used. then setup the daughter card with neither uart nor usb operation selected, i.e. with no jumper on jp23. the spi signals can then be obtained on j103, the system connector and connected to the host. signal usage is described in table 2. 1.3.3. parallel bus mode setup to change to parallel bus mo de setup it is necessary to configure the r101 straps as shown in figure 5 or figure 6, according to the package and clock used. then setup the daughter card with neither uart nor usb operation selected, i.e. with no jumper on jp23. the spi signals can then be obtained on j103, the system connector and connected to the host. see the data sheet and schematic for signal and pin usage. 1.4. power requirements the SI2493/57 /34/15/04-evb has an on-board diode bridge, filter capacitor, and voltage regulator (u10 and u18). power can be supplied from any source capable of providing 7.5 v?13 v dc or 7.5 v?13 v peak ac and at least 100 ma. (additional current may be required if a speaker is connected for monitoring call progress tones.) power may be applied to the SI2493/57/34/15/ 04-evb through the screw terminals (j8), the 2 mm power jack (j9), or the usb cable (even if the modem is configured for rs-232 operation). the onboard full- wave rectifier and filter en sure the correct polarity is applied to the si 2493/57/34/1 5/04-evb. da ughter card current can be measured by connecting a dvm across r59, a 1 ? resistor using the supplied test points on table 2. signal usage spi function jp23 pin number legacy pin function spi_csb 5 rtsb spi_miso 7 rxd spi_mosi 9 txd spi_sclk 11 ctsb
SI2493/57/34/15/04 global isomodem-evb 8 rev. 0.7 either side. 1.5. terminal an d line connections the SI2493/57/34/15/04 can be tested as a standard serial data modem by conne cting the SI2493/57/34/15/ 04-evb to a personal computer or other data terminal equipment (dte), phone line, and power. connect a pc serial port to the db9 co nnector on the SI2493/57/34/ 15/04-evb with a pass-thr ough cable. the rs-232 transceivers on the evb can co mmunicate with the dte at rates up to 1 mbps. any standard terminal program, such as hyperterminal or procomm, running on a pc communicates with the SI2493/57/ 34/15/04-evb. the standard factory jumper configuration has autobaud enabled. autobaud detects the dte speed, data length, parity, and number of stop bits. if jp33 is installed, autobaud is disabled. configure the terminal emulation program to 19200 bps, eight data bits, no parity, one stop bit, and hardware (cts) handshaking. connect the rj -11 jack on the SI2493/57/ 34/15/04-evb to an analog ph one line or te lephone line simulator, such as a teltone tls 5. 1.6. making connections with the terminal program properly configured and running, apply power to the SI2493/57/34/15/04-evb. type ?at?, and the modem should return ?ok? indicating the modem is working in the command mode and communicating with the terminal. if the ?ok? response is not received, try resetting the modem by pressing the manual reset switch (s1); then, again type ?at.? next, type ?ati 6.? the modem should respond with ?2493?, ?2457?, ?2434?, ?2415?, or ?2404? indicating the terminal is communicating with an SI2493, si2457, si2434, si2415, or si2404. type ?ats0=2? to configure the modem to answer on the second ring. to take the modem off-hook, type ?ath1.? the modem should go to the off-hook state, draw loop current, and respond with an ?ok.? next, type ?ath? or ?ath0?, and the modem should hang up (go on-hook) and stop drawing loop current. to make a modem connection, type ?atdt(called modem phone number).? once the connection is established, a ?connect? message appears indicating the two modems are in the data mode and communicating. typing on one terminal should appear on the other terminal. to return to the command mode without interrupting the connection between the two modems, type ?+++.? approximately two seconds later, ?ok? appears. the modem is now in command mode and accepts ?at? commands.type ?ath? (or ?ath0?) to terminate the data connection , or type ?ato? to return to the data mode. after the ato command, the modem resumes the data connection and no longer accepts at commands. 1.7. evb part numbers the isomodem evaluation boards are offered in multiple speeds and packaging options. the first four numbers indicate the system-side device. the next two letters indicate the system-side package (fs?lead-free, 16-pin soic; ft?lead-free, 24-pin tssop). the final two numbers indicate the line-side device. see figure 7. figure 7. evb part number example 2. SI2493/57/34/15/04-evb functional description the SI2493/57/ 34/15/04-evb is a multipurpose evaluation system. the modem daughter card illustrates the small size an d few components required to implement an entire controller-based modem with global compatibility. the daughter card can be used independently of, or in conjunction with, the motherboard. the motherboard adds features that enhance the ease of evaluati ng the many capabilities of the SI2493/57/34/15/04 isomodem ? . 2.1. motherboard the motherboard provides a convenient interface to the SI2493/57/34/15/04 dc (daughter card). the versatile power supply allows for a wide range of ac and dc voltages to power the board. rs-232 transceivers and a db9 connector allow the SI2493/57/34/15/04-evb to be easily connected to a pc or other terminal device. jumper options allow direct access to the lvcmos/ttl level serial inputs to the SI2493/57/34/15/04, bypassing the rs-232 transceivers or usb interface. this is particularly useful for dire ctly connecting the SI2493/57/ 34/15/04 to embedded systems. the si24xxurt-evb motherboard connects to the daughter card through two connectors, jp101 and jp2. jp101 is an 8x2 header providing connection to all SI2493/57/34/15/04 digital signals and regulated 3.3 v power for the SI2493/57/34/15/04. the SI2493/57/34/ 15/04 digital signals appearing at jp101 (daughter card interface) are lvcmos and ttl compatible. jp2 is a 4x1 socket providing connec tion between the daughter si2457-d-fs18-evb ls part number (si30xx) ss package ss part number ss revision
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 9 card and the rj-11 phone jack. 2.1.1. voltage regulator/power supply the input voltage to either j8 or j9 must be between 7.5 and 13.5 v dc or 7.5 and 13.5 v peak ac. the motherboard includes a diode bridge (d12) to guard against a polarity reversal of the dc voltage or to rectify an ac voltage. the power source must be capable of continuously supplying at least 100 ma. c44 serves as a filter cap for an ac input. the voltage regulator, u10, provides 5 v for the motherboard and the input for voltage regulator u3, which outputs 3.3 v for use on the motherboard and to power the daughter card. si24xxdc power consumption can be measured by placing a meter across r59. power is supplied to u2 through d5 from the usb. 2.1.2. reset circuitry the SI2493/57/34/15/04 requires a reset pulse to remain low for at least 5. 0 ms after the power supply has stabilized during the po werup sequence or for at least 5.0 ms during a power-on reset. most production SI2493/57/34/15/04 modem ch ipset applications require that reset be controlled by the host processor. certain SI2493/57/34/15/04 opera tion modes, including powerdown, require a hardware reset to recover. the SI2493/57 /34/15/04-evb contains two reset options, an automatic power-on reset device, u18 (ds1818) (default), and a manual reset switch (s1) to permit resetting the chip without removing power. a reset, regardless of the mechanism, causes all modem settings to revert to factory default values. 2.1.3. automatic reset (ds1818) the ds1818 is a small, low-cost device that monitors the voltage on v d and an external reset pushbutton. if v d drops below 3.0 v, the ds1818 provides a 220 ms active-low reset pulse. on powerup, the ds1818 also outputs an active low reset pulse for 220 ms after v d reaches 90% of the nominal 3.3 v value. the ds1818 outputs a 220 ms reset pulse any time the power supply voltage exceeds the 3.3 v 10% window. 2.1.4. manual reset the manual reset switch (s1) performs a power-on reset. this resets the SI2493/57/34/15/04 to factory defaults without turning off power. pressing s1 activates the reset monitor in the ds1818 and produces a 220 ms active low reset pulse. 2.1.5. eeprom enable (ft only) connecting jp34 and jp35 enables the optional eeprom, u5. see ?an93: si2457/si2434/si2415/ si2404 modem designer?s guide? for programming details. 2.1.6. interface selection the serial interface of th e SI2493/57/34 /15/04-evb can be connected to a comp uter, terminal, embedded system, or any other data terminal equipment (dte) via a standard rs-232 interface, usb interface, or through a direct ttl serial interface. the SI2493/57/34/15/04 can be tested as a standard data modem by connecting the SI2493/57/34/15/04- evb to a personal computer or other dte power supply and a phone line. a pc can communicate with the SI2493/57/34/15/04-evb us ing a standard terminal program, such as hyperterm or procomm. jumper settings determine how the SI2493/57/34/15/ 04-evb is connected to the dte. 2.1.7. rs-232 interface this operation mode uses the standard factory jumper settings illustrated in figure 1 on page 3 . the maxim max3237 transceiver interfaces directly with the ttl levels available at the serial interface of the SI2493/57/ 34/15/04 and, using internal charge pumps, makes these signals compatible with the rs-232 standard. the rs-232 transceiver on the SI2493/57/34/1 5/04-evb can communicate at rates between 300 bps and 1 mbps. this simplifies the connection to pcs and other data terminal equipment (dte). the signals available on the SI2493/57/34/15/04-evb serial interface (db9 connector) are listed in table 3. 2.1.8. usb interface the usb cable connects to j10 on the motherboard and provides both data and power. installing a jumper on jp23 enables the usb interface and disables the rs-232 interface. the usb interface is provided by u12. a usb driver for this ch ip is available for most pc and mac operating systems on the cd.
SI2493/57/34/15/04 global isomodem-evb 10 rev. 0.7 2.1.9. direct access interface while the motherboard supplies power through j8, j9, or usb, power-on reset, and an rj?11 jack for the modem, the direct access in terface (j103) is used to connect the motherboard to an embedded system. j103 provides access to all SI2493/57/34/15/04 signals available on the daughter card. it is necessary to remove the jumper on jp23 to disable both the rs-232 and usb interface and prevent signal contention. 2.1.10. pcm interface (24-pin ft only) the SI2493/57/34/15/04 pcm interface can be demonstrated using the voice motherboard, not with this evb. 2.1.11. aout call progress audio output call progress audio output is provided by the SI2493/57/ 34/15/04 on the aout pin as a pwm signal. this signal allows the user to monitor call progress signals, such as dial tone, dtmf dialing, ri ng, busy signals, and modem negotiation. control of this signal is provided by at commands and register settings described in the introduction. the aout signal is connected to an on board amplifier, for a high-quality output. aout can also be connected to a summing amplifier or multiplexer in an embedded application as part of an integrated audio system. 2.1.11.1. aout audio processing the aout signal discussed in this section leaves the SI2493/57/34/15/04 is processed (demodulated) by a high pass filter: (r133,13 4,135, and c24, c25, 26, c27). it is critically importan t to not put a dc load on the aout pin since the pin also acts as a modem feature control on reset and is inte rnally weakly pulled up. any unintentional dc load on aout prevents proper operation of the modem. see ?an93: si3457/34/15/04 modem designer?s guide? for more details on the features controlled by pin strapping. since this pwm signal swings rail to rail and is simply filtered by a low pass filter to acquire the audio. it is important to keep the power supply to the modem free of noise in the audio spectrum. 2.1.11.2. the audio output amplifier (lm4819) the power amplifier on the evb is powered by a current limited 4.2 v supply. the cu rrent limit is implemented in the evb because it is intended for hw/sw development and is not needed for a production design. this amplifier can drive an 8 ? speaker with 200 mw of call progress audio (i.e., isomodem's call progress dialing and negotiation tones). the power amplifier itself is a low cost, rugged h bridge type device. there are several pin compatible designs from multiple vendors that can provide alternate price/ power tradeoffs for this amplifier. this power amp can be shut down by removing jumper jp12. the signal at jp12 can also be tied to a control signal to allow the host to shut down the amplifier. the customer can change the values of r172 and r173 when integrating the evb to his system, but should keep the rc formed by c37 and r173 at a 50 hz or higher corner to avoid a power-on thump. 2.1.11.3. the call progress speaker the call progress speake r, regal re-2308-nl is connected to the amplifier via a jumper, jp14. if another speaker is to be connected then it is necessary to remove jp14 and connect the external speaker to jp11, pins 1 and 4. it is important to remember that the speaker signal is differential. both the output pins are driven outputs and must not be grounded. table 3. db9 pin connections j1 name j1 symbol j1 pin SI2493/57/34/15/ 04 pin SI2493/57/34/15/ 04 name carrier detect cd 1 * see note dcd /eesd received data rxd 2 9 rxd transmit data txd 3 10 txd data terminal ready dtr 4* see note esc/ri signal ground sg 5 6 gnd data set ready dsr 6* see note int /aout ready to send rts 7* see note rts /rxclk clear to send cts 8 11 cts ring indicator rd 9 * 17 ri *note: jp6 jumper option.
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 11 2.2. modem daughter card operation the SI2493/57/34/15/04urt-evb daughter card is a complete modem solution perfectly suited for use in an embedded system. the daughtercard contains both the modem system-side chip and the isolated line interface (daa). the daughter card requires a 3.3 v supply capable of providing at least 35 ma and communicates with the system via lvcmos/ttl-compatible digital signals on jp1. the rj-11 jack (tip and ring) is connected via jp2. be sure to provide the proper power-on reset pulse to the daughter card if it is used in the stand-alone mode. 2.2.1. reset requirements the SI2493/57/34/15/04 isomodem ? daughter card must be properly reset at powerup. the reset pin (pin 8) of the SI2493/57/34/15/04 (j p103, j101 pin 13) must be held low for at least 5.0 ms after power is applied and stabilized to ensure the device is properly reset. 2.2.2. crystal requirements clock accuracy and stability are important in modem applications. to ensure reliable communication between modems, the clock must remain within 100 ppm of the design value over the life of the modem. the crystal selected for use in a modem application must have a frequency tolerance of less than 100 ppm for the combination of initial frequency tolerance, drift over the normal operating temperature range, and five year aging. other considerations, such as production variations in pc board capacitance and the tolerance of loading capacitors, must also be taken into account. 2.2.3. protection the SI2493/57/3 4/15/04-evb meets or exceeds all fcc and international ptt requirements and recommendations for high-voltage surge and isolation testing without any modificati on. the protection/isolation circuitry includes c1, c2, c8, c9, fb1, fb2, and rv1. the pcb layout is also a key ?component? in the protection circuitry. the SI2493/57/34/15/04-evb provides isolation to 3 kv. contact silicon laboratories for information about designing to higher levels of isolation.
SI2493/57/34/15/04 global isomodem-evb 12 rev. 0.7 3. design the following sections contain the schem atics, bill of materials, and layout for the SI2493/57/34/ 15/04 including the daughter card and motherboard. these components are for internal silabs use only.
no r103 r106 r101 no no no no no no yes no no no yes pkg_16.11 & pkg_24.15 pkg_16.3 & pkg_24.4 pkg_16.15 & pkg_24.23 pkg_16.7 & pkg_24.11 pkg_24.16 r102 no no yes yes yes no yes x x no no yes spi 32 khz spi 27 mhz spi 4.9252 mhz pin11 pin3 pin15 pin7 pin15 pin23 pin11 r104 r106 r101 r102 no yes x x no yes no yes no yes pin16 16 pin sys side strapping table uart 4.9152 mhz uart 27 mhz uart 32 khz parallel pkg_24.17 r105 pin17 x x x x parallel 27 mhz 4.9152 mhz spi spi spi no yes no yes no no yes 27 mhz yes x 4.9152 mhz 32.768 khz no no no no uart no yes 32.768 khz x no no uart no no no no no uart no no yes 4.9152 mhz 27 mhz 24 pin system side strapping table ! "#$%& %# $#

'( ) ( * ctsb aout_intb intb rib dcdb ctsb aout_intb fsynch(ri) dcdb sdo_eeclk_rtsb dcdb esc aout_intb rxd resetb xtali xtalo rxd rtsb resetb dcdb fsynch rtsb intb esc rib sdi_eesd aout_intb clkout_eecsb_ao clkout_eecsb_ao txd ctsb txd ctsb fsynch sdo_eeclk_rtsb sdo_eeclk_rtsb sdi_eesd rib aout_intb fsynch intb esc dcdb rib sdi_eesd vda xtalo xtali xtalo aout_intb ctsb dcdb fsynch intb rib vda vdb rxd txd ctsb xtali resetb c1a c2a c1a c2a vdd vdd vdd vdd r101 10k r101 10k c41 33pf c41 33pf r121 ni r121 ni r18 1.2k r18 1.2k r111 200 r111 200 r120 ni r120 ni fb5 fb5 c51 0.22uf c51 0.22uf r104 10k r104 10k r102 10k r102 10k c56 0.1uf c56 0.1uf r103 10k r103 10k c52 0.1uf c52 0.1uf r105 10k r105 10k r112 200 r112 200 u13 si24xx-16 pin u13 si24xx-16 pin clkin/xtali 1 xtalo 2 rib 3 vdd3.3 4 rxd_spi_miso 5 txd_spi_mosi 6 ctsb_spi_sclk 7 reset 8 c2a 9 c1a 10 intb 11 gnd 12 va 13 esc 14 dcdb 15 rtsb_spi_csb 16 j1 socket 8x2 j1 socket 8x2 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 13 13 15 15 12 12 14 14 16 16 c53 0.22uf c53 0.22uf c40 33pf c40 33pf c55 0.1uf c55 0.1uf c54 1uf c54 1uf y3 27 mhz y3 27 mhz gnd 2 vcc 4 out 3 nc 1 c50 0.1uf c50 0.1uf r106 10k r106 10k r110 200 r110 200 y1b 32.768khz y1b 32.768khz u12 SI2493 u12 SI2493 clkin/xtali 1 xtalo 2 clkout/eecsb/a0 3 fsynch/d6 4 vd3.3 5 gnd 6 vda 7 rtsb/spi_csb/d7 8 vdb 19 gnd 20 vd 3.3 21 c2a 13 c1a 14 esc/d3 22 dcdb/d4 23 sdo/eeclk/d5 24 cts/spi_sclk/csb 11 rxd/spi_miso/rdb 9 txd/spi_mosi/wrb 10 reset 12 rib/d1 17 sdi/eesd/d2 18 aout/intb 15 intb/d0 16 y1 4.9152mhz y1 4.9152mhz figure 8. i2493/57/34/15/04 schematic
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 13 bias ring detect/cid/voltage monitoring dc term add 0.020 to 0.030 sq. inches of cu at all transistor collectors place c3 near d1 no gnd or i_gnd copper planes in daa section. tip ring keep 5 mm creepage rules between this daa section and all else. c1a c2a i_gnd i_gnd i_gnd i_gnd r12 56.2 r12 56.2 c10 0.01uf c10 0.01uf q5 mmbta06lt1 q5 mmbta06lt1 q3 mmbta42lt1 q3 mmbta42lt1 c4x 1uf 25v x8r c4x 1uf 25v x8r rv1 p3100sb rv1 p3100sb q1 mmbta42lt1 q1 mmbta42lt1 fb1 600 ohm fb1 600 ohm r2 150 r2 150 r4 2.49k r4 2.49k c5 0.1uf c0603 c5 0.1uf c0603 c6 0.1uf c0603 c6 0.1uf c0603 c2 33pf c2 33pf c8 680pf c8 680pf - + d1 hd04 - + d1 hd04 q2 mmbta92lt1 q2 mmbta92lt1 c9 680pf c9 680pf r6 100k r6 100k fb2 600 ohm fb2 600 ohm r11 73.2 r11 73.2 c1 33pf c1 33pf r13 56.2 r13 56.2 c7 2.7nf c7 2.7nf + c4 1uf + c4 1uf r15 0 r15 0 z1 43v z1 43v r7 20m r7 20m j2 tsm-104-01-t-sv 4x1 header j2 tsm-104-01-t-sv 4x1 header q4 mmbta06lt1 q4 mmbta06lt1 r8 20m r8 20m r3 3.65k r3 3.65k c3 0.01uf c3 0.01uf r9 1m r9 1m r5 100k r5 100k r1 1.07k r1 1.07k r16 0 r16 0 u2 si3018 u2 si3018 qe 1 dct 2 rx 3 ib 4 c1b 5 c2b 6 vreg 7 rng1 8 dct2 16 ignd 15 dct3 14 qb 13 qe2 12 sc 11 vreg2 10 rng2 9 r10 536 r10 536 figure 9. si3018/10 daa schematic
SI2493/57/34/15/04 global isomodem-evb 14 rev. 0.7 4. bill of materials: si24xx daughter card table 4. si24xx daughter card bill of materials item qty ref value rating voltage tol type pcb footprint mfr part number mfr 1 2 c1, c2 33 pf y2 250 v 10% y2 c1808 scc1808x330k502t holy stone 2 1 c3 0.01 f 250 v 10% x7r c0805 grm21br72e103kw03l murata 3 1 c4 1 f 50 v 20% alum_elec c3.3x3.3mm eee1hs010sr panasonic 4 2 c5, c6 0.1 f 16 v 20% x7r c0603 c0603x7r160-104m venkel 5 1 c7 2.7 nf 50 v 20% x7r c0603 c0603x7r500-272m venkel 6 2 c8, c9 680 pf y2 250 v 10% y2 c1808 scc1808x681k502t holy stone 7 1 c10 0.01 f 16 v 20% x7r c0603 c0603x7r160-103m venkel 8 2 c40, c41 18 pf 50 v 5% cog c0603 c0603cog500-180j venkel 9 3 c50, c52, c56 0.1 f 10 v 20% x7r c0603 c0603x7r100-104m venkel 10 2 c51, c53 0.22 f 6.3 v 10% x5r c0603 c0603x7r6r3-224k venkel 11 1 c54 1 f 25 v 10% x5r c0603 c0603x5r250-105k venkel 12 1 d1 hd04 0.8 a 400 v bridge minidip4 hd04-t diodes inc. 13 3 fb1, fb2, fb5 600 ? 200 ma smt l0603 blm18ag601sn1 murata 14 1 j1 socket 8x2 socket socketx8-100-smt ssw-108-22-g-d-vs samtec 15 1 j2 4x1 header_0 conn1x4-100-smt tsm-104-01-t-sv berg 16 2 q1 q3 mmbta42lt1 200 ma 300 v npn sot23-bec mmbta42lt1 on semi 17 1 q2 mmbta92lt1 100 ma 300 v pnp sot23-bec mmbta92lt1 on semi 18 2 q4 q5 mmbta06lt1 500 ma 80 v npn sot23-bec mmbta06lt1 on semi 19 1 rv1 p3100sb 275 v sidactor do-214aa-np p3100sbl littelfuse 20 1 r1 1.07 k ? 1/2 w 1% thickfilm r2010 cr2010-2w-1071f venkel 21 1 r2 150 ? 1/16 w 5% thickfilm r0603 cr0603-16w-151j venkel 22 1 r3 3.65 k ? 1/2 w 1% thickfilm r2010 cr2010-2w-3651f venkel 23 1 r4 2.49 k ? 1/2 w 1% thickfilm r2010 cr2010-2w-2491f venkel 24 2 r5, r6 100 k ? 1/16 w 5% thickfilm r0603 cr0603-16w-104j venkel 25 2 r7, r8 20 m ? 1/8 w 5% thickfilm r0805 cr0805-8w-206j venkel 26 1 r9 1 m ? 1/16 w 1% thickfilm r0603 cr0603-16w-1004f venkel 27 1 r10 536 ? 1/4 w 1% thickfilm r1206 cr1206-4w-5360f venkel 28 1 r11 73.2 ? 1/2 w 1% thickfilm r2010 cr2010-2w-73r2f venkel 29 2 r12, r13 56.2 ? 1/16 w 1% thickfilm r0603 cr0603-16w-56r2f venkel 30 2 r15, r16 0 ? 1 a thickfilm r0603 cr0603-16w-000 venkel 31 2 r120, r121 0 ? 1 a thickfilm r0603 cr0603-16w-000 venkel 32 1 r18 1.2 k ? 1/10 w 5% thickfilm r0603 cr0603-10w-121j venkel 33 4 r101, r102, r103, r104, r106 10 k ? 1/10 w 5% thickfilm r0603 cr0603-10w-103j venkel
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 15 34 1 r105 1 k ? 1/10 w 5% thickfilm r0603 cr0603-10w-102j venkel 35 3 r110, r111, r112 200 ? 1/10 w 5% thickfilm r0603 cr0603-10w-2000j venkel 36 1 u2 si3018 300 v lineside so16n6.0p1.27 si3018-f-gs silabs 37 1 u12 si24xx isomodem tssop24n6.4p0.65 SI2493-e-ft silabs 38 1 u13 si24xx-16 pin 16pin soic 2493 silicon laboratories 39 1 y1b (y1, y3) 32.768 khz xtal-3x8-ld ecs?.327?12.5?8x ecs international 40 1 z1 43 v 500 mw 43 v zener sod-123 bzt52c43-7-f diodes inc. table 4. si24xx daughter card bill of materials (continued) item qty ref value rating voltage tol type pcb footprint mfr part number mfr
SI2493/57/34/15/04 global isomodem-evb 16 rev. 0.7 "rs232" connectors for isomodem module. txd gpio3 rxd nc cts nc resetb gnd nc vd gpio4 gpio5 nc nc si2401 gpio2 gpio1 txd/wr esc/d3 rxd/rd sdi/eesd/d2 ctsb/cs rib/d1 resetb gnd intb/d0 vd aout/intb fsynch/d6 rtsb/d7 clkout/eecs/a0 si24xx dcdb/d4 sdo/eeclk_rtsb/d5 15 16 13 14 11 12 9 10 7 8 6 1 3 4 5 net names correspond to si24xx. see table for si2401 equivalents 2 jp1/3 "usb" rxd txd ctsb cd rib rtsb dtrb "fsynchb" "sdo_eeclk_rtsb" "sdi_eesd" dsrb "soic16: 1-2, 5-6, 7-8, 11-12, 14-15" "tssop24: 1-2, 4-5, 7-8, 10-11, 13-14" "recommended j6 settings" "rxd" "txd" "ctsb" "resetb" "rtsb" "dcdb" "int" "aout_intb" "rib" "esc" "clkout_eecsb" tssop24 soic16 soic16 24xx 24xx 2401 sdi/eesd nc nc fsynch rib rib rib nc nc sdo/eeclk rtsb gpio1 aout/intb intb intb/aout tssop24 24xx soic16 24xx soic16 2401 dcd dcd dcd nc nc rib esc esc esc nc nc intb nc nc rtsb silk screen text "gnd" "+3.3v" jp6 left pin signals jp6 right pin signals leaded select high chooses b2 port to ho s t interface page to aout circuit on call progress page nc or intb nc or intb/aout table on back silkscreen for jp6 rs-232 si24xx 16 pin si2401 cd dcd or nc dcd or nc ri nc or rib nc or rib dtr esc or nc esc or nc rts nc or rtsb nc or gpio1 dsr si24xx 24 pin intb or aout/intb dcd or sdi/eesd ri or fsynch esc or rib rts or sdo/eeclk left left left right right right "j6 jumper connectiveity" silabs internal use only spi_csb spi mode clkout_eecsb fsynchb sdi_eesd clkout_eecsb ctsb resetb rxd dcdb esc rts_m cd_m dtr_m dsr_m aout_intb vcc_modem dcdb rib fsynchb ri_m rtsb txd int b sdi_eesd esc sdi_eesd fsynchb rib rib sdo_eeclk_rtsb sdo_eeclk_rtsb sdi_eesd esc rtsb dcdb rib int b ctsb int b txd aout _int b rxd clkout_eecsb fsynchb rxd txd resetb ctsb rtsb select sdo_eeclk_rtsb sdi_eesd cd_m ri_m dtr_m rts_m dsr_m sdo_eeclk_rtsb aout _int b fsynchb clkout_eecsb sdi_eesd enable_muxb fsynchb clkout_eecsb txd_t rts_t dtr_t txd_u rts_u dtr_u rxd_t cts_t dsr_t cd_t ri_t rxd_u cts_u dsr_u cd_u ri_u resetb aout_intb +3.3v +3.3v +3.3v +3.3v +3.3v +3.3v +3.3v +3.3v +3.3v +3.3v +3.3v +3.3v c98 0.1uf c98 0.1uf d44 cd d44 cd fb11 fb11 r159 681 r159 681 j103 8x2 shrouded header j103 8x2 shrouded header 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 13 13 15 15 12 12 14 14 16 16 tp7 turret gnd tp7 turret gnd d48 red dsr d48 red dsr tp19 tp19 c72 0.1uf c72 0.1uf d45 ri d45 ri r160 681 r160 681 jp35 ee en. jp35 ee en. 1 2 c69 1uf c69 1uf tp20 tp20 tp13 isense red tp13 isense red r169 681 r169 681 jp2 4x1 socket jp2 4x1 socket r59 1.0 r59 1.0 d46 dtr d46 dtr j6 header 5x3 j6 header 5x3 1 2 3 4 5 6 7 8 9 10 11 13 15 12 14 r170 681 r170 681 c70 560pf c70 560pf r40 10k r40 10k jp33 autobaud dis. strap jp33 autobaud dis. strap 1 2 tp21 tp21 jp23 jp23 j101 header 8x2 j101 header 8x2 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 13 13 15 15 12 12 14 14 16 16 d41 rxd d41 rxd r43 10k r43 10k u26 74lcx541 u26 74lcx541 a1 2 a2 3 a3 4 a4 5 a5 6 a6 7 a7 8 a8 9 g1 1 g2 19 y1 18 y2 17 y3 16 y4 15 y5 14 y6 13 y7 12 y8 11 vcc 20 gnd 10 c73 560pf c73 560pf r101 200 r101 200 d54 bav23a d54 bav23a r39 10k nopop r39 10k nopop r48 10k r48 10k j5b rj-11 j5b rj-11 7 8 9 10 11 12 r52 10k r52 10k tp22 tp22 r162 681 r162 681 tp16 tp16 tp12 +3.3v red tp12 +3.3v red d42 txd d42 txd r155 681 r155 681 r163 681 r163 681 tp5 ring blue tp5 ring blue tp8 turret gnd tp8 turret gnd c71 0.1uf c71 0.1uf j5a rj-11 pstn line telephone j5a rj-11 pstn line telephone 1 2 3 4 5 6 j7 nopop j7 nopop 1 1 2 2 3 3 4 4 5 5 tp23 tp23 r156 681 r156 681 u13 idt74cbtlv3257 u13 idt74cbtlv3257 gnd 8 vcc 16 1b1 2 2b1 5 3b1 11 4b1 14 1a 4 2a 7 3a 9 4a 12 1b2 3 2b2 6 3b2 10 4b2 13 oe 15 s 1 tp6 tip blue tp6 tip blue tp9 turret gnd tp9 turret gnd u5 eeprom 32k u5 eeprom 32k /cs 1 miso 2 mosi 5 sclk 6 /wp 3 gnd 4 /hold 7 vcc 8 d47 rts d47 rts d43 cts d43 cts r41 10k r41 10k r157 681 r157 681 d52 red usb d52 red usb u14 idt74cbtlv3257 u14 idt74cbtlv3257 gnd 8 vcc 16 1b1 2 2b1 5 3b1 11 4b1 14 1a 4 2a 7 3a 9 4a 12 1b2 3 2b2 6 3b2 10 4b2 13 oe 15 s 1 jp34 ee strap jp34 ee strap 1 2 c74 1uf c74 1uf tp25 turret gnd tp25 turret gnd tp17 tp17 r42 10k r42 10k tp24 tp24 r158 681 r158 681 c75 0.1uf c75 0.1uf d53 red rs232 d53 red rs232 figure 10. motherboard modem interface schematic
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 17 "do not gound speaker+ or speaker - aout_intb +4.7v +4.7v jp14 en. lcl. speaker jp14 en. lcl. speaker 1 2 r31 10k r31 10k u27 lm4819 u27 lm4819 shutdown 1 bypass 2 in+ 3 in- 4 vo2 8 gnd 7 vdd 6 vo1 5 r33 1k r33 1k r172 20.0k r172 20.0k jp12 pwr amp en. jp12 pwr amp en. 1 2 c37 1uf c37 1uf c27 0.1uf c27 0.1uf c23 1uf c23 1uf r35 1k r35 1k c24 0.1uf c24 0.1uf r175 0 r175 0 ls1 speaker ls1 speaker c26 0.1uf c26 0.1uf c25 0.1uf c25 0.1uf c21 1uf c21 1uf jp11 diff spkr out jp11 diff spkr out r174 20.0k r174 20.0k r34 1k r34 1k c97 1nf c97 1nf r173 20.0k r173 20.0k figure 11. audio amplifier schematic
SI2493/57/34/15/04 global isomodem-evb 18 rev. 0.7 resetb +3.3v vcc_usb +4.7v j8 7-12v ac/dc pwr j8 7-12v ac/dc pwr 1 2 r103 1.6 r103 1.6 r105 1.6 r105 1.6 d49 mmbd3004s-7-f d49 mmbd3004s-7-f d11 stps140z sod-123 d11 stps140z sod-123 d50 red +3.3v pwr d50 red +3.3v pwr d13 stps140z d13 stps140z u18 ds1818 u18 ds1818 vcc 2 gnd 3 rst 1 u3 lt1963a-3.3 v sot223 u3 lt1963a-3.3 v sot223 gnd in out gnd c51 0.01uf 25v c51 0.01uf 25v c66 10uf c66 10uf c48 0.1uf 50v c48 0.1uf 50v fb7 600 ohm fb7 600 ohm c96 0.1uf c96 0.1uf fb6 600 ohm fb6 600 ohm - + d12 bridge rectifier - + d12 bridge rectifier c43 1uf c43 1uf r57 0.05 r57 0.05 c42 0.01uf 25v c42 0.01uf 25v r161 681 r161 681 c49 10uf c49 10uf + c44 470uf + c44 470uf u10 to263-3n lm2937es-5.0 u10 to263-3n lm2937es-5.0 gnd in out gnd s1 reset s1 reset r102 1.33k r102 1.33k j9 7-12v ac/dc pwr j9 7-12v ac/dc pwr 3 2 1 figure 12. power supply schematic
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 19 rs-232, female, front view usb keep very close rxd_232 cts_232 rd_232 txd_232 dtr_232 dsr_232 rts_232 cd_232 rxd_t cts_t dsr_t cd_t ri_t txd_t rts_t dtr_t ri_u cd_u dsr_u txd_u rxd_u cts_u rts_u dtr_u +3.3v +3.3v vcc_usb dn5 15v dn5 15v c58 0.1uf c58 0.1uf r112 10k r112 10k dn4 15v dn4 15v dn1 15v dn1 15v fb8 600 ohm blm18ag601sn1 fb8 600 ohm blm18ag601sn1 r110 10k r110 10k u11 max3237 u11 max3237 c2+ 1 c2- 3 c1+ 28 c1- 25 v+ 27 v- 4 t1in 24 t2in 23 t3in 22 t4in 19 t5in 17 r1outb 16 r1out 21 r2out 20 r3out 18 en 13 gnd 2 t1out 5 t2out 6 t3out 7 t4out 10 t5out 12 vcc 26 r1in 8 r2in 9 r3in 11 mbaud 15 shdn 14 c62 0.1uf c62 0.1uf dn8 15v dn8 15v c53 0.1uf c53 0.1uf dn3 15v dn3 15v c52 560pf c52 560pf r109 10k r109 10k j10 db9 j10 db9 cd(o) 1 rxd(o) 2 txd(i) 3 dtr(i) 4 sg 5 dsr(o) 6 rts(i) 7 cts(o) 8 rd(o) 9 mh 10 mh 11 d14 d14 c63 0.1uf c63 0.1uf dn7 15v dn7 15v dn2 15v dn2 15v r111 10k r111 10k u12 cp2102 u12 cp2102 regin 7 vdd 6 gnd 3 vbus 8 d- 5 d+ 4 cts 23 rts 24 rxd 25 txd 26 dsr 27 dtr 28 dcd 1 ri 2 suspend 11 suspend 12 rst 9 gnd epad d15 d15 c57 0.1uf c57 0.1uf c61 0.1uf c61 0.1uf j11 usb type b j11 usb type b +v 1 d- 2 d+ 3 gnd 4 sh 5 sh 6 c59 0.1uf c59 0.1uf c56 0.1uf c56 0.1uf dn6 15v dn6 15v fb9 600 ohm blm18ag601sn1 fb9 600 ohm blm18ag601sn1 r108 0 nopop r108 0 nopop c54 1uf c54 1uf c60 0.01uf c60 0.01uf c55 1uf c55 1uf figure 13. rs-232 interface and usb interface schematic
SI2493/57/34/15/04 global isomodem-evb 20 rev. 0.7 5. bill of materials: si24xx motherboard table 5. si24xx motherboard bill of materials item qty ref value rating voltage tol type pcb footprint mfr part number mfr 1 8 c21, c23, c37, c43, c54, c55, c69, c74 1 f 10 v 10% x7r c0603 c0603x7r100-105k venkel 2 17 c24, c25, c26, c27, c53, c56, c57, c58, c59, c61, c62, c63, c71, c72, c75, c96, c98 0.1 f 10 v 20% x7r c0402 c0402x7r100-104m venkel 3 3 c42, c51, c60 0.01 f 25 v 10% x7r c0402 c0402x7r250-103k venkel 4 1 c44 470 f 25 v 20% alum_ele c c10.3x10.3mm emve250ada471mja0g united chemicon 5 1 c48 0.1 f 50 v 10% x7r c0603 c0603x7r500-104k venkel 6 2 c49, c66 10 f 16 v 10% x5r c0805 c0805x5r160-106k venkel 7 3 c52, c70, c73 560 pf 16 v 10% x7r c0603 c0603x7r160-561k venkel 8 1 c97 1 nf 100 v 10% x7r c0603 c0603x7r101-102k venkel 9 8 dn1, dn2, dn3, dn4, dn5, dn6, dn7, dn8 15 v 225 mw 15 v zener, dual sot23-aak mmbz15vdlt1g on semi 10 2 d11, d13 stps140z 1.0 a 40 v schottky sod-123 stps140z st micro 11 1 d12 bridge rectifier 0.8 a 100 v bridge minidip4 hd01-t diodes inc. 12 3 d14, d15, d49 mmbd300 4s-7-f 225 ma 300 v dual sot23-akc mmbd3004s-7-f diodes inc. 13 11 d41, d42, d43, d44, d45, d46, d47, d48, d50, d52, d53 red 25 ma 1.9 v smt, chip led led-hsmx- c170 hsmc-c170 avago technologies 14 1 d54 bav23a 400 ma 200 v dual sot23-kka bav23a diodes inc. 15 5 fb6, fb7, fb8, fb9, fb11 600 ohm 200 ma smt l0603 blm18ag601sn1 murata 16 4 hw1, hw2, hw3, hw4 spacer 2397 spc technology 17 4 hw5, hw6, hw7, hw8 screw nss-4-4-01 richco plastic co
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 21 18 1 jp11 header 4x1 header conn-1x4 tsw-104-07-t-s samtec 19 2 jp12, jp14 jumper header co nn-1x2 tsw-102-07-t-s samtec 20 1 jp23 header 1x3 header conn-1x3 tsw-103-07-t-s samtec 21 3 jp33, jp34, jp35 jumper unshroud ed conn-1x2 68000-402 berg 22 1 j5 rj-11 rj-11 rj11-dual- mtjg mtjg-2-64-2-2-1 adam tech 23 1 j6 header 5x3 header tsw-105-07-s-t samtec 24 1 j8 conn trblk 2 term blk conn-1x2-tb 1729018 phoenix contact 25 1 j9 power jack 1 a barrel conn-3-pwr adc-002-1 adam tech 26 1 j10 db9 d-sub conn-9-dbf d09s33e4gx00lf fci 27 1 j11 usb type b usb conn-usb-b 292304-1 tyco 28 1 j101 header 8x2 header conn2x8 16/80 pins of 9-146252-0- 08 tyco/amp 29 1 j102 socket 1x4 header ssw-104-01-t-s samtec 30 1 j103 8x2 shrouded header shrouded conn2x8-4w 5103309-3 tyco 31 1 ls1 speaker 0.5 w max re-2308-nl re-2308-nl regal 32 7 r31, r40, r41, r42, r43, r52, r109, r110, r111, r112 10 k ? 1/10 w 1% thickfilm r0603 cr0603-10w-1002f venkel 33 3 r33, r34, r35 1k ? 1/16 w 1% thickfilm r0603 cr0603-16w-1001f venkel 34 1 r48 100 k ? 1/10 w 1% thickfilm r0603 cr0603-10w-1003f venkel 35 1 r57 0.05 ? 1/4 w 5% thickfilm r0805 lcr0805-r050j venkel 36 1 r59 1 ? 1/10 w 1% thickfilm r0603 cr0603-10w-1r00f venkel 37 1 r101 200 ? 1/10 w 5% thickfilm r0603 cr0603-10w-2000j venkel 38 1 r102 1.33 k ? 1/10 w 1% thickfilm r0603 cr0603-10w-1331f venkel 39 2 r103, r105 1.6 ? 1/4 w 5% thickfilm r1206 cr1206-8w-1r6j venkel 40 11 r155, r156, r157, r158, r159, r160, r161, r162, r163, r169, r170 681 ? 1/10 w 1% thickfilm r0603 cr0603-10w-6810f venkel table 5. si24xx motherboard bill of materials (continued) item qty ref value rating voltage tol type pcb footprint mfr part number mfr
SI2493/57/34/15/04 global isomodem-evb 22 rev. 0.7 41 3 r172, r173, r174 20.0 k ? 1/16 w 1% thickfilm r0603 cr0603-16w-2002f venkel 42 1 r175 0 2 a thickfilm r1206 cr1206-4w-000 venkel 43 1 s1 sw push- button 50 ma 12 vdc tactile sw4n6.5x4.5- pb 101-0161-ev mountain switch 44 10 tp5, tp6, tp16, tp17, tp19, tp20, tp21, tp22, tp23, tp24 blue loop testpoint 151-205-rc kobiconn 45 4 tp7, tp8, tp9, tp25 turret turret tp[12594] 2551-2-00-44-00-00-07-0 mill-max 46 1 tp11 red loop testpoint 151-207-rc kobiconn 47 1 u3 lt1963a- 3.3 v 1.5 a max ldo sot223 lt1963aest-3.3#pbf linear tech- nologies 48 1 u5 eeprom 32k serial tssop8n6.4p0. 65 25lc320a-i/st microchip technology 49 1 u10 5 0.5 a max ldo to263-3n lm2937es-5.0 national semiconduc- tors 50 1 u11 max3237 5.5 v rs232 tssop max3237eipwr ti 51 1 u12 cp2102 mcu qfn28n5x5p0. 5 cp2102-gm silabs 52 2 u13, u14 idt74cbt lv3257 tssop-16 idt74cbtlv3257 idt 53 1 u18 ds1818 3.3 v 10% sot-23 ds1818-10 dallas semi- conductor 54 1 u26 74lcx541 buffer tssop20n6.4p 0.65 74lcx541mtc fairchild 55 1 u27 lm4819 350 mw so8n6.0p1.27 lm4819m national semiconduc- tor unpopulated components 56 1 j7 2mm, rt ang shroud ed conn1x5-s5b- ph-sm4-tb s5b-ph-sm4-tb jst 11 r39 10k ? 1/10 w 1% thickfilm r0603 cr0603-10w-1002f venkel 1 1 r108 0 1 a thickfilm r0603 cr0603-16w-000 venkel table 5. si24xx motherboard bill of materials (continued) item qty ref value rating voltage tol type pcb footprint mfr part number mfr
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 23 figure 14. daughter card primary side silkscreen
SI2493/57/34/15/04 global isomodem-evb 24 rev. 0.7 figure 15. daughter card secondary side silkscreen
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 25 figure 16. daughter card primary side layout
SI2493/57/34/15/04 global isomodem-evb 26 rev. 0.7 figure 17. daughter card secondary side layout
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 27 figure 18. motherboard primary side silkscreen
SI2493/57/34/15/04 global isomodem-evb 28 rev. 0.7 figure 19. motherboard silkscreen (secondary side)
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 29 figure 20. motherboard primary side layout
SI2493/57/34/15/04 global isomodem-evb 30 rev. 0.7 figure 21. motherboard secondary side layout
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 31 figure 22. motherboard ground plane layout
SI2493/57/34/15/04 global isomodem-evb 32 rev. 0.7 figure 23. motherboard power plane layout
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 33 6. complete design package on cd (see sales repr esentative for details) silicon laboratories can provide a complete design package of the SI2493/57/ 34/15/04-evb including the following: ? orcad schematics ? gerber files ? bom ? documentation contact your local sales representative or silicon laboratories headquarters sales for ordering information.
SI2493/57/34/15/04 global isomodem-evb 34 rev. 0.7 d ocument c hange l ist revision 0.2 to revision 0.3 ? updated figure 15, ?daughter card secondary side silkscreen,? on page 24. ? updated figure 16, ?daughter card primary side layout,? on page 25. ? updated figure 17, ?daughter card secondary side layout,? on page 26. ? updated ?bill of materials: si24xx daughter card? . revision 0.3 to revision 0.4 ? changed from rev.1.0 to rev.1.1 daughter card. revision 0.4 to revision 0.5 ? changed from rev.3.1 to rev.3.2 motherboard. revision 0.5 to revision 0.6 ? changed from rev.1.1 to rev.1.2 daughter card. ? added fs (soic) package option. revision 0.6 to revision 0.7 ? changed r1.2 to 2.0 daughtercard. ? changed r32 to 5.0 motherboard. ? changed power amplifier chip and speakers. ? removed connector to ssi bus. ? changed regulator and power on reset circuit. ? changed various jumper locations.
SI2493/57/34/15/04 global isomodem-evb rev. 0.7 35 n otes :
SI2493/57/34/15/04 global isomodem-evb 36 rev. 0.7 c ontact i nformation silicon laboratories inc. 400 west cesar chavez austin, tx 78701 tel: 1+(512) 416-8500 fax: 1+(512) 416-9669 toll free: 1+(877) 444-3032 please visit the silicon labs technical support web page: https://www.silabs.com/support/pages/contacttechnicalsupport.aspx and register to submit a technical support request. silicon laboratories, silicon labs, and isomodem are trademarks of silicon laboratories inc. other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders. the information in this document is believed to be accurate in all respects at the time of publ ication but is subject to change without notice. silicon laboratories assumes no responsibility for errors and omissions, and disclaims responsibi lity for any consequences resu lting from the use of information included herein. ad ditionally, silicon laboratorie s assumes no responsibility for the functioning of und escribed features or parameters. silicon laboratories reserves the right to make changes without further notice . silicon laboratories makes no wa rranty, rep- resentation or guarantee regarding the suitability of its products for any particular purpose, nor does silicon laboratories as sume any liability arising out of the application or use of any product or circuit, and s pecifically disclaims any and all liability, including wi thout limitation conse- quential or incidental damages. silicon laborat ories products are not designed, intended, or authorized for use in applications intended to support or sustain life, or for any other application in which the failure of t he silicon laboratories product could create a s ituation where per- sonal injury or death may occur. should buyer purchase or us e silicon laboratories products for any such unintended or unauthor ized ap- plication, buyer shall indemnify and hold silicon laboratories harmles s against all claims and damages.

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