View 1980815_963907.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
PM4351
COMET
COMET EVALUATOR BOARD DESIGN REV. 2.0
RELEASED ISSUE 4: JUNE 2000
i PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
REVISION HISTORY Issue No. 1 2 Issue Date Nov. 1998 Feb. 1999 Originator Fayaz Khaki Fayaz Khaki Details of Change Document created. Detailed information added Schematics and layout information added 3 4 Mar 1999 Jun 2000 Fayaz Khaki Marko Batic Updated BOM The part number of a transformer TG261205N1 was exchanged by TG231505N1.
ii PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
CONTENTS 1 2 3 FEATURES .............................................................................................. 1 OVERVIEW.............................................................................................. 3 FUNCTIONAL DESCRIPTION................................................................. 4 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 4 BLOCK DIAGRAM ........................................................................ 4 COMET ......................................................................................... 4 PCI BRIDGE.................................................................................. 6 SEEP............................................................................................. 6 OSCILLATORS ............................................................................. 7 TRANSMIT AND RECEIVE LINE INTERFACE ............................. 7 LINE TERMINATION ..................................................................... 8 PROTECTION CIRCUITRY .......................................................... 8 POWER SUPPLY.......................................................................... 9 BACKPLANE BUS CONNECTOR ................................................ 9 PCI EDGE CONNECTOR ........................................................... 10
SOFTWARE INTERFACE.......................................................................11 4.1 4.2 MEMORY MAP.............................................................................11 PCI 9050 CONFIGURATION........................................................11
5
IMPLEMENTATION DESCRIPTION ...................................................... 14 5.1 5.2 5.3 5.4 ROOT DRAWING, SHEET 1 ....................................................... 14 COMET BLOCK, SHEET 2 ......................................................... 14 LINE INTERFACE, SHEET 3 ...................................................... 14 PCI INTERFACE, SHEET 4 ........................................................ 14
iii PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
5.5 6
POWER, SHEET 5...................................................................... 14
LAYOUT DESCRIPTION ....................................................................... 15 6.1 6.2 6.3 6.4 6.5 COMPONENT PLACEMENT ...................................................... 15 LAYER STACKING AND TRANSMISSION LINE IMPEDANCE CONTROL................................................................................... 16 POWER AND GROUND ............................................................. 17 COMET DECOUPLING............................................................... 18 PCI BUS SIGNAL SPECIFICATION............................................ 18
7 8 9 10 11
SCHEMATICS........................................................................................ 20 LAYOUT ................................................................................................. 21 BILL OF MATERIAL ............................................................................... 22 GLOSSARY ........................................................................................... 27 REFERENCES....................................................................................... 29
iv PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
LIST OF FIGURES FIGURE 1: COMET EVALUATOR BOARD ........................................................ 3 FIGURE 2: BLOCK DIAGRAM ........................................................................... 4 FIGURE 3: BACKPLANE CONNECTOR.......................................................... 10 FIGURE 4: MAIN COMPONENT PLACEMENT DIAGRAM.............................. 15 FIGURE 5: LAYER STACK ............................................................................... 16 FIGURE 6: PCB CROSS SECTION ................................................................. 16 FIGURE 7: GND PLANE .................................................................................. 17 FIGURE 8: VDD PLANE ................................................................................... 18
v PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
LIST OF TABLES TABLE 1: RJ-48C PINOUT ................................................................................. 8 TABLE 2: SYSTEM MEMORY MAP ..................................................................11 TABLE 3: PCI LOCAL ADDRESS SPACE REGISTER......................................11 TABLE 4: PCI LOCAL ADDRESS SPACE .........................................................11 TABLE 5: PCI LOCAL ADDRESS SPACE RE-MAP ......................................... 12 TABLE 6: PCI LOCAL ADDRESS SPACE REGION DESCRIPTORS .............. 12 TABLE 7: PCI CHIP SELECT BASE................................................................. 12 TABLE 8: PCI LOCAL ADDRESS SPACE REGISTERS .................................. 13 TABLE 9: MAJOR COMPONENTS LIST.......................................................... 22 TABLE 10: BILL OF MATERIALS ..................................................................... 22
vi PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
1
FEATURES General * * * PCI Interface - allows for microprocessor access to the COMET via a host PC Provides a platform for the demonstration of the COMET's functions and performance. Provides software-selectable E1, T1, J1 rate selection.
T1 Mode * * * * * * * * Interface to short haul and long haul T1 lines Frames to D4, ESF, SF and SLC-96
TM
formats
Integral HDLC controller for Facilities Data Link Support Per channel payload loopback Automatic gain control to accommodate cable lengths from 0 to 6000 feet Programmable Line buildouts of DSX-1 as well as CSU of -7.5dB, -15dB and -22dB Line interface capable of generating G.703 wave shapes for 100 T1 lines Provides a programmable PRBS test patter generator, receiver and analyzer.
E1 Mode * * * * * Frames to FAS, CAS and CRC-4 formats Integral HDLC controller for Facilities Data Link Support Per channel payload loopback Automatic gain control to accommodate cable lengths from 0 to 2 km Line interface capable of generating G.703 wave shapes for both 75 and 120 E1 lines
1 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
*
Provides a programmable PRBS test patter generator, receiver and analyzer.
2 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
2
OVERVIEW The COMET Evaluator board is part of the COMET Evaluation Kit and allows for the evaluation and demonstration of PMC-Sierra's PM4351 COMET device. It also provides a platform for the development and integration of software. The COMET evaluator board is configured, monitored, and powered through the PCI edge connector. Software drivers are available from PMC-Sierra, Inc. to fully control and utilize the COMET evaluator board. Figure 1: COMET Evaluator Board
u
Conn ector COM ET Backplane
Transm form er
Protection Circuitry
Protection Circuitry
2.048 M hz Osc
M icro Interface
3 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
3 3.1
FUNCTIONAL DESCRIPTION Block Diagram Figure 2: Block Diagram
Bantam
Ba ck p la ne I/F
XFRMR
Bantam
Protection
TX+ /Protec tion
PM4351
R X+ /-
CO MET
P I/F
RJ48C
OSC
C lk
PCI Bridge Chip
SEEP LEDs
PCI Edge Connector
3.2
COMET The PM4351 Combined E1/T1/J1 Transceiver (COMET) is a feature-rich monolithic integrated circuit suitable for use in long haul and short haul T1, E1, and J1 systems with a minimum of external circuitry. The COMET is software configurable, allowing feature selection without changes to external wiring. Analog circuitry is provided to allow direct reception of long haul E1 and T1 compatible signals with up to 43 dB cable loss (at 1.024 MHz in E1 mode) or up to 36 dB cable loss (at 772 kHz in T1 mode) using a minimum of external components. Typically, only line protection, a transformer and a line termination resistor are required. Digital line inputs are provided for applications not requiring a physical T1 or E1 interface. The COMET recovers clock and data from the line and frames to incoming data. In T1 mode, it can frame to several DS-1 signal formats: SF, ESF, T1DM (DDS) and SLC(R)96. In E1 mode, the COMET frames to basic G.704 E1 signals and CRC-4 multiframe alignment signals, and automatically performs the G.706 interworking procedure. In J1 mode, the COMET can frame to the TTC JT-G704 J1 signal. AMI, HDB3 and B8ZS line codes are supported.
4 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
The COMET supports detection of various alarm conditions such as loss of signal, pulse density violation, Red alarm, Yellow alarm, and AIS alarm in T1 mode and loss of signal, loss of frame, loss of signaling multiframe and loss of CRC multiframe in E1 mode. The COMET also supports reception of remote alarm signal, remote multiframe alarm signal, alarm indication signal, and time slot 16 alarm indication signal in E1 mode. The presence of Yellow and AIS patterns in T1 mode and remote alarm and AIS patterns in E1 mode is detected and indicated. In T1 mode, the COMET integrates Yellow, Red, and AIS alarms as per industry specifications. In E1 mode, the COMET integrates Red and AIS alarms. Performance monitoring with accumulation of CRC-6 errors, framing bit errors, line code violations, and loss of frame events is provided in T1 mode. In E1 mode, CRC-4 errors, far end block errors, framing bit errors, and line code violation are monitored and accumulated. Dual (transmit and receive) elastic stores for slip buffering and rate adaptation to backplane timing are provided, as is a signaling extractor that supports signaling debounce, signaling freezing, idle code substitution, digital milliwatt tone substitution, data inversion, and signaling bit fixing on a per-channel basis. Receive side data and signaling trunk conditioning is also provided. In T1 mode, the COMET generates framing for SF, ESF and T1DM (DDS) formats. In E1 mode, the COMET generates framing for a basic G.704 E1 signal. The signaling multiframe alignment structure and the CRC multiframe structure may be optionally inserted. Framing can be optionally disabled. Internal analog circuitry allows direct transmission of long haul and short haul T1 and E1 compatible signals using a minimum of external components. Typically, only line protection, a transformer and an optional line termination resistor are required. Digitally programmable pulse shaping allows the transmission of DSX1 compatible signals up to 655 feet from the cross-connect, E1 short haul pulses into 120 ohm twisted pair or 75 ohm coaxial cable, E1 long haul pulses into 120 ohm twisted pair as well as long haul DS-1 pulses into 100 ohm twisted pair with integrated support for Line Build Out (LBO) filtering as required by the FCC rules. In addition, the programmable pulse shape extending over 5-bit periods allows customization of short haul and long haul line interface circuits to application requirements. Digital line inputs and outputs are provided for applications not requiring a physical T1 or E1 interface. In the transmit path, the COMET supports signaling insertion, idle code substitution, digital milliwatt tone substitution, data inversion, and zero code suppression on a per-channel basis. Zero code suppression may be configured to Bell (bit 7), GTE, or DDS standards, and can also be disabled. Transmit side
5 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
data and signaling trunk conditioning is also provided. Signaling bit transparency from the backplane may be enabled. The COMET provides three transmit HDLC controllers. These controllers may be used for the transmission of messages on the ESF data link (T1) or national use bits (E1) and in any time slot. In T1 mode, the COMET can be configured to generate in-band loop back codes and ESF bit oriented codes. In E1 mode, transmission of the 4-bit Sa codewords defined in ETSI 300-233 is supported. The COMET provides optional jitter attenuation in both the transmit and receive directions. The COMET provides both a parallel microprocessor interface for controlling the operation of the device and serial PCM interfaces that allow backplane rates from 1.544 Mbit/s to 8.192 Mbit/s to be directly supported. Up to four COMET devices can be multiplexed on a byte-interleaved basis on a common bus with no additional arbitration logic. The COMET supports the Mitel ST(R) bus, AT&T CHI(R) and MVIP standards. For a complete description of the COMET, please refer to PMC-Sierra's COMET databook, PMC-970624 [1]. 3.3 PCI Bridge The PCI Bridge used is PLX Technology's PCI9050 PCI Bus Target Interface Chip. The PCI9050 provides a target only interface, and as such does not initiate PCI bus transactions. The local address space is configured to be 32-bit non-multiplexed, big endian, non-burst, and non-prefetchable. Even thought the COMET has only an 8-bit data bus, the PCI9050 is configured as a 32-bit data bus. This was done to simplify the hardware design. Prefetching is not possible in this application because the COMET has a number of registers with read side affects (e.g. interrupt status registers). The local bus is clocked at 33MHz by looping the buffered PCI clock output (BCLKO) available from the PCI9050 back to the local bus clock input. Please refer to the PCI9050 datasheet [4] for more information. 3.4 SEEP The NM93CS46 Serial EEPROM from National Semiconductor is used to store configuration information for the PCI9050 bridge. This specific SEEP (or
6 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
equivalent) is required by PCI9050 because it supports sequential read operations. The SEEP is 1Kbit deep, 800 bits of which are occupied by the PCI9050 configuration data, leaving 224 bits (28 bytes) unused. Refer to the PCI9050 datasheet [4] for information on the format of the configuration data stored in the SEEP. 3.5 Oscillators The COMET can run in either T1 or E1 mode. In T1 mode, oscillator Y1 should be populated with a 1.544 MHz oscillator. In E1 mode, oscillator Y1 should be populated with a 2.048 MHz oscillator. 3.6 Transmit and Receive Line Interface The transmit and receive line interface consists of line connectors, line protection circuitry and magnetics. The magnetics used on this design is a dual package that contains both a receive and transmit transformer. Both the receive and transmit transformers have a 1:2.42 turns ratio with the "1" always on the chip side. Please refer to Table 9 for a list of manufacturers. The evaluator board provides two types of line interface connectors, a minibantam (J1 and J2) and RJ-48C (J3). Only one set of connectors can be used at anytime, either J1 & J2 or J3. The mini-bantam connectors, J1 (Receive) and J2 (Transmit) are standard connectors used in T1/E1 interfaces. The RJ48C has been provided according to the ANSI T1.403 standard for a Universal Service Ordering Code (USOC) connector. Table 1 below details the pinout for the RJ-48C connector.
7 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
Table 1: RJ-48C Pinout Pin 1 2 3 4 5 6 7 8 Signal RXRING RXTIP N.C. TXRING TXTIP N.C. N.C. N.C.
3.7
Line Termination The line interface provides one termination scheme for both T1 and E1 rates. A termination of 110 is used to allow the interface to be compatible with both 100 T1 and 120 E1. This provides a software switchable reference board for both T1 and E1 by simply configuring the COMET device.
3.8
Protection Circuitry The protection circuitry prevents overvoltage and overcurrent power surge due to lighting strikes or other power impairments. This circuitry is intended to provide the necessary protection from both longitudinal (common mode) and metallic (differential) surges as well as for power cross. This circuit has not undergone formal compliance testing however an identical circuit used on the COMET Reference Design [2] has passed both FCC Part 68 and ETSI 300 046. The protection network employs PTC thermistors from Raychem. These devices exploit the positive thermal coefficient of polymer thermistors to provide relatively fast acting over-current protection. In this circuit they take the place of the series line resistors and fuses typically used in CSU protection circuits. Compared with
8 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
fuses, PTC thermistors have the advantage that they reset themselves after an over-current event. Unfortunately the resistance after the thermistors reset, referred to as the post-trip resistance, is often somewhat higher than the original resistance of the device. This could potentially unbalance the line and prevent the unit from returning to service. The LC01-6 transient voltage suppressor (TVS) from Semtech serves to very quickly clamp any over-voltage transients on the transmit line. The device will zener during which the voltage drop across the device is typically less than 10V. When the voltage is interrupted or falls below the reverse standoff voltage of the device (6.0 V), the LC01-6 will return to a high impedance state. The SRDA3.3-4 TVS diode array serves to further clamp any voltages above or below the power supply rails. The transformers provide 1500Vrms line isolation and serve to impedance match the lines to the transceiver line interface. The transformer chosen for this application is a dual package that contains both a receive and transmit transformer. Please refer to Table 9 for a list of manufacturers. 3.9 Power Supply The COMET evaluator design contains components that operate at either 3.3V or 5V, referenced to ground. The 5V supply is provided to the board through the PCI connector. The 3.3V supply is generated on the board via a DC-DC voltage regulator. It is recommended that 5.0V power is provided before 3.3V power to avoid device latchup. Please refer to the COMET datasheet [1]for further details of powering up the COMET device. 3.10 Backplane Bus Connector The Backplane bus connector provides an interface to the COMET backplane signals. This is provided to allow for easy access to the backplane signals. By simply connecting across the jumpers (connecting pins 1 to 2, 3 to 4, etc), the backplane connector also allows for easy configuration of external payload loopback.
9 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
Figure 3: Backplane Connector
1 BRFP BRPCM BRSIG BRCLK 7 8 2 BTFP BTPCM BTSIG BTCLK
3.11 PCI Edge Connector The PCI Edge Connector has been implemented as a standard 5.0V, 32 bit PCI connector.
10 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
4 4.1
SOFTWARE INTERFACE Memory Map Table 2: System Memory Map PCI9050 Local Address Space CS_0 Address 0000-00FF Device PM4351 COMET R/W R/W Description COMET Registers
4.2
PCI 9050 Configuration The following sets of tables specify the values that should be programmed into the SEEP. These values will be loaded into the PCI9050 registers on power-up. Please refer to the PCI9050 datasheet [4] for further details. NOTE: The checksum of the SEEP is 0x230D. Table 3: PCI Local Address Space Register Register PCIIDR PCIREV PCISVID PCIILAR Address 0x000 0x004 0x008 0x00C Description Device_ID|Vendor_ID Class_Code Subsystem_ID|Subsystem_Vendor _ID Maximum Latency MinimumGrant IntPin Routing Value 0x905010B5 0x06800000 0x00000000 0x00000000
Table 4: PCI Local Address Space Register LAS0RR LAS1RR LAS2RR Address 0x010 0x014 0x018 Description Local_Address_Space_0_Range Local_Address_Space_1_Range Local_Address_Space_2_Range Value 0x0FFFFC00 0x00000000 0x00000000
11 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
LAS3RR EROMRR
0x01C 0x020
Local_Address_Space_3_ Expansion_ROM_Range
0x00000000 0x00000000
Table 5: PCI Local Address Space Re-Map Register LAS0BA LAS1BA LAS2BA LAS3BA EROMBA Address 0x024 0x028 0x02C 0x030 0x034 Description Value
LocalAddressSpace_0_Base_Addr 0x00000001 ess(Re-Map) LocalAddressSpace_1_Base_Addr 0x00000000 ess(Re-Map) LocalAddressSpace_2_Base_Addr 0x00000000 ess(Re-Map) LocalAddressSpace_3_Base_Addr 0x00000000 ess(Re-Map) Expansion_ROM_Base_Address( Re-Map) 0x00000000
Table 6: PCI Local Address Space Region Descriptors Register LAS0BRD LAS1BRD LAS2BRD LAS3BRD EROMBR D Address 0x038 0x03C 0x040 0x044 0x048 Description LocalAddressSpace0_Bus_Region _Descriptors LocalAddressSpace1_Bus_Region _Descriptors LocalAddressSpace2Bus_Region_Descriptors LocalAddressSpace3_Bus_Region -Descriptors Expansion_ROM_Bus_Region_De scriptors Value 0x1681A1A0 0x00000000 0x00000000 0x00000000 0x00000000
Table 7: PCI Chip Select Base Register CS0BASE CS1BASE Address 0x04C 0x050 Description Chip_Select_0_Base Chip_Select_1_Base Value 0x00010001 0x00000000
12 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
CS2BASE CS3BASE
0x054 0x058
Chip_Select_2_Base Chip_Select_3_Base
0x00000000 0x00000000
Table 8: PCI Local Address Space Registers Register INTCSR CNTRL NULL NULL NULL NULL NULL NULL NULL Address 0x05C 0x060 0x064 0x068 0x06C 0x070 0x074 0x078 0x07C Description Interrupt_Control/Status User_I/O| EEPROM|Init_Control Null_data Null_data Null_data Null_data Null_data Null_data Null_data Value 0x00000041 0x00024492 0xFFFFFFFF 0xFFFFFFFF 0xFFFFFFFF 0xFFFFFFFF 0xFFFFFFFF 0xFFFFFFFF 0xFFFFFFFF
13 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
5
IMPLEMENTATION DESCRIPTION The COMET Evaluator board schematics were captured using Cadence software Concept Schematics Capture tool.
5.1
ROOT DRAWING, Sheet 1 This sheet provides an overview of the major functional blocks of the COMET Evaluator board. It shows interconnections between the COMET_BLOCK, PCI_INTERFACE_BLOCK, LINE_INTERFACE and POWER blocks.
5.2
COMET BLOCK, Sheet 2 This sheet shows the COMET device and its power circuitry. The power circuitry includes a schottky diode for powering up the COMET device and separate filtering circuitry for the analog and digital power pins. A LED is connected to the INTB pin to allow for visual indication of interrupts being generated by the COMET.
5.3
LINE INTERFACE, Sheet 3 This sheet shows the termination, magnetics and protection circuitry for the line interface. A single dual package 1:2.42 transformer is used to couple the COMET transmit and receive line to the connectors. The LC01-6 transient voltage suppressor (TVS), the PTC and the SRD3.3-4 provide over voltage and lightning protection. Connection to both bantam and RJ48C connectors are provided.
5.4
PCI INTERFACE, Sheet 4 This sheet shows the PCI connector and the PCI bridge chip. The PLX PCI9050 PCI bridge chip is compliant to PCI Specification 2.1.
5.5
POWER, Sheet 5 The LM3940 drop-out voltage regulator supplies 3.3V to the COMET device. Two LED's are provided to display the status of power to the COMET board, one for 5.0V and one for 3.3V.
14 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
6 6.1
LAYOUT DESCRIPTION Component Placement The overall placement strategies of the components are: * * * Place the analog circuitry away from the digital circuitry. The PCI Bridge device is placed such that all the PCI interface traces are within the specified length limits of the PCI Rev. 2.1 Specification. The oscillator is placed in a quiet digital section as noise on its power supply will cause jitter on the output, and the oscillator itself generates noise that may affect sensitive analog circuits. All source termination resistors are placed near the outputs and load termination resistors are placed near the inputs. All pull up/down resistors are placed near the output pins. All decoupling capacitors are placed near the power supply pins.
* * *
The overall placement is as follows: Figure 4: Main Component Placement Diagram
B antam
Line Protection
CO MET
R J48 Transfo rm er
PC I Bridg e C hip
O SC
PCI C onnector
15 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
6.2
Layer Stacking and Transmission Line Impedance Control The COMET Evaluator card has four layers: (from the top down) layer 1 and 4 for signals, layer 2 for ground, and layer 3 for power. The dimension of the card conforms to the 5V PCI Raw Short Card, with custom mounting hole locations. The layer configurations are shown below: Figure 5: Layer Stack
SIG1 GND VDD SIG2
Figure 6: PCB Cross Section
w t
1 Oz Copper
dielectric r
Ground Plane
h1 h2 h3 t
dielectric r dielectric r
1 Oz Copper 1 Oz Copper
1 Oz Copper
Power Plane
t
where
r = relative dielectric constant, nominally 5.0 for G -10 fibre - glass epoxy
t = thickness of the copper, fixed according to the weight of copper selected. For 1 oz copper, the thickness is 1.4 mil. This thickness can be ignored if w is great enough. h1, h2, h3 = thickness of dielectric. w = width of copper
The PCB related parameters are shown in the following table:
16 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
Parameters Board Thickness (mil)
Nominal 62 (including copper thickness) 7
dielectric thickness between layers 1 and 2 (mil) (h1) dielectric thickness between layers 2 and 3 (mil) (h2) dielectric thickness between layers 3 and 4 (mil) (h3) Relative dielectric constant
44
7
4.2
6.3
Power and Ground One ground/Vdd pair is used for the whole board. The following diagrams illustrates the power and ground plane distribution: Figure 7: GND Plane
Analog Routing
G round Plane
17 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
Figure 8: VDD Plane
Plane
3.3V Plane
5.0V Plane
A single ground is provided for all circuitry, except the transformer and RJ48 and Bantam connectors. 6.4 COMET Decoupling All of the analog power supply pins of the COMET employ a RC Network to filter out low frequency Vdd noise. The analog power pins associated with the transmit circuitry also have fairly large capacitors connected to them to provide the large currents required to generate the transmit pulses. A 0.1uF/0.01 uF decoupling capacitor is also placed as close to each VDDI/VDDO digital power pin as possible. Ferrite beads are not used on the digital power pins because they add series inductance which limits the current that is required to recharge the decoupling capacitors. If noise attenuation is required, a small surface mount series resistor (1 to 10 Ohms) can be added in series with the power pin. 6.5 PCI Bus Signal Specification This layout follows the PCI Rev. 2.1 Specification layout restrictions. The PCI SIG specification has stringent and detailed rules on decoupling, power consumption, trace length limits, routing, trace impedance, as well as signal loading. Therefore, it is essential to check the latest PCI specification before proceeding with new designs and layouts.
18 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
The COMET Evaluator design board conforms to the following PCI Specification/Recommendations: * * * * * Component height on the component side does not exceed 0.570 inches, and on the solder side does not exceed 0.105 inches. PCI CLK signal trace is 2.5 inches +/- 0.1 inches and is connected to only one load. All 32-bit interface signals have the maximum trace length of 1.5 inches. Trace impedance for shared PCI signals are within 60 - 100 Ohm range, and trace velocity is between 150 and 190 ps/inch. 20 mil wide traces are used to connect the power and ground pins on PCI connector to their respective planes and the trace lengths are limited to 250 mil. Route all traces over continuous image planes.
*
19 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
7
SCHEMATICS
20 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
8
LAYOUT
21 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
9
BILL OF MATERIAL Table 9: Major Components List Ref. No U3-U4 U5 TR1TR4 U5 U8 U9 T1 * Component LC01-6 SRDA3.3-4 ThermistorTR250-180 LM3940 NM93CS46 PCI-9050 TG231505N1 T1137 Manufacturer Semtech 805-498-2111 Semtech Raychem 800-227-7040 National Semiconductor 408-721-5000 Fairchild Semiconductor 1-800-364-3577 PLX Technology 800-759-3735 Halo Electronics 650-568-6161 Pulse Inc. 619-674-8100 * The T1137 Pulse transformer has not been tested. Table 10: Bill of Materials Part Name Value 1 2 3 1N5817_1N5817M 74HC08_SOIC -HCMOS BANTAM-PCB Jacks Part Number 1N5817M 74HC08D ELECTROSONIC PC-834-J(BLACK) Ref Des D1 U7 J1, J2 Qty 1 1 2 SMD 16 PIN SMD 16 PIN 1 160 pin PQFP 1 8-pin DIP 1 SOT-223 1 SOIC8 RES200 1 4 Package Type Quantity SOIC16 2
22 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
4
CAPACITOR0.01UF, 16V, X7R_603 CAPACITOR0.1UF, 16V, X7R_603 CAPACITOR0.47UF, 25V, TANT TEH CAPACITOR22PF, 16V, NPO_603 CAPACITOR22UF, 6.3V, TANT TEH CAPACITOR4.7UF, 10V, TANT TEH CAPACITOR47UF, 6.3V, TANT TEH CAPACITOR68UF, 6.3V, TANT TEH COMET_QFPBASE FUSE__SMD_ SOCKET-1.0 00A, NANO HEADER .1"x.1" straight male HEADER_4X2 4 position header, straight male
DIGIKEY PCC103BVCT-ND Panasonic ECUV1H103KBV DIGIKEY PCC1762CT Panasonic ECJ-1VB1C104K DIGI-KEY PCT5474CT-ND Panasonic ECS-H1EY474R DIGI-KEY PCC220ACVCT Panasonic ECU-V1H220JCV DIGI-KEY PCT1226CT-ND Panasonic ECS-H0JC226R DIGI-KEY PCT2475CT-ND Panasonic ECS-H1AX475R DIGI-KEY PCT1476CT-ND Panasonic ECS-H0JD476R DIGI-KEY PCT1686CT-ND Panasonic ECS-H0JD686R PMC PM4351-RI DIGIKEY F1222CT-ND Littelfuse 154001 DIGI-KEY S1011-36-ND Sullins PZC36SAAN DIGI-KEY S2031-36-ND
C8, C11-C18, C20, C21, C24, C25, C28, C29
15
5
C9, C10, C19, C23, 7 C26, C27, C30 C1, C6 2
6
7
C31
1
8
C3, C4
2
9
C22
1
10
C7
1
11
C2, C5
2
12 13
U6 F1
1 1
14
TP1-TP10
10
15
J4
1
23 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
16 17
LC01_6_SMDBASE LED-GREEN, PCB .29 RIGHT ANGLE LED-YELLOW, PCB .29 RIGHT ANGLE LM3940_SOTBASE MAX701_SOIC -BASE MMBT3906_S OT23-BASE NM93CS46_DI P_SOCKETBASE
SEMTECH LC01-6 DIGI-KEY L20365-ND Chicago Mini/SLI 5650F5 DIGI-KEY L20367-ND Chicago Mini/SLI 5650F7 LM3940IMP-3.3 MAXIM MAX701ESA MMBT3906LT1 NM93CS46EN Fairchild NM93CS46
U3, U4 D2, D3
2 2
18
D4
1
19 20 21 22
U1 U2 Q1 U8
1 1 1 1
23
OSC_TTL_DIP Champion K1150BA-2.048MHZ , 50 2.048Mhz PPM, CHA MMD MA050T-2.048Mhz PBSWITCHBASE Pushbutton switch DIGI-KEY P8007S-ND
Y1
1
25
SW1
1
26 27 28 29 30
PCI9050_PQF P-BASE RESISTOR-0, 5%, 603 RESISTOR-1, 5%, 603 RESISTOR1.0, 1%, 1206 RESISTOR100K, 1%, 603
PLX PCI9050 DIGI-KEY P000-GCT-ND Xicon 301-1.0 DIGI-KEY P1.0RCT-ND Panasonic ERJ-8RQF1.0 DIGI-KEY P100KHCT-ND Panasonic ERJ-3EKF100K
U9 R24 R3, R4 R6 R13
1 1 2 1 1
24 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
31
RESISTOR100K, 5%, 1206 RESISTOR10K, 1%, 603 RESISTOR12.7, 1%, 603 RESISTOR130, 5%, 603 RESISTOR18.2, 1%, 603 RESISTOR330, 5%, 603 RESISTOR4.7, 5%, 603 RESISTOR4.7K, 5%, 603 RESISTOR75.0, 1%, 603 RES_ARRAY_ 4_SMD-4.7K RJ48MOLEX_95001
DIGI-KEY P100KECT-ND Panasonic ERJ-8GEYJ100K Panasonic ERJ-3EKF10K DIGI-KEY -- P12.7HCT-ND Panasonic ERJ-3EKF12.7 DIGI-KEY P130GCT-ND Panasonic ERS-3EKE18.2 DIGI-KEY P18.2HCT-ND Panasonic ERJ-3GSYJ330 DIGI-KEY P330GCT-ND Panasonic ERJ-3GSYJ330 Xicon 301-4.7 Panasonic ERJ-3GSYJ4.7K Panasonic ERJ-3EKF75.0 DIGI-KEY Y44.7KCT-ND Panasonic EXB-V8V4K7JV MOLEX 95001-9841 (part # 95122-2881 from Richey Electronics (604-420-0313)) SEMTECH SRDA3_3_4 TG231505N1
R1
1
32 33 34 35 36 37 38 39 40 41
R10 R15, R16 R8 R14 R7, R9 R5 R2, R11, R12, R17R22 R23 RN1-RN12 J3
1 2 1 1 2 1 9 1 12 1
42 43 44
SRDA3_3_4_S MD-BASE TG231505N1_ SOIC-BASE
U5 T1 TR1-TR4
1 1 4
THERMISTOR- Raychem TR250-180U TR250-180 , RES200 Socket DIGI-KEY ED5037
45
Y1
6
25 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
46 47 48
8 pin dip socket DIGI-KEY ED6008-ND Mill Max 614-93-308-31-012 Bantam Covers ADC Telecommunications PC-834-C-Black Shorting Jumpers DIGI-KEY S9002-ND Sullins SSC02SYAN
U8 J1, J2 J4
1 2 4
Note: Item 27 - 0 ohm resistor does not have to be populated
26 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
10
GLOSSARY CompactPCI Compact Peripheral Component Interconnect. A bus standard based on the PCI standard which defines a more rugged mechanical form factor for industrial use. Channel Service Unit. Off-premise T1 interface level provided by CSU. Digital Cross-connect T1 interface level. European First Order transmission format. This is the standardized (ITU-T G.704) base format of the European Pleisosynchronous Digital Hierarchy. It operates at 2.048Mbps. The E1 format consists of frames consisting of 32 octets, or timeslots (numbered 0 to 31). Timeslot 0 alternates between containing an FAS and containing the National Use bits (Sn[8:4]) and an A-bit for RAI. Timeslot 0 also contains an International Use Bit (Si) which can be used to support CRC Multiframe. High Level Data Link Control. A family of bit-oriented protocols providing frames of information with address, control and frame check sequence fields. Multi-Vendor Integration Protocol. A TDM bus standard which is an extension of Mitel's ST-BUS. The MVIP bus is used in computer telephony integration applications. Peripheral Component Interconnect - A bus standard which defines 32 bit transfers over a defined electrical interface. An adapter board for a PCI system which acts as a PCI Master and performs the additional functions of clock distribution and bus arbitration. An adapter board for a PCI system which does not initiate bus transactions. Also known as a slave. Extend Super Frame format. An 8 pin RJ-45 modular connector with a standardized pinout used for 100 ohm T1 and 120 ohm E1 interfaces.
CSU DS1 DSX-1 E1
HDLC
MVIP
PCI PCI Host
PCI Target ESF RJ-48C
27 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
SEEP
Serial EEPROM (Electrically Erasable Programmable Read Only Memory) - A type of non-volatile memory which is programmed and read using a serial interface. T1. A level 1 digital trunk operating at 1.544 Mbit/s that is popular in North America and Japan. It is made up of 193 bits, grouped as 1 framing bit followed by 24 DS-0 channels of 8 bits each. A standard specifying a DS1-rate metallic interface, referred to as the network interface (NI), between the network and a customer installation. Time Division Multiplexed - A TDM signal consists of several channels of data which are multiplexed together in time so that a byte (or word, etc.) of one channel of data is transferred, following by a byte of the second, etc.
T1
T1.403
TDM
28 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
11
REFERENCES
1. PMC-Sierra, Inc., PM4351 COMET Data Sheet, Issue 4, April 1998 2. PMC-Sierra, Inc., PM4351 COMET Reference Design, Issue 2, April 1998 3. ANSI - T1.403-1995 - American National Standard for Telecommunications - Carrier to Customer Installation - DS-1 Metallic Interface Specifications. 4. PLX Technology, PCI 9050-1 Data Book, Version 1.01, April 17, 1997
29 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
NOTES
30 PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS' INTERNAL USE
RELEASED EVALUATOR DESIGN REV. 2.0 PMC - 980815 ISSUE 4
PM4351 COMET
COMET EVALUATOR BOARD REV. 2.0
CONTACTING PMC-SIERRA, INC. PMC-Sierra, Inc. 105-8555 Baxter Place Burnaby, BC Canada V5A 4V7 Tel: Fax: (604) 415-6000 (604) 415-6200 document@pmc-sierra.com info@pmc-sierra.com apps@pmc-sierra.com http://www.pmc-sierra.com
Document Information: Corporate Information: Application Information: Web Site:
None of the information contained in this document constitutes an express or implied warranty by PMC-Sierra, Inc. as to the sufficiency, fitness or suitability for a particular purpose of any such information or the fitness, or suitability for a particular purpose, merchantability, performance, compatibility with other parts or systems, of any of the products of PMC-Sierra, Inc., or any portion thereof, referred to in this document. PMC-Sierra, Inc. expressly disclaims all representations and warranties of any kind regarding the contents or use of the information, including, but not limited to, express and implied warranties of accuracy, completeness, merchantability, fitness for a particular use, or non-infringement. In no event will PMC-Sierra, Inc. be liable for any direct, indirect, special, incidental or consequential damages, including, but not limited to, lost profits, lost business or lost data resulting from any use of or reliance upon the information, whether or not PMC-Sierra, Inc. has been advised of the possibility of such damage. (c) 2000 PMC-Sierra, Inc. PM-980815 (R3) ref PMC-961273 (R6) Issue date: March 1999
PMC-Sierra, Inc.
105 - 8555 Baxter Place Burnaby, BC Canada V5A 4V7 604 .415.6000

▲Up To Search▲

Price & Availability of 1980815

	To Download 1980815 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .