PMC-Sierra specifications 155 Mb/s SATURN User Network Interface, PM5350 S/UNI-155-ULTRA

PMC-Sierra,Inc.

155 Mb/s SATURN User Network Interface

PM5350 S/UNI-155-ULTRA

FEATURES

•Low-cost, monolithic SATURN® SONET/SDH ATM User Network Interface (UNI) for category-5 (UTP-5), Shielded Twisted Pair (STP) and optical applications.

•Implements the ATM Transmission Convergence (TC) sublayer according to ATM Forum specifications using the SONET/SDH 155.52 Mb/s STS- 3c/ STM-1 and 51.84 Mb/s STS-1 formats.

•Provides on-chip UTP/STP drivers, receivers, and line equalizers to allow direct connection to 155 Mb/s UTP-5 or STP twisted pair wiring facilities using line coupling transformers.

•Provides a selectable UTP/STP or Pseudo-ECL (PECL) interface to allow direct connection to Optical Data Links (ODLs).

•Includes clock recovery and clock synthesis with on-chip loop filters.

•Operates in timing master or timing slave (loop timed) modes.

•Frames to SONET/SDH framing bytes (A1, A2), processes the section and line Bit Interleaved Parity (B1, B2) and the Far-End Block Error (Z2) bytes.

•Interprets the H1, H2, and H3 payload pointer bytes.

•Processes the SONET path overhead BIP-8 (B3), signal label (C2) and path status (G1) bytes.

•Inserts and extracts ATM payloads using ATM cell delineation.

•Provides on-chip FIFO buffers in both transmit and receive paths.

•Provides on-chip support for GFC and XOFF flow control.

•Provides a synchronous 8-bit plus parity SATURN-Compliant Interface for PHYsical layer devices (SCI-PHY™ ) bus operating at 50 MHz.

•Compatible with ATM Forum UTOPIA interface format.

•Provides a generic 8-bit microprocessor bus interface for configuration, control, and monitoring.

•Provides TTL-compatible inputs and outputs and differential PECL inputs.

•Low power, +5 V CMOS technology.

•Packaged in a 128-pin, 14 mm by

20 mm Plastic Quad Flat Pack (PQFP) with 0.5 mm lead pitch.

APPLICATIONS

•155.52 or 51.84 Mb/s twisted pair or optical ATM LANs

•Workstations and Personal Computer NIC Cards

•Switches, Hubs, and Router Port Cards

•SONET- or SDH-Compliant ATM UNIs

BLOCK DIAGRAM

TVREF

TRREF

ATP2

REFCLK

TCLK

TFP

TCP

TGFC

XOFF

Clock

TSOC

Generator

TXPRTY

TXD+

Parallel

Transmit

Transmit

Transmit

TDAT[7:0]

Twisted

Framer and

to

ATM Cell

ATM

Pair Tx

Overhead

TCA

TXD-

Serial

Processor

4-Cell FIFO

Processor

TWRENB

Analog Edge

TFCLK

RSOC

Receive

RXPRTY

RXD+

Twisted

Clock/Data

Serial

Receive

Receive

RDAT[7:0]

Framer and

to

ATM Cell

ATM

RCA

RXD-

Pair Rx

Recovery

Overhead

Parallel

Processor

4-Cell FIFO

Processor

RRDENB

SD

RFCLK

TSEN

LED

Control

Microprocessor

Interface

PECLSEI

RCAP1

RCAP2

ATP1

OUT[1:0]

RCLK

RFP

RGFC

RCP

D[7:0]

A[10:0]

ALE

CSB

WRB RDB RSTB

INTB

PMC-960709 (R4) PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE  1998 PMC-Sierra, Inc.