PM5348 datasheet(1/2 Pages) PMC

Part #	PM5348

Description	SATURN USER NETWORK INTERFACE(155.52 & 51.84 MBIT/S)

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Manufacturer	PMC [PMC-Sierra, Inc]

Direct Link	http://www.pmc-sierra.com

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PMC-950446 (R4)

PM5348

PMC-Sierra,Inc.

Two-Channel ATM SATURN User Network Interface

S/UNI-155-DUAL

FEATURES

• Provides two independent SATURN®-

compatible ATM PHY channels in one

chip.

• Provides hardware and software

backward compatibility with the

industry-standard PM5346

S/UNI®-155-LITE chip.

• Implements the ATM Transmission

Convergence (TC) sublayer according

to ATM Forum specifications using the

SONET/SDH 155.52 Mbit/s STS-3c/

STM-1 and SONET 51.84 Mbit/s

STS-1 formats.

• NRZ data format supports category-5

Unshielded Twisted Pair (UTP-5) or

Shielded Twisted Pair (STP) wiring

and optical datalink modules for fiber

optic cable.

• Includes on-chip clock recovery and

clock synthesis, compliant to Bellcore

and ITU-T requirements.

• Operates in timing master or timing

slave (loop timed LAN) modes.

• Frames to SONET 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.

• Allows for protection switching by

monitoring the APS (K1, K2) bytes, bit

error rate thresholds and far-end

synchronization status (S1) bits and

providing interrupts when error

conditions are detected.*

• Inserts and extracts ATM payloads

using ATM cell delineation.

• Provides on-chip 4-cell FIFO buffers in

both transmit and receive paths.

• Operates with a backward compatible

dual 8-bit plus parity or a multi-PHY

compatible 16-bit plus parity*

SATURN-Compliant Interface for

PHYsical layer devices (SCI-PHY™).

• Cell interface is also compatible with

ATM Forum Level 2 UTOPIA direct-

mode specifications.

• Provides a generic 8-bit

microprocessor bus interface for

configuration, control, and monitoring.

• Provides TTL/CMOS compatible inputs

and outputs and differential PECL

inputs.

• Low power, +5 V CMOS technology.

• Packaged in a 28 mm by 28 mm 160-

pin Plastic Quad Flat Pack (PQFP).

*NOTE:Indicates new features not

provided on S/UNI-155-LITE.

APPLICATIONS

• ATM Switches and Hubs

• ATM Routers

• Multichannel ATM Servers

BLOCK DIAGRAM

Analog Edge

Microprocessor

Interface

RXD2+

RXD2-

TCA[2:1]

TWRENB[2:1]

TFCLK

TXPRTY[1:0]

TDAT[15:0]

TSOC[2:1]

RCA[2:1]

RRDENB[2:1]

RFCLK

RXPRTY[1:0]

RDAT[15:0]

RSOC[2:1]

TSEN

SCI-PHY

Interface

Receive

ATM Cell

Processor

Receive

ATM

4-Cell

FIFO

Receive

Framer and

Overhead

Processor

Clock

Generator

ALOS2+

ALOS2-

REFCLK+

TATP

TXD2+

TXD2-

REFCLK-

Driver

TXD1+

TXD1-

Serial

to

Parallel

RXD1+

RXD1-

Clock and

Data

Recovery

ALOS1+

ALOS1-

TFP

Output Port

JTAG

Line Side

System Side

Driver

Clock and

Data

Recovery

Serial

to

Parallel

to

Serial

Parallel

to

Serial

Receive

Framer and

Overhead

Processor

Transmit

Framer and

Overhead

Processor

Transmit

Framer and

Overhead

Processor

Receive

ATM Cell

Processor

Receive

ATM

4-Cell

FIFO

Transmit

ATM Cell

Processor

Transmit

ATM Cell

Processor

Transmit

ATM

4-Cell

FIFO

Transmit

ATM

4-Cell

FIFO

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Manufacturer	Part #	Datasheet	Description
PMC-Sierra, Inc	PM5348	66Kb / 2P	Two-Channel ATM SATURN User Network Interface
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