PMC PM5348 Datasheet

PMC-Sierra,Inc.

Two-Channel ATM SATURN User Network Interface

PM5348

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- s tandard PM5346 S/UNI®-155-LITE chip.

• Implements the ATM Transmission Convergence (TC) sublayer according to ATM Forum specifica tio ns usi ng t he 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 synthe sis, compliant to Bellcor e and ITU-T requirements.

BLOCK DIAGRAM

Line Side

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

• Frames to SONET framing bytes (A 1, 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 t he 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 ce ll delineation.

• Provides on-chip 4-cell FIFO buffers in both transm it 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 wit h ATM Forum Level 2 UTOPIA directmode specifications.

• Provides a generic 8-bit microprocessor bus inte rface for configuration, contro l, and mon ito rin g.

• Provides TTL/CMOS c ompatible 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

System Side

RXD1+

RXD1-

ALOS1+

ALOS1-

TFP

TXD1+

TXD1-

REFCLK+

REFCLK-

TATP

TXD2+

TXD2-

RXD2+

RXD2-

ALOS2+

ALOS2-

Analog Edge

LF1+

LF1-

Clock and

Data

Recovery

Driver

Clock

Generator

Driver

Clock and

Data

Recovery

LF2-

LF2+

LFO2

LFO1

Serial

Parallel

Serial

Parallel

Serial

Parallel

RCLK1

Receive

Framer and

Overhead Processor

Transmit

Framer and

Overhead Processor

Transmit

Framer and

Overhead Processor

Receive

Framer and

Overhead Processor

RCLK2

RFP

Output Port

RALM1

RALM2

Receive

ATM Cell

Processor

Transmit

ATM Cell

Processor

Transmit

ATM Cell

Processor

Receive

ATM Cell

Processor

OUT1

OUT2

Receive

ATM

4-Cell

FIFO

Transmit

ATM

4-Cell

FIFO

Transmit

ATM

4-Cell

FIFO

Receive

ATM

4-Cell

FIFO

Microprocessor

Interface

ALE

CSB

WRB

A[8:0]

D[7:0]

TCLK

TSOC[2:1] TXPRTY[1:0]

TDAT[15:0] TCA[2:1]

TWRENB[2:1]

SCI-PHY Interface

JTAG

TDI

TCK

TDO

RDB

INTB

RSTB

TMS

TFCLK RSOC[2:1] RXPRTY[1:0] RDAT[15:0] RCA[2:1] RRDENB[2:1] RFCLK TSEN

TRSTB

PM5348 S/UNI-155-DUAL

Two-Channel ATM SATURN User Network Interface

TYPICAL APPLICATIONS

Independent

Split 8-bit bus mode for backward compatibility with multiple single-PHY applications.

Applications:

• Multi-SAR Servers

• Single-channel, 8-bit, 25 MHz ATM

Layer Devices

Shared 8-bit bus mode for 8-bit direct mode multi-PHY applications.

Applications:

• Two-channel, 8-bit, 50 MHz ATM Layer Devices

PM5348

-155-DUAL

S/UNI

Two-Channel ATM

SATURN

User

Network Interface

PM5348

S/UNI

-155-DUAL

Two-Channel ATM

SATURN

User

Network Interface

25 MHz, 8-Bit Buses

Shared

50 MHz, 8-Bit Buses

ATM Layer ASIC

or SAR ASIC

ATM Layer ASIC

or SAR ASIC

ATM Layer ASIC

Shared 16-bit bus mode for 16-bit direct mode multi-PHY applications.

Applications:

• Four-channel, 16-bit, 50 MHz ATM Layer Devices

PM5348

S/UNI

-155-DUAL

Two-Channel ATM

SATURN® User

Network Interface

PM5348

-155-DUAL

S/UNI

Tw o-Cha nnel A TM

SATURN

User

Network Interface

Shared

50 MHz, 16-Bit Buses

ATM Layer ASIC

Head Office: PMC-Sierra, Inc. #105 - 8555 Baxter Place Burnaby, B.C. V5A 4V7 Canada Tel: 604.415.6000 Fax: 604.415.6200

To order documentation, send email to: document@pmc-sierra.com or contact the head office, Attn: Document Coordinator

All product documentation is available on our web site at: http://www.pmc-sierra.com For corpo rate information, send email to: info@pmc-sierra.com