Head Office:

PMC-Sierra, Inc.

#105 - 8555 Baxter Place

Burnaby, B.C. V5A 4V7

Canada

Tel: 604.415.6000

Fax: 604.415.6200

PM5347 S/UNI-155-PLUS

155 Mb/s SATURN User Network Interface for WANs

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 corporate information,

send email to:

info@pmc-sierra.com

PMC-930909 (R7)

 1998 PMC-Sierra, Inc.

October, 1998

SATURN, SCI-PHY, S/UNI-155,

S/UNI-155-LITE, S/UNI-155-PLUS, and

S/UNI-622 are trademarks of PMC-Sierra, Inc.

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE

TYPICAL APPLICATION

155 Mb/s ATM SWITCH PORT INTERFACE

STS-3C/STM-1 OVERHEAD BYTE USAGE

Transmit

Alarm Insert

Signals

Receive

Alarm Detect

Signals

Receive

Overhead

Extract

PM5347

681,3/86

™

155 Mb/s SATURN

™

User Network Inter-

face for WANs

TCA

Transmit

ATM

Process

TXPRTY[1:0]

TDAT[15:0]

TSOC

TWRENB

TFCLK

RXPRTY[1:0]

RDAT[15:0]

RSOC

RFCLK

RRDENB

RCA

Switching

Network

Receive

ATM

Process

Microprocessor Bus for Configu-

ration, Status, and Control

Transmit

Overhead

Insert

O/E

Reference

Clock

TRCLK+/-

TXD+/-

RRCLK+/-

RXD+/-

ALOS+/-

E/O