Head Office:

PMC-Sierra, Inc.

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 corporate information,

send email to:

info@pmc-sierra.com

© Copyright PMC-Sierra,

Inc. 2001. All rights reserved.

SATURN and S/UNI are

registered trademarks of

PMC-Sierra, Inc. POS-PHY

Level 3 is a trademark of

PMC-Sierra, Inc.

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

4-Channel 1.0-1.25 Gbps Transceiver

PM8353 QuadPHY™

The QuadPHY creates a highly integrated and cost effective physical layer solution for Gigabit Ethernet or Fibre Channel external

interfaces.

16 GBPS SWITCH APPLICATION

EYE DIAGRAM

Produced by the QuadPHY when driving a 50 Ohm cable, terminated at both near and far ends.

JITTER

Jitter histogram of the QuadPHY showing 6.8 picoseconds, 1

σ jitter with all channels operating.

Switch clock domain

Line card clock domain

RX data clock domains

Uplink clock domain

Serial Point-to-point

Backplane: 4Gbps

Per line card

Gigabit Ethernet

or Fibre Channel

Interfaces

4 Gbps

(trunked)

uplink

Switch Card

Line Card

PM8353

PM8353

PM8353

PM8353

PM8353

PM8353

PM8353

PM8353

MAC/Packet processor

MAC/Packet processor

MAC/Packet processor

MAC/Packet processor

PM8353

PM8353

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