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 corporate information,

send email to:

info@pmc-sierra.com

PMC-2000411

© Copyright PMC-Sierra, Inc.

2000. All rights reserved.

March 2000

ETT1, Enhanced TT1, and

LCS are all trademarks of

PMC-Sierra, Inc.

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

Preliminary

PM9311/2/3/5 ETT1™ Chip Set

SYSTEM CONFIGURATION

The following illustration shows a

complete switch, with 32 linecards

connecting to the 32 port fabric. As

shown, fiber links are used to inter-

connect the distant (up to 200 feet)

linecards to the fabric.

Alternatively, linecard silicon can

interface directly to the ETT1 devices, if

sufficient board space, power, thermal

regulation, etc., is available.

APPLICATIONS

• ATM switches with 32 ports of OC-

192c, or up to 128 ports of OC-48c, or

combinations thereof.

• SONET Add/Drop Muxes.

• IP switches with 32 ports of 10Gbit/s.

• Any combination of the above.

SYSTEM CONFIGURATION

Redundant

Crossbar

EPP plus

6 or 7

Dataslices

(14 or 16)

Redundant

(14 or 16)

Crossbar

Scheduler

Scheduler

EPP plus

6 or 7

Dataslices

SerDes

(12 or 14)

CPU

Redundant

CPU

E/O

and O/E

OC-192

E/O

and O/E

Fiber

ETT1 Fabric

SerDes

(12 or 14)

E/O

and O/E

Quad OC-48

E/O

and O/E

Fiber

Fabric Port 1

Fabric Port 32

Linecard

Linecard