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For more information on Vitesse Products visit the Vitesse web site

at www.vitesse.com or contact Vitesse Sales at (800) VITESSE

or sales@vitesse.com

©2002 Vitesse Semiconductor Corporation

741 Calle Plano

Camarillo, CA 93012, USA

Tel: +1 805.388.3700

Fax: +1 805.987.5896

www.vitesse.com

GENERAL DESCRIPTION:

VSC872

VSC882

Description

Queuing Engine

Packet Exchange Matrix

Process Technology

0.18

µm CMOS

0.18

µm CMOS

Package Information

440 TBGA

304 TBGA

Maximum Power Dissipation

5W

8W

Core Supply Voltage

1.8V

1.8V

I/O Supply Voltage

2.5V or 3.3V

2.5V or 3.3V

Serial Link Speed

2.125 - 2.644Gb/s

2.125 - 2.644Gb/s

High-Speed Serial Channels

8

16

Specifications:

performance synchronous switch fabric

consisting of two integrated circuits: the

GigaStream Queuing Engine (VSC872) and

the GigaStream Crossbar Switch (VSC882).

Targeted at the access, edge, and metropolitan

markets, GigaStream enables networking

equipment manufacturers to build routing and switching

systems capable of providing a maximum of 80Gb/s of

aggregate user bandwidth with up to 320Gb/s of highly

available backplane bandwidth. GigaStream provides support

for sophisticated Quality of Service (QoS) algorithms, distinct

handling for both Unicast and Multi/Broadcast traffic, as well

as multi-service support for IP, ATM, and Ethernet

High Performance and Scalability

GigaStream’s flexible architecture allows designers to

increase aggregate switching capacity by adding GigaStream

Crossbar Switches, scaling fabric backplane bandwidth in

increments of 40Gb/s up to a maximum 320Gb/s. Each

GigaStream Queuing Engine increases system port count by

providing two additional OC-48 CSIX interfaces up to a

maximum 32x32 OC-48 system configuration. GigaStream’s

scalable architecture, in conjunction with its self-

synchronous serial link technology, provide the framework for

next generation high-speed networking systems.

High Availability

With the special requirements of highly-reliable networking

equipment in mind, the GigaStream switch fabric offers several

features designed to simplify in-situ replacement or upgrades.

These features include both N+1 and N+N redundant switch

core protection schemes, hardware and software switchover

for field maintenance and link failure conditions, fail-safe hot-

swappable buffers, as well as self-synchronizing link circuitry

and link health monitoring, ensuring zero loss of traffic and

continuous operation under failure.

Efficient Bandwidth Utilization

The GigaStream solution is a self-routing switch fabric

featuring virtual output queuing (VOQ) to eliminate head of line

blocking, sophisticated QoS mechanisms to facilitate class-

based traffic management, and logical backplane link rates of

up to four times aggregate user port bandwidths. The fabric

includes an integrated scheduler and dedicated on-chip

queuing for both Unicast and Multi/Broadcast traffic, featuring

eight priority classes supporting both strict priority and

weighted bandwidth allocation.

High Integration Reduces Overall Cost

The GigaStream switch fabric integrates advanced queuing

and scheduling, a synchronous serial crossbar, and multiple

channels of Vitesse’s proven high-speed serial link technology;

all in a two-component fabric chip set. GigaStream is a low-

power solution that consumes only 1.4W per Gb/s of user

bandwidth with the additional capability of powering-down

unused serial links. This results in a high-performance, cost-

effective switch fabric with low overall chip count that minimizes

power, design complexity and board space requirements.