PHYSICAL LAYER PRODUCT

VSC3138

F E A T U R E S :

3.6Gb/s, 40x40 Strictly Nonblocking Switch Matrix with Dual

User Configuration Registers and Multicast and Address Striping

Programming Modes

3rd Generation Input Signal Equalization (ISE) 'Eye Opener' Technology
with Global and Per Channel Multilevel Programmable Control

At-Speed Built-in Self-Test (BIST) Capability with Auxiliary DRIVE

and SENSE I/O, on Board PRBS Generator/Detector, and Programmable
Temperature Alarm/Sensor

Global and Per Channel Programmable CML Output Level Control

with Integrated Back Termination

Parallel and Serial Programming Modes with Secondary

Serial Access Port for Configuration and Monitoring

Software Control to Optimize Power Dissipation

B E N E F I T S :

3.6Gb/s NRZ performance provides protocol transparency with

exceptional performance and margin for 2.5Gb/s and 3.125Gb/s

switching applications.

Advanced ISE ('Eye Opener') capabilities to reduce Inter Symbol

Interference (ISI) due to PCB losses and/or copper cable losses to
enable longer back planes or shelf to shelf interconnects.

BIST (System) features Enable Simplified Design, Verification,

Production Testing at the Board or System Level, and in Application
Signal Monitoring.

Enhanced Signal Integrity and Package Design for Ease of PCB
Design

3.6Gb/s 40x40 Asynchronous Crosspoint Switch

PHYSICAL LAYER PRODUCT

PB-VSC3138-001

A P P L I C A T I O N S :

Large 3 Stage CLOS Fabrics of up to 2,880x2,880 I/O Ports with up

to 10Tb/s of Data Throughput

DWDM Switches

Wavelength Routers

Storage Area Network (SAN) Switch Fabrics

Packet Switching Fabrics

M A R K E T S :

Core and Metro Transport

Enterprise

High-Speed Automated Test Equipment

Broadcast Video

S P E C I F I C A T I O N S :

3.6Gb/s NRZ Data Rate

2.5V Power Supply [2.5V/3.3V Program Port Power Supply]

2.5V/3.3V CMOS TTL Compatible I/O

Differential CML I/O with Integrated Termination Impedance

4.4W Typical Power Dissipation with Output Levels

33x33mm, 1.27mm Pitch, 613 BGA Package

0�C to +85�C Operating Temperature Range

741 Calle Plano
Camarillo, CA 93012
Tel: 805.388.3700
Fax: 805.987.5896
www.vitesse.com

Your Partner for Success.

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

The VSC3138 is a 40x40 asynchronous
crosspoint switch, designed to carry
broadband data streams. The fully non-
blocking switch core is programmed through
a multi-mode port interface that allows
random access programming of each

input/output port. A high degree of signal integrity is maintained
throughout the chip by fully differential signal paths.

Each data output can be programmed to connect to one of the 40
inputs. The signal path is unregistered and fully asynchronous,
so there are not any restrictions on the phase, frequency, or
signal pattern on any input. Each high-speed output is a fully
differential switched current driver with on-die terminations
for maximum signal integrity. Data inputs are terminated on
die through 100

resistors between true and complement

inputs with a common connection to an internal bias source,
facilitating AC-coupling to the switch inputs.

A multi-mode, programming interface is provided that allows
commands to be sent as serial data or multiplexed parallel

G E N E R A L D E S C R I P T I O N :

3.6Gb/s 40x40 Asychronous Crosspoint Switch

data. Core programming can be sequential on a port by port
basis, or multiple program assignments can be queued and
issued simultaneously using the CONFIG bit. The INIT feature
will reset the entire switch into a "straight-through"
configuration (A0 to Y0, A1 to Y1, etc.) or it can be programmed
by the user to initialize to any other configuration.
Programming of the VSC3138 is via an 11-bit multiplexed
ADDR/DATA bus in conjunction with the ALE, RD, WR, CONFIG
and INIT pins. Additionally, the CONFIG and INIT signals can
be set via an internal control register to reduce the number of
signals required to interface with the switch. To lock-in
programming of switch connections, INIT, and CONFIG can be
disabled through software.

Unused channels may be powered down to allow efficient
use of the switch in applications that require only a subset of
the channels. Power-down is enabled in software by
programming individual unused outputs with a power-down
code. A secondary access port allows asynchronous
readback and configuration control to take place while the
primary programming port is in use.

VSC3138

EYE OPENER INPUT SIGNAL EQUALIZATION PERFROMANCE:

Signal through 50" of microstrip trace

Signal through 150" of microstrip trace

Signal output with ISE enabled

Электронный компонент: VSC3138