www.vitesse.com
Product
Brief
3.6Gb/s 144x144 Asynchronous Crosspoint Switch
Physical
Layer
Products
VSC3140
General Description
The VSC3140 is a 144x144 asynchro-
nous crosspoint switch, designed to
carry broadband data streams. The fully
non-blocking switch core is pro-
grammed through a multi-mode port in-
terface that allows random access pro-
gramming of each input/output port.
Each data output can be programmed
to connect to one of the 144 inputs. The
signal path is unregistered and fully
asynchronous, so there are no restric-
tions on the phase, frequency, or sig-
nal pattern on any input. Each high-
speed output is a fully differential
switched current driver with on-die ter-
minations for maximum signal integrity.
A multi-mode, programming interface is
provided that allows commands to be
sent as serial data or multiplexed par-
allel data. Unused channels may be
powered down to allow efficient use of
the switch in applications that require
only a subset of the channels. A sec-
ondary serial access port allows asyn-
chronous readback and configuration
control to take place while the primary
programming port is in use.
Features:
Per Channel Programmable
Input Equalization
Per Channel Programmable
Output Drive Levels
On Board PRBS Generator/
Detector
Parallel and Serial Programming
Modes
Secondary Serial Access Port
for Configuration and Monitoring
Non-blocking Architecture with
Broadcast and Multicast
Modes
Soft Power Down for Unused
Channels
Boundary Scan Support for
Data I/O
Integrated Temperature
Sensor/Alarm
On-chip Input and Output
Terminations
Benefits:
144x144 Inputs and Outputs
Allow Creation of 3-stage Clos
Switch Fabrics of up to 10368 x
10368 Array Providing up to 37
Terabits of Data Throughput
Programmable Integrated
Signal Equalization (ISE) Func-
tion Improves Output Jitter and
Multi-pass Performance, Re-
ducing the Need for Inter-stage
Retimers in Multi-stage Switch
Fabrics
DWDM Platform
Core and Edge Router
Storage Area Network
Wavelength Routers
Digital Cross Connect
Optical Cross Connect
Applications:
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
Copyright 2001 Vitesse Semiconductor Corporation
and the Vitesse logo are all registered trademarks
of Vitesse Semiconductor Corporation
www.vitesse.com
Product
Brief
Physical
Layer
Products
VSC3140 Block Diagram
Benefits Continued:
Programmable ISE and Pro-
grammable Output Drive Level
on an Individual Channel Basis
Allow Users to Optimize the
Switch Operation Based on
System Requirements
System Level Features such
as Drive/Sense I/O Ports and
Boundary Scan Allow in
System Diagnostic and Moni-
toring of each Input and Output
for Signal Integrity Through the
Entire Switch
Specifications:
3.6Gb/s NRZ Data Bandwidth
144 Inputs by 144 Outputs
Crosspoint Switch
Single 2.5V Power Supply
2.5/3.3V CMOS/TTL
Control I/O
Differential CML Data Output
Driver
15/21W Typical Power in Low/
High Drive Mode
20/25W Max Power in Low/
High Drive Mode
125MHz Multi-mode Program-
ming Port
High Performance 45mm,
1.27mm pitch, 1072 BGA
Package
Operating Temperature Range
from 0C to 85C
Input Signal Equalization Performance
3.6Gb/s 144x144 Asynchronous Crosspoint Switch
VSC3140
Input Eye Diagram
Output Eye Diagram
User INIT Register
Staging Register
Input signal equalization (ISE)
and scan register
s
Output le
vel contr
ol
and scan register
s
Switch Configuration Register
Programming Interface
Temperature
Alarm
PRBS
Generator/Detector
Switch Core
CONFIG
DRIVE [1:0]
SENSE [1:0]
ADDR/DATA
ALE
Sec_SDIN
Sec_Write
Sec_Read
Sec_SCLK
Sec_SDOUT
Secondary
Access Port
PRBS_Out
PRBS_ErrDet
PRBS_In
PRBS_Clk
OverTemp
Sec_CS
A[143:0]
Y[143:0]
RESET
INIT
PARALLEL/SERIAL
CS
WR
RD
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