VSC3172
6.5 Gbps 72 × 72 Asynchronous Crosspoint Switch
GENERAL DESCRIPTION:
The VSC3172 is a 72 × 72 asynchronous crosspoint
switch, designed to carry broadband data streams.
The fully nonblocking switch core is programmed
through a multimode port interface that allows
random access programming of each input and
output port.
Each high-speed output is a fully differential switched current driver with
on-die terminations for maximum signal integrity. Its multimode
programming interface allows commands to be sent as serial data or as
multiplexed parallel data. Core programming can be sequential on a
port-by-port basis, or multiple program assignments can be queued and
issued simultaneously.
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.
VSC3172
A high degree of signal integrity is maintained throughout the device by
fully differential signal paths. Programmable input EQ and output
pre-emphasis settings enable maximum customization for the application.
Each data output can be programmed to connect to one of the inputs. The
signal path is unregistered and fully asynchronous, so there are no
restrictions on the phase, frequency, or signal pattern on any input.
B A C K P L A N E A P P L I C AT I O N :
Line Cards
OE
FPGA/
ASIC
B
a
c
k
p
l
a
n
e
Central Switch
VSC3172
S P E C I F I C AT I O N S :
6.5-Gbps NRZ per-channel data rate
2.5-V power supply (2.5-V or 3.3-V program port power supply)
2.5-V or 3.3-V CMOS TTL-compatible I/O
Differential CML I/O with integrated termination impedance
0 °C to 85 °C operating temperature range
Trademarks
Vitesse, ASIC-Friendly, FibreTimer, TimeStream, Snoop Loop, Super FEC, FOCUSConnect, Meigs-II, Meigs-IIe, Lansing, Campbell-I, Barrington,
PaceMaker, HOVCAT48, HOVCAT48e, HOVCAT192, HOVCAT192e, Micro PHY, FOCUS32, FOCUS16, IQ2200, NexSAS, VersaCAT, GigaStream, HawX,
SparX, StaX, VstaX, SimpliPHY,VeriPHY, ActiPHY, XFP PRO, SFP PRO, Smart-LINK, OctalMAC, EQ Technology are trademarks in the United States and/or
other jurisdictions of Vitesse Semiconductor Corporation. All other trademarks or registered trademarks mentioned herein are the property of their respective
holders.
Copyright © 2006
Vitesse Semiconductor Corporation (“Vitesse”) retains the right to make changes to its products or specifications to improve performance, reliability or
manufacturability. All information in this document, including descriptions of features, functions, performance, technical specifications and availability, is
subject to change without notice at any time. While the information furnished herein is held to be accurate and reliable, no responsibility will be assumed by
Vitesse for its use. Furthermore, the information contained herein does not convey to the purchaser of microelectronic devices any license under the patent
right of any manufacturer.
TM
741 Calle Plano
Camarillo, CA 93012, USA
Tel: +1 805.388.3700
Fax: +1 805.987.5896
www.vitesse.com
sales@vitesse.com
VITESSE [ VITESSE SEMICONDUCTOR CORPORATION ]
