NETWORK PRODUCTS
VSC7104, VSC7108
VSC7104 – Quad Signal Conditioner, VSC7108 – Octal Signal Conditioner
BENEFITS:
Enables Operation at Higher Data Rates and/or Improves Operating Margins
Controls Difficult Signal Integrity Problems
Asynchronous Operation Allows Application Across any Data Format and Rate
Low Skew Enables Precision Fan-out Buffering
S P E C I F I C AT I O N S :
0 to 6.5 Gbps Data Rate
20ps Added Jitter
20ps Channel to Channel Skew
A P P L I C AT I O N S :
2.5V Power Supply with a 3.3V Option
Backplane Signal Enhancement
50ps Output Rise/Fall Time
Wideband Signal Clean-up
50Ω Output Source Termination
Line Driver/receiver
100Ω Input Differential Termination
F E AT U R E S :
High Data Rate Support, up to 6.5 Gbps
Integrated Equalization
Global Programmable Input Signal Equalization (ISE) and
Output Drive Levels
Soft Power-down for Unused Channels
Compact Form Factor
Single Supply Operation
Highly Programmable
Robust Operation Across Voltage and Temperature
Fully Asynchronous Operation
Excellent Crosstalk and Noise Immunity
Input EQ Control
Output Pre-emphasis Control
250mW Per Channel Power Dissipation
100mV – 2400mV Input Signal Range
550mV – 1100mV Programmable Output Swing
VSC7108 BLOCK DIAGRAM:
EQ
Differential
Input
EQ
Differential
Output
Control I/F
.
PB-VSC7104,7108-001
VSC7104,VSC7108
VSC7104 – Quad Signal Conditioner, VSC7108 – Octal Signal Conditioner
GENERAL DESCRIPTION:
The VSC7108 and VSC7104 are Signal
Conditioners designed to carry broadband
data streams, enabling next generation
backplane designs and extending the life
of existing backplanes. The function of
these devices is simple yet powerful,
creating multiple applications just about anywhere high-
speed signals are present.
The integrated equalization capabilities at both the input and
output effectively absorb the effects of signal loss through
copper interconnect, either printed circuit board traces or
cable. A high degree of signal integrity is maintained
throughout the chip by fully differential signal paths. The
signal path is unregistered and fully asynchronous so that
there are no 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.
Signal Conditioning Application
Lossy Backplane
ASIC
7108
7108
ASIC
Cable
Serial Repeater as a Multiple Rate/Multiple Protocol Serializer with Signal Clean-Up
1.25Gbps
2.5Gbps
VSC7104
1.25Gbps
2.5Gbps
VSC7104
HSSDC2 CX-4
4x1.0 - 4.25Gb/s
.
4x1.0 - 4.25Gb/s
.
VSC7104
3.125Gbps
4.25Gbps
3.125Gbps
4.25Gbps
ASIC/FPGA
with Integrated
SerDes
4x1.0 - 4.25Gb/s
.
VSC7104
4x1.0 - 4.25Gb/s
.
Copper Cable
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
Vitesse, ASIC-Friendly, FibreTimer, TimeStream and Snoop Loop are trademarks of Vitesse Semiconductor Corporation.
All other trademarks or registered trademarks mentioned herein are the property of their respective holders. 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.
741 Calle Plano
Camarillo, CA 93012, USA
Tel: +1 805.388.3700
Fax: +1 805.987.5896
www.vitesse.com
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