®PRODUCT BRIEF
VSC3104
VSC3108
www.vitesse.com
APPLICATIONS
• Backplane driver/receiver
• Loop-back switch
• Protection switching
• Fan-out buffering
• Cable driver/receiver
• Wire re-ordering
SPECIFICATIONS
• 0 to 6.5 Gbps data rate
• 20ps added jitter
• 10ps channel to channel skew
• 2.5V power supply with a 3.3V option
• 50ps output rise/fall time
• 50Ω output source termination
• 100Ω input differential termination
• 250mW per channel power dissipation
• 100mV – 2400mV input signal range
• 550mV – 1100mV programmable
output swing
The VSC3104 is a 4x4 Crosspoint Switch with
Integrated Equalization
The VSC3108 is a 8x8 Crosspoint Switch with
Integrated Equalization
Making next-generation networks a reality.
The VSC3104/3108 are multipurpose switching devices that are
designed to enable next generation backplane designs, and extend the
life of existing backplanes. 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.
The function of the VSC3104/3108 is simple, yet powerful, creating
multiple applications just about anywhere high-speed signals are
present. The fully broadband, non-blocking and multi-cast capable
switch core allows the VSC3104/3108 to be congured as a 1:4/1:8
fan-out buffer with very low channel-channel skew, or as a 4/8 channel
signal reconditioner.
Signal Conditioning Application:
Lossy Backplane
Cable
CISACISA
Txcvr
Txcvr
Line
Processing
East
West
Signal Switching/ R outing Application:
Loopback/
Failover switch
VSC3104
3108 3108
VSC3104
VSC3108
Vitesse Semiconductor Corporation
741 Calle Plano • Camarillo, CA 93012 USA • Tel: +1.800.VITESSE • +1.805.388.3700 • Fax: +1.805.987.5896 • www.vitesse.com
Benets
• Enables operation at higher data rates and/or
improves operating margins
• Controls difcult signal integrity problems
• Asynchronous operation allows application across
any data format and speed
• Low skew enables precision fan-out buffering
Related Vitesse Products
Visit www.vitesse.com for information about other
related Vitesse products.
Features
• High data rate support, up to 6.5 Gbps
• Integrated equalization
• Low cost
• Compact form factor
• Single supply operation
• Highly programmable
• Robust operation across voltage and temperature
• Fully asynchronous operation
• Excellent crosstalk and noise immunity
© 2003 by Vitesse Semiconductor Corporation. VPPD-00323 Revision 1.0. All Rights Reserved. Products and specications may change at any time without notice and Vitesse assumes no for responsibility
the information provided herein.
VSC3108 Block Diagram:
Programming Interface
PRBS
Generator/Detector
Switch Configuration Register
Switch Core
Y[7:0] VSC3108
A[7:0] VSC3108
RESET
ADDR[5:0]
DATA[3:0]
PRBS_OUT
PRBS_ERR
PRBS_IN
PRBS_CLK
WR
RD
Input Signal Equalization (ISE)
Output Level Control
and Pre-Emphasis