Date: 25th July 2011
Multi-protocol, 4-channel extender operates
up to 14.1Gbps consuming 100mW/channel
Vitesse Semiconductor Corporation has announced the VSC7224,
a multi-protocol, adaptive quad channel extender operating
with data rate range from 155 Mbps to 14.1 Gbps and power
consumption as low as 100mW per channel using in a variety
of network equipment targeting support for next-generation
protocols such as 10G/40G/100G Ethernet, Infiniband FDR,
and 16G Fibre Channel.
Vitesse says VSC7224 featuring its proprietary adaptive
FlexEQ technology and delivers the hardware-based equalization
suite, capable of equalizing multiple 14 Gbps signals over
ranges greater than 65 inches of FR4 board trace or 20m
of 24AWG twin-ax copper cable. Unlike competitive solutions,
the VSC7224 has four Decision Feedback Equalizer (DFE) taps
to combat impairments in the signal from crosstalk and reflections,
achieving an Isolation to Crosstalk Ratio (ICR) of better
than 12dB, as per Vitesse. The hardware-enabled adaptive
receiver on the VSC7224 eliminates the arduous process of
manually optimizing each individual lossy channel. With
the benefit of the adaptive receiver, together with Vitesse's
renowned VScope embedded waveform viewing technology, total
system design time can be reduced by an estimated 30% compared
to using manually optimized solutions, says Vitesse.
"The combination of autonomous adaptive equalization
and a Clock & Data Recovery (CDR) unit that can be used
at multiple speeds to effectively reset the jitter budget,
makes this channel extender extremely useful for next-generation
systems, especially to reduce system design time and improve
yields," said Abhi Dugar, research manager, wired communications
semiconductor research at IDC. "As networks move to
mixes of Ethernet, Infiniband, and Fibre Channel, it becomes
increasingly important to design for multiprotocol environments
operating at a variety of rates."
VSC7224 can operate in either re-driver (without a CDR)
or re-timer modes enabling the user to re-time the incoming
signal with a CDR, or run it in re-driver mode to reduce
system power. The VSC7224 can be controlled through the
two-wire interface for maximum programmability, or pin strapped
to reduce system complexity and eliminate the cost of an
external microcontroller.
"Throughout its history Vitesse has been at the forefront
of solving critical signal integrity issues," said
Kinana Hussain, product-marketing manager at Vitesse. "The
VSC7224 solves the challenge of compensating for signal
degradation in difficult network environments. Its power
savings, ability to run to 14 Gbps, and suitability in multiple
applications allows OEMs to easily balance requirements
for high performance and reliability with lower system costs
and lower power."
Available: Now in samples.
Package: 5 x 9 mm QFN
For more information visit: www.vitesse.com
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