Vitesse Delivers Second Generation Electronic Dispersion Compensation ICs for 10 GbE Fiber Applications

Vitesse Semiconductor Corporation (Pink Sheets:VTSS) today
announced the release of its next-generation Dual Clock and Data
Recovery (CDR) integrated circuits with integrated Electronic
Dispersion Compensation (EDC), the VSC8240 and VSC8242.

Devices offering EDC are essential to enabling 10 GbE
implementations across multiple applications in Enterprise, Metro and
Core networks including those using SFP+ optical interconnects, XFP
optical interconnects, 10G NICs, 10G copper interconnects, and 10G
copper backplanes.

These new, low-power, EDC devices evolve from Vitesse´s
first-generation EDC technology, the VSC8238, which is the solution of
choice for optical module suppliers of 10GBASE-LRM in the X2 form
factor. X2 is the dominant optical module for 10 GbE shipments today.
The 10GBASE-LRM standard, enabled by the VSC8238, has allowed
deployment of 10 GbE solutions with low-cost legacy multi-mode fiber
in Enterprise networks.

"Vitesse EDC technology has been accepted as the gold standard in
the industry and has been attributed to enabling the quick ramp-up of
10GBASE-LRM deployment," said Tony Conoscenti, vice president, product
marketing for Vitesse. "Vitesse has shipped 50,000 ports of VSC8238
for 10 GbE applications. Now, we have moved our EDC technology into
lower power CMOS. This new product doubles the integration and reduces
power consumption by 50 percent. It will substantially reduce the cost
of deployment of 10 GbE across the optical Enterprise and Metro
service transport networks."

Enabling SFP+ Applications

10 GbE port shipments are anticipated to top the one million mark
in 2009, according to the latest edition of Light Reading´s Components
Insider. Lower cost, lower power and higher port densities are driving
SFP+ to become the predominant optical module format of these new
platforms. The lead application for the VSC8242 is enabling the
migration of datacom and telecom routers and switches to the SFP+
optical module form factor. Three SFP+ reach applications have been
standardized for 10 GbE networks: 10GBASE-SR, -LR and -LRM. The
VSC8242 supports all three applications and has compliance with IEEE
standards: 802.3aq, 802.3ae, and SFF-8431 electrical specifications.
This functionality allows existing module designs to quickly,
seamlessly and cost-effectively migrate to the SFP+ form factor.

The VSC8242 incorporates two bi-directional 10 Gbps paths to
support the increased port densities. Additional features of the
VSC8242 include various lookbacks, a complete set of programmable Rx
and Tx path functionality, such as output pre-emphasis, and full 1 GbE
data rate support. Packaged in a small 12mm by 12mm flip-chip CSP
package, the VSC8242 has an integrated microcontroller to enable auto
adaptation of dispersed optical signals. Typical power dissipation is
only 750mW for each bi-direction channel.

Successful interoperability testing of the VSC8242 with SFP+
optical modules from leading vendors has provided the broadest
collection of real life system application data available in the
industry with coverage for all three applications: SR, LR, and LRM.
Fully autonomous convergence code has been released to Vitesse´s
Enterprise customers and module partners.

A single channel variant, the VSC8240, is also available in an 8mm
by 8mm flip-chip CSP package. The VSC8240 has all of the functionality
of the VSC8242, but is targeted at XFP CDR applications and other
single receive path applications such as single mode fiber reach
extension applications in metro and long haul transport systems. The
VSC8240 compensates for both SMF chromatic dispersion (up to
2400ps/nm) and polarization-mode dispersion (over 70ps
differential-group delay) in a poor OSNR environment and will enable
the adoption of 120Km, 160Km, and longer applications.

Vitesse´s market-leading EDC technology is part of a complete line
of physical layer and switching products covering 10 GbE and SONET/SDH
applications for Carrier Ethernet and optical transport networks.

About Vitesse

Vitesse designs, develops and markets a diverse portfolio of
high-performance, cost-competitive semiconductor solutions for
communications networks worldwide. Engineering excellence and
dedicated customer service distinguish Vitesse as an industry leader
in Gigabit Ethernet LAN, Ethernet-over-SONET, Fibre Channel, Optical
Transport, and other applications. Vitesse innovation empowers
customers to deliver superior products for Enterprise, Access, Metro,
and Core applications. Additional company and product information is
available at www.vitesse.com.

Vitesse is a registered trademark 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.

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