Zarlink Expands Synchronous Ethernet Timing Portfolio with New Single-Chip Gigabit Ethernet Line Card Synchronizer



    - ZL(TM)30107 analog/digital PLL (phase locked-loop) combines industry-
    leading performance and price to efficiently provide synchronization at
    the physical layer

    OTTAWA, March 1 /CNW Telbec/ - Zarlink Semiconductor Inc. (NYSE/TSX:ZL)
today expanded its family of Synchronous Ethernet timing solutions, with a new
single-chip Gigabit Ethernet line card synchronizer that allows service
providers to seamlessly and economically deliver time-critical applications
over packet-based networks.
    Available now, the ZL30107 chip provides timing and synchronization for
Ethernet line cards in next-generation networking equipment supporting circuit
services over IP-based architectures. Integrating independent analog and
digital PLLs, the device synchronizes with standard telecom and Ethernet
clocks and generates an IEEE 802.3 jitter compliant 25 MHz Gigabit Ethernet
output clock. Backed by Zarlink's leading timing and synchronization
expertise, no competing device can match the performance and level of
integration at the price point supported by the ZL30107 device.
    "Synchronous Ethernet is a key technology as service providers
aggressively seek new ways to more efficiently support time-sensitive
applications over packet networks," said Darren Ladouceur, marketing manager,
Timing and Synchronization, Zarlink Semiconductor. "Building on our
established synchronous Ethernet timing solutions, the ZL30107 chip allows
manufacturers to easily build timing capabilities into next-generation
networking equipment."
    Currently, service providers must operate a number of different networks
and deploy costly external mechanisms to support legacy services over IP
architectures. For example, network synchronization between remote MSAPs
(multi-service access platforms) are connected to central office equipment via
T1/E1 or SONET/SDH links.
    In comparison, synchronous Ethernet technology allows service providers
to deliver all services over a single converged, high-bandwidth, synchronous
Ethernet link.
    The ZL30107 device supports synchronous, holdover and asynchronous
free-run modes of operation. In synchronous operation, the ZL30107 PLL
replaces the free-running reference clock usually provided by an oscillator
with a network timing reference. The device accepts three references and
performs hitless reference switching. The integrated DPLL automatically
synchronizes to one of a pre-defined set of standard telecom frequencies
ranging from 2 kHz to 77.76 MHz in addition to 25 MHz. The chip generates a
very low jitter 25 MHz Gigabit Ethernet output clock.
    When all references fail the device automatically enters holdover mode
and continues to generate an output clock based on frequency data collected
from past reference signals.
    The chip defaults to asynchronous free-run mode, where the DPLL generates
an output clock with frequency accuracy equal to an external oscillator or
low-cost crystal. This allows equipment manufacturers to "build-in"
synchronous Ethernet capabilities in next-generation networking equipment.
Services providers can then easily enable synchronous Ethernet capability when
it is required.

    Synchronous Ethernet application note

    Zarlink and Marvell recently demonstrated synchronization over the
Ethernet physical layer using their respective PLL and Ethernet PHY
technologies. An application note outlining Zarlink-Marvell interoperability
is available online at:
    http://assets.zarlink.com/AN/ZLAN_211_AppNote_Jan07.pdf.

    Availability

    The ZL30107 chip is in volume production and offered in a 9 mm x 9 mm,
64-pin CABGA package. For more, visit
http://products.zarlink.com/product_profiles/ZL30107.

    Complete information on Zarlink's synchronous Ethernet timing technology,
including detailed application notes and data sheets, is available to
qualified customers. To learn how to become a qualified customer please send
an email to Timingandsync@zarlink.com. Alternatively, contact your local sales
representative.

    About Zarlink Semiconductor

    For over 30 years, Zarlink Semiconductor has delivered semiconductor
solutions that drive the capabilities of voice, enterprise, broadband and
wireless communications. The Company's success is built on its technology
strengths including voice and data networks, optoelectronics and ultra
low-power communications. For more information, visit www.zarlink.com.

    Shareholders and other individuals wishing to receive, free of charge,
copies of the reports filed with the U.S. Securities and Exchange Commission
and Regulatory Authorities, should visit the Company's web site at
www.zarlink.com or contact Investor Relations.

    Certain statements in this press release constitute forward-looking
statements within the meaning of the Private Securities Litigation Reform Act
of 1995. Such forward-looking statements involve known and unknown risks,
uncertainties, and other factors which may cause the actual results,
performance or achievements of the Company to be materially different from any
future results, performance, or achievements expressed or implied by such
forward-looking statements. Such risks, uncertainties and assumptions include,
among others, the following: rapid technological developments and changes; our
ability to continue to operate profitably and generate positive cash flows in
the future; our dependence on our foundry suppliers and third-party
subcontractors; order cancellations and deferrals by our customers; increasing
price and product competition; and other factors referenced in our Annual
Report on Form 20-F. Investors are encouraged to consider the risks detailed
in this filing.

    Zarlink and the Zarlink Semiconductor logo are trademarks of Zarlink
    Semiconductor Inc.




For further information:

For further information: Edward Goffin, Media Relations, (613) 270-7112,
edward.goffin@zarlink.com; Mike McGinn, Investor Relations, (613) 270-7210,
mike.mcginn@zarlink.com

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