Line Card Synchronizer offers Ethernet timing solutions.

Press Release Summary:

Offered in 9 x 9 mm, 64-pin CABGA package, ZL(TM) 30107 single-chip Gigabit Ethernet line card synchronizer provides timing and synchronization for Ethernet line cards in networking equipment, and supports synchronous, holdover, and asynchronous free-run modes of operation. Integrating independent analog and digital PLLs, device synchronizes with standard telecom and Ethernet clocks and generates IEEE 802.3 jitter compliant 25 MHz Gigabit Ethernet output clock.

Original Press Release:

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 / -- 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:


The ZL30107 chip is in volume production and offered in a 9 mm x 9 mm, 64-pin CABGA package. For more, visit

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 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

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 or contact Investor Relations.


CONTACT: Edward Goffin, Media Relations, (613) 270-7112,;

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