Date: 12/02/2009

Fast synchronous Ethernet upgrade for existing carrier equipment

Zarlink Semiconductor expanded its Synchronous Ethernet portfolio with new solutions for timing card and line card applications. This single-chip solution ensures accurate end-to-end transmission of voice, video, data and wireless applications and services over packet networks.

Key features are listed below:

1. Zarlink is offering single-chip synchronous Ethernet solutions in compliance with the International Telecommunications Union (ITU-T) G.8262 recommendation, while supporting low jitter clocks for both 1 GbE and 10 GbE PHYs.
2. Zarlink's new timing card and line card solutions support both PDH/SONET/SDH and Synchronous Ethernet frequencies to offer interface between traditional and Ethernet clock domains.
3. The ZL-30143 Synchronous Ethernet timing card device provides two independent DPLLs for applications that require independent transmit and receive timing paths, while the ZL30142 device uses a single DPLL for clock and/or frame pulse synchronization.
4. Both devices require only a temperature controlled crystal oscillator to achieve full ITU-T G.8262 compliance, including low bandwidth wander filtering requirements.
5. The ZL30146 chip incorporates two independently configurable DPLLs for PDH/SONET/SDH and Ethernet network interface cards requiring both transmit and receive paths between the backplane and physical layer.
6. The ZL30145 provides one DPLL for clock synchronization, and delivers rate conversion and jitter attenuation compliant performance for Synchronous Ethernet, SDH and SONET equipment.
7. The devices require only 20 MHz oscillators or even a crystal.

Availability: Zarlink's new Synchronous Ethernet timing chips for timing card and line card applications are now in volume production.

For more information, visit the website: www.zarlink.com