ZL30402 - Zarlink Semiconductor Inc

ZL30402 SONET/SDH Network Element PLL

The ZL30402 is a Network Element Phase-Locked Loop designed to synchronize SDH and SONET systems. In addition, it generates multiple clocks for legacy PDH equipment and provides timing for ST-BUS and GCI backplanes. The ZL30402 operates in NORMAL (LOCKED), HOLDOVER and FREE-RUN modes to ensure that in the presence of jitter, wander and interruptions to the r.

Features

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• Meets requirements of GR-253 for SONET stratum 3 and SONET Minimum Clocks (SMC) Meets requirements of GR-1244 for stratum 3 Meets requirements of G.813 Option 1 and 2 for SDH Equipment Clocks (SEC) Generates clocks for ST-BUS, DS1, DS2, DS3, OC-3, E1, E2, E3, STM-1 and 19.44 MHz Holdover accuracy to 1x10 meets GR-1244 Stratum 3E and ITU-T G.812 requirements Continuously monitors Primary and Secondary reference clocks Provides “hit-less” reference switching Compensates for Master Clock Oscillator accuracy Detects frequency of both reference clocks and synchronizes to any combi.