ZL30410
Description
The ZL30410 is a Multi-service Line Card Phase-Locked Loop designed to generate multiple clocks for SONET, SDH and PDH equipment including timing for ST-BUS and GCI interfaces. The ZL30410 operates in NORMAL (LOCKED), HOLDOVER and FREE-RUN modes to ensure that in the presence of jitter and interruptions to the reference signals, the generated clocks meet international standards.
Key Features
- Generates clocks for OC-3, STM-1, DS3, E3, DS2, DS1, E1, 19.44 MHz and ST-BUS Meets jitter generation requirements for STM-1, OC-3, DS3, E3, J2 (DS2), E1 and DS1 interfaces Compatible with GR-253-CORE SONET stratum 3 and G.813 SEC timing compliant clocks Provides “hit-less” reference switching Detects frequency of both reference clocks and synchronizes to any combination of 8 kHz, 1.544 MHz, 2.048 MHz and 19.44 MHz reference frequencies Continuously monitors both references for frequency accuracy exceeding ±12 ppm Holdover accuracy of 70x10 -12 meets GR-1244 Stratum 3E and ITU-T G.812 requirements Meets requirements of G.813 Option 1 for SDH Equipment Clocks (SEC) and GR-1244 for Stratum 4E and Stratum 4 Clocks 3.3V power supply Ordering Information ZL30410QCC 80 Pin LQFP November 2003 -40°C to 85° C
- Clock generation for ST-BUS and GCI timing
