ACS8520中文资料同步设备定时源（套）为3/ 4E／4和SMC系统数据手册Semtech规格书

特性 Features

·Highly integrated single-chip solution for the synchronous equipment timing source (SETS) function in a SONET or SDH network
·Suitable for Stratum 3, 4E, and 4, and SONET minimum clock (SMC) or SONET/SDH equipment clock (SEC) applications
·Meets specifications·Telcordia (Bellcore) 1244-CORE
·Stratum 3
·GR-253
·ITU-T G.813 Options I and II

·Accepts 14 individual input reference clocks, all with robust input clock source quality monitoring
·Simultaneously generates nine output clocks, plus two sync-pulse outputs
·Absolute holdover accuracy better than 3 x 10-10 (manual), 7.5 x 10-14 (instantaneous); holdover stability defined by choice of external XO
·Programmable PLL bandwidth, for wander and jitter tracking/attenuation, 0.1 Hz to 70 Hz in 10 steps
·Automatic hit-less source switchover on loss of input
·Phase transient protection and phase build-out on locked-to reference and on reference switching
·Microprocessor interface·Intel
·Motorola
·Serial
·Multiplexed
·Boot from EPROM

·Output phase adjustment in 6 ps steps up to ± 200 ns
·IEEE 1149.1 JTAG boundary scan
·Single 3.3 V operation; 5 V tolerant
·LQFP-100 package
·Lead (Pb) - free version available (ACS8520T), RoHS and WEEE compliant.