DESCRIPTION
FINAL FEATURES
DATASHEET The device supports Free-run, Locked and Holdover modes, with mode selection controlled either automatically by an internal state machine or forced by register configuration. The ACS8522A accepts up to four independent input SEC reference clock sources from Recovered Line Clock, PDH network, and Node Synchronization. The ACS8522A generates independent SEC and BITS clocks, an 8 kHz Frame Synchronization clock and a 2 kHz Multi-Frame Synchronization clock, both with programmable pulse width and polarity. The ACS8522A includes a Serial Port, which can be SPI compatible, providing access to the configuration and status registers for device setup. The ACS8522A supports IEEE 1149.1 [5] Suitable for Stratum 3, 4E, 4 and SONET Minimum Clock (SMC) or SONET/SDH Equipment Clock (SEC) applications (to Telcordia 1244-CORE[19] Stratum 3 and GR-253[17], and ITU-T G.813[11] Options Ι and ΙΙ specifications). Accepts four individual input reference clocks, all wi...
Semtech Corporation
