DESCRIPTION
The ACS8515 is a highly integrated, single-chip solution for hit-less protection switching of SEC clocks from Master and Slave SETS clockcards in a SONET or SDH Network Element. A further input is provided for an optional standby SEC clock. The ACS8515 can perform frequency translation from a SEC input clock distributed along a back plane to a different local line card clock, e.g. 8 kHz distributed on the back plane and 19.44 MHz generated on the line cards. An SPI serial port is incorporated, providing access to the configuration and status registers for device setup. The ACS8515 can utilise either a low cost XO oscillator module, or a TCXO with full temperature calibration - as required by the application. Block Diagram Line Card Protection Switch for SONET or SDH Network Elements FINAL FEATURES
Suitable for Stratum 3, 4E and 4 SONET or SDH Equipment Clock (SEC) applications Meets AT&T, ITU-T, ETSI and Telcordia specifications Three SEC input clocks, from 2 kHz to 15...
Semtech Corporation
