This application note gives some decoupling guidelines, loop-filter requirements, and CM_SER pin requirements for the CYS25G0101DX OC-48 SONET Transceiver.
Introduction
The CYS25G0101DX SONET/SDH OC-48 transceiver is a communications building block for high-speed SONET data communications. The CYS25G0101DX provides complete parallel-to-serial and serial-to-parallel conversions, clock generation, and clock and data recovery operations in a single 120-pin 14-mm x 14-mm TQFP package.