Arria® V Device Handbook: Volume 2: Transceivers

ID 683573
Date 5/29/2020
Document Table of Contents Frame Synchronizer

The frame synchronizer block achieves lock by looking for four synchronization words in consecutive metaframes. After synchronization, the frame synchronizer monitors the scrambler word in the metaframe and deasserts the lock signal after three consecutive mismatches and starts the synchronization process again. Lock status is available to the FPGA fabric.
Note: The frame synchronizer is only used in Interlaken configurations.