Zhu Jianping, Li Wenyao. Design and implementation of an FPGA-based PCM frame synchronization detection and alarm system[J]. 2008,(2):11-13. DOI: 10.13756/j.gtxyj.2008.02.001.
Frame synchronization is an important part of PCM equipment.In this text
a synchronous state machine-based frame synchronization detection circuit is designed
which has front and rear protection for frame synchronization and protection for CRC multi-frame synchronization
greatly reducing the probabilities of leak and false synchronizations and providing CRC error detection.It can be integrated into one FPGA chip and used for the frame synchronization and timing in the receiver side of digital communication systems.