关键词: 盲过采样, 时钟数据恢复, 鉴相编码电路

Abstract: This is a improved blind oversampling clock and data recovery circuit.The circuit mainly contains parallel oversampling module,filtering and shaping circuit,phase detector and encoding circuit,data selection module.The filtering and shaping circuit can effectively improve the mutations in the sampling data stream,so that the circuit has a higher abilityto suppress noise and disturbing,combined with phase detector and encoding circuit,the clockanddata recovery circuit can get a lower BER and shorter phase-locking time.

Key words: blind oversampling, clock and data recovery(CDR), phase detector and encoding circuit