关键词: 时钟恢复, VCXO, 时钟同步, 异步FIFO

Abstract:

In the high speed transmission system, the information in the transmission is composed of the data, the header information, the check information, etc. The the best clock for the circuit after decoding operation should be the real user data rate. This paper presents a method to recover the clock by using a fictitious FIFO and treat this FIFOs effective data quantity as the Frequency offset between the two clocks.Thus,we chen recover the clock. Simulation results show that this method can achieve the clock adjustment, and can make the real data buffer between the front and back circuit in the most safe data storage.

Key words: clock recovery, VCXO, clock synchronization, asynchronous FIFO