一种自适应时钟恢复方法

针对高速传输系统的接收端芯片去开销后的低功耗时钟产生问题，此部分电路最合适的工作时钟应为与有效数据速率相等的时钟频率，文中提出一种产生此时钟的方法。通过虚拟一个数据缓冲，以其缓冲的数据量的变化量作为频率偏差的标志，并以此为基础通过压控晶体振荡器对时钟进行调整。通过仿真证实，这种方法能实现时钟的调整，并能使前后时钟之间的真实数据缓冲区处于最安全的数据存量状态。

A Self-Adaption Clock Recovery Method

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.