论文部分内容阅读
介绍了一种高速数据接收同步技术,用以解决在高速、超高速情况下数据同步困难的问题。随着电路工作频率的提升,数据的稳定有效周期变得越来越短,对采样时钟的时序要求也越来越高,特别是由于工艺波动、温度变化等原因,数据与时钟的相位关系发生变化,导致时钟采样时发生误码,电路不能正常工作。采用该数据接收同步技术,可以将时钟采样设置为最佳时序,并且当时钟与数据相位关系变化时,能自动对时钟相位进行调节,重新回到最佳时序,从而大大提高数据接收的可靠性。
A high-speed data reception synchronization technology is introduced to solve the problem of difficult data synchronization under high speed and high speed. As the working frequency of the circuit increases, the stable and effective data cycle becomes shorter and shorter, and the sampling clock timing requirements are also getting higher and higher, especially due to process fluctuations and temperature changes, the phase relationship between the data and the clock occurs Changes, resulting in a clock error when sampling, the circuit can not work properly. Using the data reception synchronization technology, the clock sampling can be set as the best timing, and when the clock and the data phase relationship changes, the clock phase can be automatically adjusted to return to the best timing, thereby greatly improving the reliability of data reception .