【作者】 李牧冰； 刘国满； 谢民；

【Author】 LI Mubing;LIU Guoman;XIE Min;School of Information and Electronics,Beijing Institute of Technology;

【机构】 北京理工大学信息与电子学院；

【摘要】 在高速数据传输系统中,硬件布线长度的差异,及器件的不理想因素,会导致一组数据与时钟信号之间的相对延迟不同,造成信号线发生位偏移,数据接收不正确。针对以上问题,提出了一种基于FPGA的动态校准方法,根据数据线状态,动态增加或减少相对延迟,可实现数据的位对齐。该方法在高速数据采集系统中进行了验证,能够保证数据传输的正确性,且稳定可靠。更多还原

【Abstract】 In high-speed data transmission system,the length difference of hardware routing and the factor that device is not ideal will cause that the relative delay between data and clock signal is different.This may lead to the position of signal line offset and receive wrong data.To solve these problems,a dynamic calibration method which is based on FPGA is proposed.According to the status of data lines,this way can increase or decrease the delay of data lines dynamically,and finally achieves data bit alignment.This method has been verified on the high-speed data acquisition system.The test results show that this method can guarantee accuracy of data transmission,and it is stable and reliable.更多还原