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ADS850的CMOS数据传输接口

Other Parts Discussed in Thread: ADS850, SN74AHC541

之前把ADS850的数据接口和时钟信号通过FPC线连接至FPGA,发现当FPC线缆大于5cm(10cm,12cm,15cm)时,采样值为01 1111 1111 1111到10 0000 000 0000附近翻转时,会导致丢位,错位现象。采样值为其他值时,系统正常工作。线缆为5cm时,系统采样任何值都正常。

后添加SN74AHC541作为CMOS数据接口缓冲,但没添加串联限流电阻,发现无任何改善。

请问该问题根源是否在FPC线缆,有无解决办法?谢谢!