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使用dvi输入,qe输出状态异常

Part Number: TFP401
Other Parts Discussed in Thread: TFP401A

外部使用dvi视频源,tfp401a和fpga之间串接33欧姆电阻连接,通过fgpa抓取信号。发展输出的24bit中有很多bit输出与视频源输入的数据不一致。降串接电阻断开后直接用示波器量tfp401a的输出,发展也不正常,与fpga抓取的现象一致,请问哪位知道是什么原因吗?同步信号和de信号正常,时钟正常