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TFP410输出视频后级TFP401无法解码还原!

Other Parts Discussed in Thread: TFP401, TFP401A

前端CMOS相机输出1412x876 50hz的视频,经过FPGA产生1024x768 50HZ视频(VS,PCLK采用CMOS相机的输出,HS、DE根据1024x768分辨率进行计数产生),转换为DVI传输后送至后级TFP401进行图像解码还原,用示波器测量TFP401还原出来的VS,HS,以及DE信号,发现这些信号噪声很多,而还原出来的像素时钟PCLK挺好,不知道为什么?根据相关资料采取措施如下:50欧并联端接,小电阻串联端接,差分线间接小电阻,问题依然无法解决,希望高手给些建议!!!

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