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VSYNC problem when DM6437 connecting with TVP5158 decoder

Other Parts Discussed in Thread: TVP5158

Hi,

    I'm using TVP5158 decoder setup as 2 ch line-interleaved mode and capture image data through DM6437 VPFE( BT.656 mode).

and when I read the image data(YCbCr422 format) from DDR2, it look like this:

 

It will cause VSYNC problem when TVP5158 masked out the V bit in SAV, any solution for this kind of problem? thanks.