there is a black gap at the top of image


Hi expert

       There is a black gap at the top of image when using a external Signal Generator(NTSC-M) .

However,image produced by chips(adv7282m 480P) themselves is 720x480 size is normal.

Please refer to the attached file to get detailed description.

I hope to get your help,thanks!

adv7282mdisplayissue.zip
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