We got a problem when using ADV 7180 for video decoder. As shown in FIG.1 all the parameters are assigned according to the recommends ones, except the first register, because all the input videos are PAL.
Most times it works well, but one time we got a result like in FIG.2. In the middle of the image we got a black band, the up-part and the bottom-part seems to be reversed.
When it failed, the value for ad-result is ‘011’ instead of ‘100’. Can anyone tell me the possible reasons?