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ADV7441A:  Can we turn off VS signal in CP mode ?

Question asked by Vid123 on Mar 1, 2011
Latest reply on Mar 10, 2011 by Brigid

Hi all,

 

We have the chip connectd to a video with external CS on HS pin ( CUR_SYNC_SRC[1:0] = "10").  We config the ADV7441A using auto-graphics mode method.

 

 

The video coming from a system that it does strange behave, once a while (every 5 minutes or so) the VS signal generates some noise, or unknown waves

this cause  the image rolling vertical, as the chip still look at the VS pins for vertical sync (I guess VS pin is added (OR)  with the detected Vsync from CS) 

 

Is there anyway to shutdown the VS signal completely when we know the video is external CS?

 

Thanks,

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