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ADV7604 Analog Component video standard selection logic.

Question asked by BrianG on Aug 18, 2011
Latest reply on Oct 7, 2011 by DaveD

Hi,

     I have a ADV7604 setup with 2x 3 wire Component inputs.  I have no trouble manually setting the video standard to match my video source & produce a good sampled video.

 

     My analog video source has the random possibility of being 1 of 6 modes, 525i, 625i, 525p, 625p, 720p & 1080i.  (Note that I do not wish to support other formats when opperating in component mode...)   What would be a good minimal I2C scanning 'logic' of selecting the right input 'VID_STD' when the source video may randomly hop to another one of the 6 modes I listed at any unknown time?

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