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When is ADV7619 resolution stable?

Question asked by rmauro on Oct 11, 2017
Latest reply on Oct 16, 2017 by JeyasudhaMuthuPerumal

My customer would like to know the resolution of the input video after it switches.  To determine this they first check I/O address 0x6C for a value of 0x53 to see if the sync us stable.  Then they check HDMI addresses 0x07, 0x08, 0x09, and 0x0a for the width and height.  They find that if they check these registers too soon after the video switches the values will change on subsequent reads.  How long does it take to stabilize?  Is there a way to know if it is stable?   

 

Thank you in advance.

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