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ADV7842 Auto Graphic mode

Question asked by Dre on Dec 15, 2010
Latest reply on Dec 17, 2010 by DaveD

When using the device in auto graphic mode the video resolution comes out wrong. For example, when using the RGB input resolution 1024x768 the measured DE active time is1033 pixels and a total of 792 lines. Also, many times the DE is not align with active video data.  The resolution/ alignment discrepancy happens mainly when in Auto Graphic mode. When programming the chip in Non Auto Graphic mode by using a video standards that is included in 7842, the resolution is always correct. Is there some settings that I am missing?

 

Thanks,

 

Andres R.

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