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ADV7441A pixel errors on UXGA 162MHz

Question asked by damihi on Aug 20, 2010
Latest reply on Sep 17, 2010 by damihi

Hi all,

 

we have some troubles  with a new ADV7441A design: There are TMDS pixel errors, dependent on the frame content. This appears on 8/8 tested ADV7441A, some show more, some show less errors.

This appears at the highest DVI pixel clock (162MHz), with 152MHz it's all fine.

We tried the recommended settings for the Equalizer, with no effect in the right direction.

Board layout seems to be ok, distance between DVI connector and ADV is about 13mm only.

 

Does anybody have similar experiences and knows how to fix?

 

 

Best Regards,

 

Michael

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