AnsweredAssumed Answered

ADV7623 video flicker on 1080p output

Question asked by AndrewCogent on Dec 14, 2015
Latest reply on Dec 15, 2015 by mattp

Hello,

 

We have followed the reference design and are using the settings script:

##Scripts HDMI - PCM, For Pixel CLK Greater than 65MHz(less 10m Cable)##

:3-3 Port A Audio Pass Through Mode for 192KHz multi-channel PCM:

 

 

Our input source is CEA mode 16, 1920x1080

We see flicker occasionally, with random entire horizontal line flicking wrong color.

This flicker seemed to improve when we added the writes to the cable equalization in the script, vs without, using script:

 

##Scripts HDMI - PCM, For Pixel CLK Greater than 65MHz##

:2-3 Port A Audio Pass Through Mode for 192KHz multi-channel PCM:

 

The flicker is present also when input is removed and FreeRun base color is being displayed.

 

The flicker is not detected when using lower resolution video input.

Is what i describe indicative of an equalization problem or something else?

 

Are there other settings we can try?

 

Thank you,

 

Andrew

Outcomes