AnsweredAssumed Answered

Color Controls do not work for ADV7842

Question asked by Hakob on Apr 8, 2015
Latest reply on Apr 17, 2015 by Hakob

Hi,

 

I am trying to do video adjustments (hue, saturation, brightness, contrast) by using color controls available for ADV7842.

 

For that I do the following steps :

 

1. Manually setting CP SCS (address 0x68) register for CP MAP :

 

0x68  1111000

A control to select the mode the CP CSC operates in.

0000 - CP CSC configuration in manual mode

1111 - CP CSC configured in automatic mode

xxxx - Reserved

 

2. Manually enabling CP SCS register(address 0x69)

0x69 00000100

A control to manually enable the CP CSC. By default the CP CSC will be automatically enabled in the case that either a color-space conversion or video-adjustments (Hue, Saturation, Contrast, Brightness) is determined to be required due to other I2C settings. If MAN_CP_CSC_EN is set to one the CP CSC is forced into the enabled state.

0 - CP CSC will be automatically enabled if required. For example if either a color-space conversion or video-adjustments (Hue, Saturation, Contrast, Brightness) is determined to be required due to other I2C settings.

1 - Manual override to force CP-CSC to be enabled

 

3.Manually setting VID_ADJ_EN, Addr 44 (CP), Address 0x3E[7] to 1 in order to enable color controls.

 

As a result I do not have any of the mentioned color controls enabled.

 

Do I miss something ? Are any additional steps required to get it work ?

 

Thanks,

Hakob

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