Can we make ADV7626 just pass the AV mute ON bits to sink without sending black video out?

Hello,

I saw ADV7626 always sent out the black video when it received the GCP with AV_MUTE_ON bits from the source device. Is there any register in ADV7626 we can use, which, let ADV7626 just pass the AV Mute bits out to sink but do not mute/un_mute the output video to sink?

I compared two EVA boards by connecting with same source device and same sink, they were working in are different ways:

1) The ADV7626 EVA board sent black video out when it received GCP with AV_MUTE_ON from source device, but the AV_MUTE ON bits were not passed to sink.

2) The ADV7850 EVA board didn't send black video out when it received GCP with AV_MUTE_ON, but the AV_MUTE_ON bits were passed to sink.

Is it possible the ADV7626 can be configured to work in the same way as ADV7850 does with the AV_MUTE bit settings?

Thanks,

Leon Zhang