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Is it possible to disable free-run mode of ADV 7181D ?

Question asked by emeric.l on Oct 12, 2017
Latest reply on Oct 13, 2017 by JeyasudhaMuthuPerumal


We are developing a product using ADV7181D.

What we want is that the ADV stops sending video data when there is no video input signal.

We tried differents settings and the ADV is always freerunning when there is no input signal.
The only case when the ADV doesn't send video on the bus is when the ADV started without input signal. This is normal as the freerun mode needs to know video characteristics of the input to send a pattern with the same characteristics.


We achieved this goal with an ADV7842 but the product we are developing only uses 7181D.

Any hint for this problem ?




PS: I've already downloaded design support files and read the datasheet manual rev D.

 By reading the manual I have found nothing that clealy states that the freerunning mode can be disabled.