Can ADV7611 provide Audio Serial Clock and Audio Left/Right Clock on SCLK and LRCLK pins, when there is no Audio present in HDMI input to the ADV7611? If yes, can you please point us to the relevant document and section.
The audio clock is derived from TMDS clock. I believe that if you have HDMI input with audio data then it would generate the same. Please refer HDMI specification audio sample clock capture and regeneration for more details. Also refer audio clock section from ADV7611 reference manual which is available at ADV7611 Design Support Files
Meanwhile, do you have one of our evaluation boards for ADV7611?
How do you configure the board either through script or through software driver?
Are you looking for any specific script from ADV7611 design support files?
Can you please respond to the above query, as we need to align on the design requirements.
Thanks for the reply.
We understand that ADV7611 can provide audio clock/data output when there is Audio present in input TMDS signals.
However, can ADV7611 provide Audio output clocks even when the input TMDS signals carry only video data and audio is not present?
We do not have any ADV7611 EVM. We have earlier used ADV7612 in one of the custom designs in which I2C Read/Write is performed using a Processor through software driver. Now, we are working on a new design, in which we are planning to use ADV7611. We are not looking for any script/ We need to understand the capability of ADV7611 in a specific use case, when HDMI input data contains only video.
Can someone please respond to the above query?
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