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HMDI audio clock jitter

Question asked by flatmax on Feb 12, 2016
Latest reply on Feb 16, 2016 by JeyasudhaMuthuPerumal

Hi there,

I am interested in using your HDMI transmitters and receivers in some of our products. However our products require low jitter audio clocks.

 

I have looked at the various data sheets for your HDMI transmitters (like your adv7511) and your HDMI receivers (like your adv7612).

There is no detail on the audio processing block in the data sheets. My understanding is that the HDMI audio data is transmitted between frames. This suggests that the receiver has to reconstruct the clocks from packets bursts. What is the expected jitter on the audio clock of the receiver ?

 

I am concerned that if I generate my clocks with verly low jitter before using the transmitter, then the receiver will reconstruct the clocks with jitter ... can you confirm whether this is correct ?

 

Is there a way to remove the jitter on the receiver side ?

 

thanks

Matt

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