DS90UB925Q-Q1: I2S can be supported without valid video data and PCLK

user4779049

Hi Team,

Please advise me on the question bellow.

I am using DS90UB925 and DS90UB928 as a set to transfer video and audio data.
However, in some use case, no video and PCLK exist but want transfer only audio data.

I suspect that following two settings may realize this request.
What do you think of it?

(1) PCLK auto switchover is enabled and
(2) Enabling I2S Data Forward Channel Frame Transport

Mita

over 8 years ago

0 Palaniappan Manickam over 8 years ago

TI__Genius 10475 points

Hello,
We received your question and this has been assigned for someone to review and get back to you.

0 Darryl Jeong over 8 years ago

TI__Expert 4210 points

Hi Mita-san,
Yes no video data is needed for I2S to function.
1) is correct but make sure the PCLK input does not have noise or the 925 can think it has a PCLK
2) correct

Interface

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DS90UB925Q-Q1: I2S can be supported without valid video data and PCLK