Generating continuous frame clock on SAI interface of iMX8M

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Generating continuous frame clock on SAI interface of iMX8M

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ani10c89
Contributor II

Hi,

We are using SAI3 interface of iMX8M to connect to Audio transceiver. Audio transceiver has requirement of continuous Frame Sync clock (TXFS) on I2S interface. Can you please let us know how to get continuous clock on TXFS pin of SAI3 interface in iMX8M.

Regards,

Anirudha

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markruthenbeck
NXP Pro Support
NXP Pro Support

Anirudha,

Is there a problem with the SAI or are you asking a "how to" question?

mark

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ani10c89
Contributor II

Hi Mark,

I am asking How to generate continuous clock on Frame Sync Signal on SAI3.

Regards,

Anirudha

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markruthenbeck
NXP Pro Support
NXP Pro Support

Aniruda,

I am still not quite clear on the question. when the 8M is the master, the clock and frame sync are operational when the device is xmitting data. as soon as the data stops, the clocks also stop.

to keep the clocks running, you will need to xmit something like a "digital mute" which would be just zeros.

thanks,

mark

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