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Closing procedure of audio transfer

Hello.

I have a simple question about closing procedure of audio I/O.

The DSP Core is C6747 and I use McASP and EDMA to transmit and receive audio data.

The question is which should I stop first, McASP or EDMA?

Currently I close EDMA first, but there is a problem which is audio serial data stop asynchronously to the word clock. It causes a noise when DA converter take the broken datum.

Would McASP stop synchronously to the word clock if I stop McASP first? 

Please give me your advice.


Regards

Shintaro