OMAP-L138: What value do I have to set a EDMA PaRAM ACNT when I use McASP AFIFO?

Part Number:OMAP-L138

Hi Champs,

Do I have to set the ACNT to be equal to or greater than McASP WFIFOCTL.WNUMEVT when I enable the AFIFO?
What will happen if I set the ACNT to be less than the WNUMEVT?

I'd like to make sure of it.

Regards,
j-breeze