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OMAP1710 - Accessing audio codec from arm cpu

DISCUSSION Cyrille Chartrain 1 participant 2 messages Jun 11, 2007 – Jun 12, 2007

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I do not know the N80, but if the DSP is used, then your audio codec is probably connected to the DSP via the McBSP1, which is in the DSP domain. Accessing the audio samples via the ARM would be possible if McBSP2 is used instead of McBSP1 since McBSP2 is in the ARM domain. So without a HW modification, I do not see a possibility here.

Regards,

Cyrille

#1 lore raw
Quoted 8 lines · Cyrille Chartrain

I do not know the N80, but if the DSP is used, then your audio codec is probably connected to the DSP via the McBSP1, which is in the DSP domain. Accessing the audio samples via the ARM would be possible if McBSP2 is used instead of McBSP1 since McBSP2 is in the ARM domain. So without a HW modification, I do not see a possibility here.

Regards,

Cyrille

Correction: McBSP1 is accessible by the DSP but also by ARM according to the datasheet (this is not clearly written, but the McBSP registers section gives the MPU address for McBSP1).
So if you manage to stop the DSP execution, you might have a solution.
Sorry for the first wrong answer.

Cyrille