MC Audio platform issue with AN00162/AN00202

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MikeColeLSU
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MC Audio platform issue with AN00162/AN00202

Postby MikeColeLSU » Fri May 12, 2017 2:05 am

I have built both application notes with no changes made from XMOS provided code and flashed them, one at a time, onto the MC Audio platform.

When AN00162 is flashed, only analog inputs 1-2 and outputs 1-2 pass audio. No other ports pass audio.

Similarly, when flashing AN00202, only analog inputs 1-2 pass audio, with no analog outputs passing audio. Additionally, in multitrack recording software (reaper), the device is seen as an 8 channel device, however, the audio from inputs 1-2 appears when selecting any of the 8 inputs as source in the DAW. All AVB functionality seems to be functioning correctly.

I suspect that my unit may be damaged but wanted to do an idiot check first before calling XMOS. Any ideas?
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akp
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Postby akp » Fri May 12, 2017 12:27 pm

I haven't used AN00202 much (if at all) but I have used AN00203 which is the TDM version (rather than I2S version) without problem with channel counts of 8 - 32 ch.

One thing you might want to look at is the J7 and J8 jumpers to make sure they are set in I2S (arrow) setting and not TDM setting.
MikeColeLSU
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Postby MikeColeLSU » Fri May 12, 2017 10:23 pm

Wow!!! what a simple thing to overlook. The jumpers were set in the TDM position. Thank you very much.
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akp
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Postby akp » Mon May 15, 2017 12:16 pm

Glad it worked for you. Hope you have good luck with your project.

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