Mity CPU Platforms » MitySOM-AM57X

Hi Tay,

Have you tried the commands listed here?

https://support.criticallink.com/redmine/projects/mitysom_am57x/wiki/Example_audio_line

-Mike

The 57x devkit audio input was hooked up as a Line Input. See the snippet from the datasheet.

According to the TLV320AIC3104 datasheet, to support a mic in, it should be hooked up like

If you wanted to mod the devkit, it looks like you could remove R227 and add a resistor from the same pin to the MICBIAS.

Scratch that, the input is connected to Line2 and is set up for Stereo input so the datasheet example I included above doesn't apply. I added a section to the wiki to modify the board for microphone in. Please let me know if you try it and if any additional modifications are necessary.

https://support.criticallink.com/redmine/projects/mitysom_am57x/wiki/Example_audio_line#Mic-In

Hi Mike,

Thanks for replying. I will check that functionality as soon as I can and will let you know if there are any issues.
In the mean time do you have any advice on powering a headset/microphone that requires phantom power?

Tay Barrett wrote in RE: Development Kit Microphone Input Capture:

Hi Mike,

Thanks for replying. I will check that functionality as soon as I can and will let you know if there are any issues.
In the mean time do you have any advice on powering a headset/microphone that requires phantom power?

I don't think we've dealt with phantom-powered mics before. I'd guess you could use something like this, https://www.amazon.com/Neewer-1-Channel-Microphone-Condenser-Recording/dp/B014H8AWGC for development. And google has many results on what a phantom power supply schematic would look like for a final design.