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TAA5242: How to use TAA5242EVM to recorde aduio?

Yuxi Liu(Tony)
Expert 3210 points
Part Number: TAA5242

Tool/software:

Hi TIer

I use TAA5242 EVM to test. Do you know how to use EVM to recorde aduio? I already download the PPC3 and I didn't find the SW-APP of TAA5242 on ti.com . Becasue the TAA5242 are hardware control , so how do we test the EVM by GUI? Please give me some suggestion. 

Thank you very much. 

  • 0
    TI__Genius 12925 points

    Hi,

    Sorry about the delay. The hardware controlled EVM should work by configuring the MDx pins shown starting on page 10 of the EVM user guide: https://www.ti.com/lit/ug/slau904a/slau904a.pdf . There is no PPC3 config for this device since PPC configures a device via I2C, but these hardware controlled devices do not take I2C data for the control, it is just configured via setting the hardware pins.

    Once the pins are configured, power can be applied to the device externally or with USB and then you can test audio with your input/output interface that you would use for any other audio codec. The AC-MB supports audio over USB as well with the switches on the AC-MB.

    Let me know if you have more questions.

    Best,
    Mir

  • 0 in reply to Mir Jeffres
    TI__Expert 3210 points

    Hi

    I wonder if there will be a GUI interface in the PPC3 to help me obtain the audio data from the EVM's microphone after I connect the AC-MB? I hope to collect the data from the EVM's microphone on my computer for analysis. I didn't see the relevant GUI in the PPC3 software.

    It looks like the J75 of the EVM board is not soldered, but I need to configure, so I'm wondering if it's if I don't need to configure MD5 or if it's a soldering error.

  • 0 in reply to Yuxi Liu(Tony)
    TI__Genius 12925 points

    Hi Tony,

    No GUI for getting audio data this way, but I would recommend using Audacity or a DAW of your choice to record audio data over USB. If you need help configuring your Audacity I can help there as well. I'm not sure why J75 is not soldered, can you send a picture? You will need MD5 for configuring the differential vs single ended input.

    Best,
    Mir

  • 0 in reply to Mir Jeffres
    TI__Expert 3210 points

    Hi Jeffres

    I can use Windows system build-in recording app to see the waveform when I connect the EVM use on board MEMS mic.

    Could you help me check the configurtion if it is correct?

    Also，I see that the amplitude of the sound is too low, where can I adjust the gain or magnification?

    Thank you very much.

  • +1 in reply to Yuxi Liu(Tony)
    TI__Genius 12925 points

    Hi Tony,

    The configuration looks good. The gain may need to be adjusted with the end application, putting digital gain on the signal in the MCU or gain on an amplifier on the output. Also, make sure that you are using differential mode for maximum voltage swing. Have you tried using the on board ECM? This is on IN1 so it can be used at the same time as the MEMs mic, just for further amplifying the signal on the EVM for testing. Let me know if you need more help here - and remember in the end application the volume of a MEMS mic depends on the microphone's specs.

    Best,
    Mir