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Testing custom AIC3254 board

murali kandasamy
Intellectual 350 points


Hi,

We have a design using AIC3254 connecting to a PIC32 controller. I remember reading about testing using the EVM. How to go about testing our design? Can our codec be connected to I2C and I2S lines of the USB-MODEVM to check the codec functionality?

Thanks 

Murali

  • 0
    TI__Guru 64206 points

    You can use the USB-MODEVM to contol the codec from the PC on your hardware if you connect the I2C interface (GND, SCL, SDA). Make sure that the IO voltages are compatible.

    If you want to stream audio with the USB-MODEVM, you'll also have to connect the I2S interface (and disconnect it from any other host).

  • 0 in reply to Dominik Hartl11
    Intellectual 350 points

    Hi,

    Thank you for the reply,but I have few more doubts...

    So both the codecs, the EVM3254K and our own codec will be accessible from the PC? How do we differentiate? Isn't the I2C address fixed at 03x?

    We tried cutting the power supply links w16-w20 in the EVM-K and connecting our codec to the I2C lines. But the EVM is not detected on the PC...Is the EEPROM on the EVM3254-K required to be detected as audio EVM on PC? 

    Thanks

    Murali