TLV320AIC3254EVM-K: TLV320AIC3254EVM-K: PurePath I2S problem

Andres Uribe

I am trying to program a simple application with an I2S microphone and an I2S amplifier at the output, using purepath 5.95

after building, and executing "Download & run", the program detects the board and that it has loaded the firmware well.

But the program does nothing, I have no audio output in the amplifier; and when I modify values in the GEQ_5_1 block, it returns an error

Do you have an example project on purepath to check the I2S audio output, or what can I do to check if the program is running ok?

over 3 years ago

0 Daveon Douglas over 3 years ago

TI__Mastermind 28110 points

Hi,

Apologies for the delay, please wait at least 12-24 hours for our CODEC expert to respond to your question.

Thank you for your patience.

0 pdjuandi over 3 years ago

TI__Mastermind 29765 points

Hi,

Here is an example for AIC3254 PPS flow you can try on your setup.

AIC3254_Example.pfw

0 Andres Uribe over 3 years ago in reply to pdjuandi

Prodigy 90 points

I run the program using the I2S input through the USB-MODEVM board and it worked fine with the analog output, do you have an example of one using the board's analog microphone with I2S output?

0 pdjuandi over 3 years ago in reply to Andres Uribe

TI__Mastermind 29765 points

The default configuration in the PPS uses IN1L/R input which has connection to J1 on the board, you can connect that to an audio input source and record or play it to the audio output. If you want to use the on board MIC then can modify the register as needed.

Here is the link to a FAQ on configuring the device register.

https://e2e.ti.com/support/audio-group/audio/f/audio-forum/773140/faq-tlv320aic-codecs-and-adcs-modifying-the-device-configuration-of-a-pps-process-flow

Here is an example I put together for the above.

8510.AIC3254_Example.pfw

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TLV320AIC3254EVM-K: TLV320AIC3254EVM-K: PurePath I2S problem