TLV320AIC3254: full duplex with PCM and analog mic and speaker

Bruno Henriques

Part Number: TLV320AIC3254

Hi gents,

i would like to use the TLV320AIC3254 between my analog mic and speaker and a radio module using the PCM, i've done the following drawing to make it easier to understand :

Both mic and speaker are mono and ground referenced.

I've tried to use pure path to route the TLV, i'm able to do Mic to

PCM using the follwing process :

then PCM to SPK using this one :

but how can I get both at the sme time? i've tried to use one channel per way but i've got building erros if someone can help.

regards

Bruno

over 4 years ago

0 Steve-Wilson over 4 years ago

TI__Mastermind 30100 points

Bruno,

You don't need the DSP_D_DSP_A blocks, the I2S_IN blocks and IntOut blocks are both on the DAC side, and the DecIN and I2S_OUT blocks are both on the ADC side.

a few issues I see... you are using the AIC3254App8x4x framework which is expecting to see 8x interpolation and 4x decimation but you are using 1x decimation and 2x interpolation. You need to match the component with the framework.

best regards

-Steve Wilson

0 Bruno Henriques over 4 years ago in reply to Steve-Wilson

Intellectual 435 points

Ok, got it.

thanks for your help

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TLV320AIC3254: full duplex with PCM and analog mic and speaker