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Original question:

TLV320AIC3120EVM-U: Unable to establish DIN to DOUT data transfer over I2S in TLV320AIC3120 audio codec

TLV320AIC3120: loop back test using PSOC

Dibyarekha Maharana
Prodigy 10 points
Part Number: TLV320AIC3120

Tool/software:

I am using the TLV320AIC3120 codec with PSOC62. Here with I am attaching the project. I want to test loopback. I am giving input as 1KHz sine tone but i am getting square waves.

Please help me.

Please check audio.c for register values.

i am doing loopback in wclk_isr().

  • 0
    TI__Genius 12995 points

    Hi,

    Can you attach scope shots that show your square wave output vs input, as well as tell me your clock settings? I see in audio.c that you are using the beep generator at some point, is this your sine wave source or are you giving a sine on the input pins and expecting on the output? 

    Best,
    Mir

  • +1 in reply to Mir Jeffres
    Prodigy 10 points

    I am giving sine input externally using audio analyzer to MIC1LP and checking the output at HPOUT using scope . In my code I changed the routing to HPOUT. Now it is coming. I am able to hear the 1KHz tone also