Linux/TLV320AIC3100: Unable to produce proper bit clock

jigarp

Intellectual 930 points

Part Number: TLV320AIC3100
Other Parts Discussed in Thread: AM5728,

Tool/software: Linux

Hello,

I'm using processor sdk linux 5.02 for am5728 with tlv320aic3100 codec.

I've applied 20 MHz clock to MCLK pin and modified aic31xx_divs as below

{12500000, 44100, 7, 2253, 128, 8, 2, 128, 8, 2},
{20000000, 44100, 4, 4100, 100, 4, 5, 100, 4, 5},

I can get waveform on all pins.

But unable to hear audio on speaker.

I've a thread in processor forum.

Here is the link.

https://e2e.ti.com/support/processors/f/791/p/804761/3013443#3013443

Regards,

Jigar

over 6 years ago

0 Steve-Wilson over 6 years ago

TI__Mastermind 30210 points

Jigar,

Are you setting the codec up to be the Audio bus master? or do you want it to be the audio bus slave?

note, it looks like you are setting the DOSR to 100, this is not supported the DOSR must be an integer multiple of the interpolation which is 8.

I recommend leaving the AOSR and DOSR at 128, use a J value of 4, but a D Value = 5158, M= 8 and N=2

best regards,

-Steve Wilson

0 jigarp over 6 years ago in reply to Steve-Wilson

Intellectual 930 points

Hello

Thanks for the reply.

After using this values i'm not getting any error related to bit clock.

But still i'm not getting any output on speaker.

I'm using codec to be Audio bus slave.

0 Steve-Wilson over 6 years ago in reply to jigarp

TI__Mastermind 30210 points

Jigarp,

please provide your most recent register configuration for the AIC3100.

best regards

-Steve Wilson

0 Steve-Wilson over 6 years ago in reply to Steve-Wilson

TI__Mastermind 30210 points

Jigarp,

I have not heard back from you. Do you still need some help with this? if you do please respond within 30 days or the thread will lock.

best regards,

-Steve Wilson

0 jigarp over 6 years ago in reply to Steve-Wilson

Intellectual 930 points

Hello,

I'm able to get audio working .

It was my mixer configuration error.

Now I'm getting pulse train at the speaker output pins which generate noise.

Thanks

Audio

Audio forum

Linux/TLV320AIC3100: Unable to produce proper bit clock