TAS5731M: TAS5731M and audio with two kind of sample rates

Leo He

Intellectual 420 points

Part Number: TAS5731M

TAS5731M receive I2S signal from BLE module,

Music Audio sample rates is 44.1Khz

The system prompt is solidified in BLE module .It is 8khz.

Now ,i could only paly music, The system prompt can not be played.

Is there any method besides ASRC which can convert 8Khz into 44.1 khz? ASRC is too expensive.

over 5 years ago

0 Adam Sidelsky over 5 years ago

TI__Guru 61310 points

Leo,

The device should auto detect the new sample rate. What are the qualities of the other clocking signals when the system prompt is playing?

Can you show us a scope image of all the I2S signals when the system prompt is playing?

Regards,

-Adam

0 Leo He over 5 years ago in reply to Adam Sidelsky

Intellectual 420 points

we will provide i2S image later. wait a moment.

0 Leo He over 5 years ago in reply to Adam Sidelsky

Intellectual 420 points

Hi, Adam

Did this device can auto detect the new sample rate and the bits D7-D6 will be changed with sample rate?
We thought it fixed the register value

0 Adam Sidelsky over 5 years ago in reply to Leo He

TI__Guru 61310 points

Leo,

Yes the register should update once the sample rate changes, this is simply a status register.

Regards,

-Adam

Audio

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TAS5731M: TAS5731M and audio with two kind of sample rates