TAA3040: Questions about TAA3040 example configuration code

Jacky Wang(QD)

Part Number: TAA3040

Tool/software:

Hi Team,

Customer wants to use TAA3040 for one channel audio input with I2S format data output as below picture showing, can you help to provide the example configuration code for this use case?

Thanks.

5 months ago

0 Lakshmi Narasimhan Badrinarayanan 5 months ago

TI__Expert 7730 points

Hi,

Can you confirm if the Audio input is AC-coupled, or DC-coupled? Since I am seeing a REF1P/REF1N net name in the schematic without an AC-coupling capacitor, I want to double-check this and provide the configuration accordingly.

Also, can you share the word length for the I2S data that is required? eg. 16-bit or 32-bit?

Thanks and Regards,

Lakshmi Narasimhan

0 Jacky Wang(QD) 5 months ago in reply to Lakshmi Narasimhan Badrinarayanan

TI__Genius 11590 points

Hi Lakshmi,

The input is AC coupled, it is not shown in picture. I2S data is 24bit.

Thanks.

0 Lakshmi Narasimhan Badrinarayanan 5 months ago in reply to Jacky Wang(QD)

TI__Expert 7730 points

Hi,

I will provide an example configuration by end of the day.

Thanks and Regards,

Lakshmi Narasimhan

0 Lakshmi Narasimhan Badrinarayanan 5 months ago in reply to Lakshmi Narasimhan Badrinarayanan

TI__Expert 7730 points

Hi,

Please refer to the example configuration (This has been derived from the 4-channel configuration given in the datasheet):

#
# Power up IOVDD and AVDD power supplies keeping SHDNZ pin voltage LOW 
# Wait for IOVDD and AVDD power supplies to settle to steady state operating voltage range.
# Release SHDNZ to HIGH.
# Wait for 1ms.
#
# Wake-up device by I2C write into P0_R2 using internal AREG
w 98 02 81
# 
#Configure the device for 24-bit I2S operation  by I2C write into P0_R7
w 98 07 60 
#
# Enable Input Ch-1 by I2C write into P0_R115
w 98 73 80
#
# Enable ASI Output for Ch-1 slots by I2C write into P0_R116
w 98 74 80
#
# Power-up ADC, MICBIAS and PLL by I2C write into P0_R117
w 98 75 E0

The required configurations can also be derived using the PPC3 GUI for the TAA3040, I'd suggest that customer can request for access to the GUI from the product folder:

TAA3040 data sheet, product information and support | TI.com

Thanks and Regards,

Lakshmi Narasimhan

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TAA3040: Questions about TAA3040 example configuration code