Hi Team,
My customer considers to use TLV320DAC3203EVM-K + USB-MODEVM.
He wants to evaluate it with external I2S signals from another board.
Is it possible?
I would like to know hardware settings to achieve it.
Best Regards,
Yaita
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Hi Team,
My customer considers to use TLV320DAC3203EVM-K + USB-MODEVM.
He wants to evaluate it with external I2S signals from another board.
Is it possible?
I would like to know hardware settings to achieve it.
Best Regards,
Yaita
Hi, Yaita-san,
The application is possible. The TLV320DAC3203EVM-K has many functionalities and it can be configured in multiple ways. In addition, the TLV320DAC3203EVM-K GUI has preconfigured codes that you may use in order to connect I2S signals from PC or even from another board.
I attached an example code for details.
############################################### # High Performance Stereo Playback # --------------------------------------------- # PowerTune mode PTM_P3 is used for high # performance 16-bit audio. # # Audio is routed to headphone outputs. ############################################### ############################################### # Software Reset ############################################### # # Select Page 0 w 30 00 00 # # Initialize the device through software reset w 30 01 01 # ############################################### ############################################### # Clock Settings # --------------------------------------------- # The codec receives: MCLK = 11.2896 MHz, # BLCK = 2.8224 MHz, WCLK = 44.1 kHz ############################################### # # Select Page 0 w 30 00 00 # # NDAC = 1, MDAC = 2 w 30 0b 81 82 # ############################################### ############################################### # Signal Processing Settings ############################################### # # Select Page 0 w 30 00 00 # # Set the DAC Mode to PRB_P8 w 30 3c 08 # ############################################### ############################################### # Configure Power Supplies ############################################### # # Select Page 1 w 30 00 01 # # Disable weak AVDD to DVDD connection w 30 01 08 # # Enable Master Analog Power Control w 30 02 00 # # Set the input power-up time to 3.1ms w 30 47 32 # # Set the REF charging time to 40ms w 30 7b 01 # ############################################### ############################################### # Configure DAC Channel ############################################### # # Select Page 1 w 30 00 01 # # De-pop: 5 time constants, 6k resistance w 30 14 25 # # Route LDAC/RDAC to HPL/HPR w 30 0c 08 08 # # Select Page 0 w 30 00 00 # # DAC => 0dB w 30 41 00 00 # # Power up LDAC/RDAC w 30 3f d6 # # Select Page 1 w 30 00 01 # # Unmute HPL/HPR driver, 0dB Gain w 30 10 00 00 # # Power up HPL/HPR w 30 09 30 # # Select Page 0 w 30 00 00 # # Unmute LDAC/RDAC w 30 40 00 # ###############################################
I hope this helps. Please let me know if you have additional questions or comments.
Best regards,
Luis Fernando Rodríguez S.
Hi, Yaita-san,
There's no need to remove the 0-ohm resistors. I would recommend the following procedure:
1.- Disable the I2S and MCLK signals from the USB port with the help of SW2 4-5. This will avoid collision in the I2S lines if external clock signals are connected.
2.- Connect the external clock signals to J14 as shown in the following diagram:
3.- Enable the external clock signals and verify its operation with the help of a scope on the clock test points of the EVM (TP35 - TP39).
Please try it and let me know if you have questions or comments about this.
Best regards,
Luis Fernando Rodríguez S.