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TLV320DAC32: Configuration issues

Part Number: TLV320DAC32

HI,

     my Configuration as below:

      now have a question,the actual output is no problem, but the high power does not work and the output is not amplified.

Is there any problem with configuration?

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# PIN RESET
p Reset 1  # Release the reset pin
d 150
w 30 00 00 # Select Page 0
w 30 01 80 # Software Reset Register
d 150

w 30 07 0A # Register 07 :DAC Datapath Setup Register
w 30 09 00 # Register 09 :Audio Serial Data Interface Control Register B
w 30 25 C0 # Register 37 :DAC Power and Output Driver Control Register
w 30 26 06 # Register 38 :High Power Output Driver Control Register
w 30 29 A0 # Register 41 :DAC Output Switching Control Register

w 30 2A 7C # Register 42 :Output Driver Pop Reduction Register

w 30 2B 00 # Register 43 :Left DAC Digital Volume Control Register
w 30 2C 00 # Register 44 :Right DAC Digital Volume Control Register

w 30 2F 80 # Register 47 ://DAC_L to HPLOUT Volume Control Register
w 30 33 3D # Register 51 :HPLOUT Output Level Control Register X-dB

w 30 36 80 # Register 54 ://DAC_L to HPLCOM Volume Control Register
w 30 3A 3D # Register 58 :HPLCOM Output Level Control Register X-dB

w 30 40 80 # Register 64 ://DAC_R to HPROUT Volume Control Register
w 30 41 3D # Register 65 :HPROUT Output Level Control Register X-dB

w 30 47 80 # Register 71 ://DAC_R to HPRCOM Volume Control Register
w 30 48 3D # Register 72 :HPRCOM Output Level Control Register X-dB

w 30 65 01 # Register 101 :Additional Control Register B

thanks.

  • Hi, Wu,

    I have few suggestions.

    First, the DAC routing that you are using is bypassing the output mixer. Usually we recommend to use the output mixer since it offers a better noise immunity. So, could you modify register 41 as shown below?

    w 30 29 00 # Register 41 :DAC Output Switching Control Register

    Then, do you have a capture of your output? Is it at Full-Scale level? Which level do you try to reach? You may use the HP outputs gain located in bits D7-D4 of registers 51, 58, 65 & 72. The maximum level would be 9dB and you can configure them as shown below:

    w 30 33 9D # Register 51 :HPLOUT Output Level Control Register X-dB

    w 30 3A 9D # Register 58 :HPLCOM Output Level Control Register X-dB

    w 30 41 9D # Register 65 :HPROUT Output Level Control Register X-dB

    w 30 48 9D # Register 72 :HPRCOM Output Level Control Register X-dB

    If the problem persists, could you provide your circuit schematics for more details?

    Thank you.

    Best regards,
    Luis Fernando Rodríguez S.

  • Hi Luis,

                 Could you provide your E-mail for me?

                 the answer still can't solve this issue.

                 I'll send schematics and detail information to you.

    thanks,

  • Hi, Wu,

    I just sent you an E2E chat with my email address.

    Best regards,
    Luis Fernando Rodríguez S.

  • Hi Luis,

               thanks, I wil send mail for you.