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TLV320AIC23B: AIC23 GUI 3.0 about REG LRS/RLS Left/right line simultaneous volume/mute update ISSUE

user6473152
Prodigy 170 points
Part Number: TLV320AIC23B

Hi all,

  I have a problem about register REG LRS/RLS  Left/right line simultaneous volume/mute update  for Left/right line input channel volume control (Address: 0000000   Address: 00000001).

 1、 First,I choose the LRS bit, then i chnage the L VOL D4 D3 D2 D1 D0 from 10111 to 10001,and i find that only left channel volume is changed,however,right channel volume don't change.Normal,i think that right channel volume should be also changed.please see following picture,

  

2、I choose the RLS bit, then i chnage the  R VOL D4 D3 D2 D1 D0 from 10111 to 10001,and i find that left channel volume and right channel volume is changed simultaneously..please see following picture,

  Why is there such a difference between the LRS and RLS ?

  Looking forward to your reply.

 BR!

  GUO

  • 0
    TI__Mastermind 22950 points

    Hello GUO,

    I am not very familiar with the AIC23 and the GUI software. Is there a command line interface available for this GUI to send commands directly? If so, I would attempt to try that out. 

    Let me see if I can get ahold of an EVM and GUI to try and run some tests on my own. 

    Regards,
    Aaron Estrada

  • 0 in reply to Aaron Estrada
    Prodigy 170 points

    Hello Aaron,

       I use TI's official software AIC23 GUI 3.0.

      And i use another I2C software to configure the register about LRS\RLS. I found that the LRS or RLS left channel volume and right channel volume is changed simultaneously.

        Why is there such a difference between the  two software？

    Regards,
    GUO

  • 0 in reply to user6473152
    TI__Mastermind 22950 points

    Hello GUO,

    I suspect there may be an error here in the software. This device and software is quite old so I cannot speak with 100% certainty. Regardless, I am glad you were able to confirm with an I2C write with different software. 

    If there are no other questions, I will go ahead and close this thread. 

    Regards,

    Aaron Estrada