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PCM1862-Q1: PCM1862-Q1 MIC ADC Setting

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Replies: 5

Views: 175

Part Number: PCM1862-Q1

For the PCM1862, currently   ADC setting is as below

MIC1 --> VIN3P/M  --> ADC1_L    -->TDM slot 1

MIC2 --> VIN4P/M  --> ADC1_R--> TDM slot 2

If I want to set MIC1-->TDM slot 2, MIC2-->TDM slot 1, could you help double check how to use register to setting it?

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  • Hello,

    I know this may sound very basic, but can you adjust the physical connections?

    Regards,
    Collin Wells
    Precision ADC Applications

  • In reply to Collin Wells:

    Hello,

    Currently, the end customer MICs position  definition is changed ,  due to  do not want to change current layout, try to solve it by register setting,this is why I this question.

  • In reply to Martin Ma1:

    Martin,

    Use the digital mixers.

    by default mixer 1 passes only CH1L, and mixer 2 passes only CH1R, etc... but each mixer can pass any combination of the inputs. so its just a matter of changing the mixer coefficients.
    See table 24 in the data sheet.

    best regards,
    -Steve Wilson
  • In reply to Steve-Wilson:

    According to the table, it just show the register for channels, but I don’t know how to set.
    Could you provide how to set the register in order to swap the channel? Thanks a lot.
  • In reply to Martin Ma1:

    Martin,

    There is a tool linked in the data sheet.  Here is a direct link.  The tool will allow you to program each mixer.  Mixer 1 would be Slot 1,  Mixer 2 = slot 2 etc... 

    basically you will want to program mix1_CH1R to 0dB,  and the rest of the mix_1 channels to -120,  then mix2_CH1L to 0dB and the rest of Mix_2 to -120dB

    best regards,

    -Steve

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