About a register bit LR_POR on ADAU1977(ADC)

Hello all,

I have a question.

Could you explain the detailed function of the register bit "LR_POR"?

This register is just a register to invert LRCLK?

I am confused at the way the data sheet explain saying "lo then hi/ hi then lo"

Thank you 

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  • Hello Dave

    Thank you so much for your answer.

    I totally understand about this matter.

    I am so sorry for my misunderstanding.

    Below is how I misunderstood this bit (LR_POL) configuration.

    If I set the LR_POL bit, it would be "LRCLK High then Low".

    When I looked at the figure.28, I thought the LRCLK waveform is being "High(for the 1BCLK length ) then low(for the rest of the frame)" but it is low then high. This was my misunderstanding.

    High then low/ low then high are just talking about the transition.

    Also Thank you so much for telling me how to use the LRCLK in Pulse mode by setting the bit "LR_MODE".

    This also help me stop misunderstanding this point.

    Best Regards,

    Yuta Mihara

Reply
  • Hello Dave

    Thank you so much for your answer.

    I totally understand about this matter.

    I am so sorry for my misunderstanding.

    Below is how I misunderstood this bit (LR_POL) configuration.

    If I set the LR_POL bit, it would be "LRCLK High then Low".

    When I looked at the figure.28, I thought the LRCLK waveform is being "High(for the 1BCLK length ) then low(for the rest of the frame)" but it is low then high. This was my misunderstanding.

    High then low/ low then high are just talking about the transition.

    Also Thank you so much for telling me how to use the LRCLK in Pulse mode by setting the bit "LR_MODE".

    This also help me stop misunderstanding this point.

    Best Regards,

    Yuta Mihara

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