AD1937 - To use Single Daisy chain

Hello,
I am trying to use single daisy chain in AD1937.
I want to check my idea for single daisy chain connection between DSP and AD1937s before making test module.
Please review this idea.
Thanks.
Songhee.
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  • 0
    •  Analog Employees 
    on Aug 31, 2011 11:10 PM

    Hi Songhee,

    That sounds fine. If I understand correctly, MCLK = 24.576 MHz will be generated by an external source. Are you going to run both ADC and DAC ports in 16-channel mode? Which part will be generating BCLK and LRCLK? It is not necessary for MCLK to be phase locked with the serial clocks BCLK and LRCLK, but MCLK must never cross edges with them. BCLK and LRCLK must be properly timed against each other, however. I would recommend that you use one of the AD1937 ADC ports as a BCLK and LRCLK Master for the whole system.

    There is an eval board for this part: EVAL-AD1937AZ if you would like to test the modes before building your board.

    Best regards,

    Coleman

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  • 0
    •  Analog Employees 
    on Aug 31, 2011 11:10 PM

    Hi Songhee,

    That sounds fine. If I understand correctly, MCLK = 24.576 MHz will be generated by an external source. Are you going to run both ADC and DAC ports in 16-channel mode? Which part will be generating BCLK and LRCLK? It is not necessary for MCLK to be phase locked with the serial clocks BCLK and LRCLK, but MCLK must never cross edges with them. BCLK and LRCLK must be properly timed against each other, however. I would recommend that you use one of the AD1937 ADC ports as a BCLK and LRCLK Master for the whole system.

    There is an eval board for this part: EVAL-AD1937AZ if you would like to test the modes before building your board.

    Best regards,

    Coleman

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