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ADS8681: Register Write Operation

Koshi Ninomiya
Expert 6125 points

Part Number: ADS8681

Dear Team,

My customer uses the ADS8681 in their system. They want to confirm the following things.

Q1: How long does it take from writing to Register until it is valid (reflected)?
Q2: Are there restrictions on sequential writes to the Register?

Best Regards,

Koshi Ninomiya

  • +1
    TI__Expert 8230 points

    Hello Ninomiya-san, 

    Could you please share more information on what you mean with the register writes being reflected? 

    typically once the devices latches the command it should be set by the next frame. If you write to the register map, then send a command to read back in the next frame, the value set should be read back. 

    If setting a range, it should be set by the next frame, but since there is a latency of 1, I would discard the 1st data output after configuration, since that would have been sampled before the change of range was latched. 

    Koshi Ninomiya said:
    Q2: Are there restrictions on sequential writes to the Register?

    No, so long as the timing parameters are met. 

    Best regards, 

    Yolanda