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DAC81404: NOP register

David Park
Expert 5610 points
Part Number: DAC81404

Hi,

There are a couple of questions.

1. what is NOP register's functionality?

2. if send the data without NOP, can memory fault or page fault be occured?

3. For asynchronous update, what value is for delay between SPI signal?

Thanks.

  • 0
    TI__Mastermind 28828 points

    Hi David,

    The NOP register is helpful for read commands or daisy chain mode. Writing to this register wont update anything. 

    I don't understand what you are asking here. Writing to the NOP register does not update any other register, and you're not required to ever write to the NOP register before writing to any other data register. Let me know if this does not answer your question

    The rising edge of SCLK is used as the "LDAC" in asynchronous mode. We do not have a spec for this timing, but you can refer to this figure from the datasheet for a typical plot of the DAC output response:

    Best,

    Katlynne Jones