AD56899R software LDAC update all ?

Hi,

is there a software LDAC command for the AD56899R, which updates all channels simultaneously (like "Write to input register n, update all" as existing for AD5663 etc)?

According to the PDF data sheet (Rev B) this command seems to be missing ...

Thanks,

Markus



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[edited by: JValeriani at 8:17 PM (GMT 0) on 9 Oct 2019]
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    •  Analog Employees 
    on Oct 10, 2019 2:27 AM

    Hi ,

    There is no direct equivalent of "Write to input register n, update all" of AD5663 on AD5689R.

    However, if you plan to update all DAC outputs (A and B) together, you can use command "0011" with address command "1001" to select both channels.

    However, if the desired DAC register contents are different and you want to update both outputs at the same time, you can send use command "0001" independently on two channels (one at a time), then issue command "0010" to both channels (one time). A total of 3 sets of frames.

    Cheers,

    Ivan

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  • 0
    •  Analog Employees 
    on Oct 10, 2019 2:27 AM

    Hi ,

    There is no direct equivalent of "Write to input register n, update all" of AD5663 on AD5689R.

    However, if you plan to update all DAC outputs (A and B) together, you can use command "0011" with address command "1001" to select both channels.

    However, if the desired DAC register contents are different and you want to update both outputs at the same time, you can send use command "0001" independently on two channels (one at a time), then issue command "0010" to both channels (one time). A total of 3 sets of frames.

    Cheers,

    Ivan

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