Firstly, what is the purpose of DHR (Data Holding Register) and DOR (Data Output Register)?
Secondly, where does the data go after DOR register?
DOR is the register which directly controls the analog output. The digital value in the DOR represents directly the analog output from DAC. Data are transferred to DOR from DHR at the trigger event.
Bits in DOR directly control analog switches in the R-2R analog network which produces analog output voltage.
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