DAC7742: DAC send data all the time

Hi Yifu,

The DAC output changes value when a new code is written to the output register using DB15-DB0. The data is loaded to the register on the rising edge of the CS control signal, so you'll at least need to control CS for a new value to be written:

The logic truth table defines what needs to be done with the control signals. You can leave R/W, RST, RSTSEL, and LDAC at static values in the highlighted case:

Best,

Katlynne Jones