What happens if the LTC2655 LDAC# pin is tied high (as in the typical application schematic on the last page of the data sheet) ? The pin description on page 16 doesn't say. I infer from Table 1 this means I have to use one of the update (or write and update) commands to transfer data from the input register to the DAC register.
If I were to use the LDAC# pin, it updates all 4 DACs from the 4 input registers simultaneously?
What happens if the LDAC# pin is tied low? Data sheet is even more vague about this condition.