AD9822 3-SHA mode data is the first transmission of high byte after the transmission of low byte bar, the AD range is how much? What is the correspondence between data and analog? Also in the set timing, R / W is R = 0, W = 1? There are manual in the configuratin Register D7 bit, the text can be explained to 1 or 0, and the table is fixed to 0, how should this set up? could you provide an example to me?