The DAC's Logic circuitry consists of a 12-bit serial-in parallelout Shift register (Register A) and a 12-bit DAC input Register (Register B). Serial data at the AD7543 SRI pin is clocked into Register A on the leading or trailing edge (user selected) of the strobe input. Once Register A is full its contents are loaded into Register B under control of the LOAD inputs. By Analog Devices, Inc.
