SBAS683B August 2014 – May 2020 ADS1120-Q1
PRODUCTION DATA.
The SPI-compatible serial interface of the device is used to read conversion data, read and write the device configuration registers, and control device operation. Only SPI mode 1 (CPOL = 0, CPHA = 1) is supported. The interface consists of five control lines (CS, SCLK, DIN, DOUT/DRDY, and DRDY) but can be used with only four or even three control signals as well. The dedicated data-ready signal (DRDY) can be configured to be shared with DOUT/DRDY. If the serial bus is not shared with any other device, CS can be tied low permanently so that only signals SCLK, DIN, and DOUT/DRDY are required to communicate with the device.