JAJSIU8B June 2015 – April 2020 ADS131E08S
When using multiple devices, the devices can be synchronized using the START signal. The delay time from the rising edge of the START signal to the falling edge of the DRDY signal is fixed for a given data rate (see the Conversion Mode section for more details on the settling times). Figure 54 shows the behavior of two devices when synchronized with the START signal.
To use the internal oscillator in a daisy-chain configuration, one device must be set as the master for the clock source with the internal oscillator enabled (CLKSEL pin = 1) and the internal oscillator clock must be brought out of the device by setting the CLK_EN register bit to 1. The master device clock is used as the external clock source for the other devices.
There are two ways to connect multiple devices with an optimal number of interface pins: standard configuration and daisy-chain configuration.