Figure 34 shows a configuration with two devices cascaded together. One of the devices is an ADS1292R (two-channel with RESP) and the other is an ADS1292 (two-channel). Together, they create a system with four channels. DOUT, SCLK, and DIN are shared. Each device has its own chip select. When a device is not selected by the corresponding CS being driven to logic 1, the DOUT of this device is high-impedance. This structure allows the other device to take control of the DOUT bus.