The TMUXS7614D can enter daisy chain mode by sending a 16-bit SPI command of 0x2500. Daisy chain mode allows to connect several devices in a daisy chain configuration. Providing the capability to turn on or off individual switches on each device on the chain. All devices share the same /CS, SCLK, and V­L­ lines. Each SDO line is connected to the SDI line of the next device on the chain, except the SDO line of the last device which is connected back to the MCU. To exit daisy chain mode a hardware reset is required. SPI signals in daisy chain are shown in Figure 4-2.

Figure 4-2 Daisy Chain Mode Signal