25.2.2 Signal Description
| Signal | Type | Description |
|---|---|---|
| AUX0 | Output/input | Clock for synchronous operation (XCK), Clear to Send (CTS) |
| AUX1 | Output | Transmit enable for RS-485 (XDIR), Request to Send (RTS) |
| TXD | Output/input | Transmitting line (and receiving line in One-Wire mode) |
| RXD | Input | Receiving line |