OINV=LOW_THE_DIRECTION_C, NMMEN=DISABLED_, RXDIS=ENABLED_, AADEN=DISABLED_, DCTRL=DISABLE_AUTO_DIRECTI, SEL=RTS_IF_DIRECTION_CO
RS-485/EIA-485 Control. Contains controls to configure various aspects of RS-485/EIA-485 modes.
| NMMEN | RS-485/EIA-485 Normal Multidrop Mode (NMM) mode select. 0 (DISABLED_): Disabled. 1 (ENABLED_IN_THIS_MOD): Enabled. In this mode, an address is detected when a received byte causes the UART to set the parity error and generate an interrupt. |
| RXDIS | Receive enable. 0 (ENABLED_): Enabled. 1 (DISABLED_): Disabled. |
| AADEN | Auto Address Detect (AAD) enable. 0 (DISABLED_): Disabled. 1 (ENABLED_): Enabled. |
| SEL | Direction control. 0 (RTS_IF_DIRECTION_CO): RTS. If direction control is enabled (bit DCTRL = 1), pin RTS is used for direction control. 1 (DTR_IF_DIRECTION_CO): DTR. If direction control is enabled (bit DCTRL = 1), pin DTR is used for direction control. |
| DCTRL | Direction control enable. 0 (DISABLE_AUTO_DIRECTI): Disable Auto Direction Control. 1 (ENABLE_AUTO_DIRECTIO): Enable Auto Direction Control. |
| OINV | Polarity. This bit reverses the polarity of the direction control signal on the RTS (or DTR) pin. 0 (LOW_THE_DIRECTION_C): LOW. The direction control pin will be driven to logic 0 when the transmitter has data to be sent. It will be driven to logic 1 after the last bit of data has been transmitted. 1 (HIGH_THE_DIRECTION_): HIGH. The direction control pin will be driven to logic 1 when the transmitter has data to be sent. It will be driven to logic 0 after the last bit of data has been transmitted. |
| RESERVED | Reserved, user software should not write ones to reserved bits. The value read from a reserved bit is not defined. |