DCTRL=DISABLED, SEL=RTS, AADEN=DISABLED, OINV=LOW, RXDIS=ENABLED, NMMEN=DISABLED
RS-485/EIA-485 Control. Contains controls to configure various aspects of RS-485/EIA-485 modes.
| NMMEN | Multidrop mode select. 0 (DISABLED): Disabled. RS-485/EIA-485 Normal Multidrop Mode (NMM) is disabled. 1 (ENABLED): Enabled. RS-485/EIA-485 Normal Multidrop Mode (NMM) is enabled. In this mode, an address is detected when a received byte causes the USART to set the parity error and generate an interrupt. |
| RXDIS | Receive enable. 0 (ENABLED): Enabled. The receiver is enabled. 1 (DISABLED): Disabled.The receiver is disabled. |
| AADEN | Auto Address Detect enable. 0 (DISABLED): Disabled. Auto Address Detect (AAD) is disabled. 1 (ENABLED): Enabled. Auto Address Detect (AAD) is enabled. |
| SEL | Direction control. 0 (RTS): RTS. If direction control is enabled (bit DCTRL = 1), pin RTS is used for direction control. 1 (DTR): DTR. If direction control is enabled (bit DCTRL = 1), pin DTR is used for direction control. |
| DCTRL | Direction control enable. 0 (DISABLED): Disabled. Disable Auto Direction Control. 1 (ENABLED): Enabled. Enable Auto Direction Control. |
| OINV | Polarity. This bit reverses the polarity of the direction control signal on the RTS (or DTR) pin. 0 (LOW): 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): 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. |