UART to RS-485.
Posted: 26 Jul 2019, 17:49
Hi ALL,
For the NUC970 series, another alternate function of UART controllers is RS-485 9-bit mode function,
and direction control provided by RTS pin to implement the function by software. The RS-485 mode is
selected by setting the (FUN_SEL(UA_FUN_SEL[2:0]) = 011) to select RS-485 function. The RS-485
driver control is implemented using the RTS control signal from an asynchronous serial port to enable
the RS-485 driver. In RS-485 mode, many characteristics of the RX and TX are the same as UART.
What does this mean? No need to mount RS485 transceiver externally when UART can be configured to RS-485??
Also if any reference design is available . Please do share.
Thanks and best regards
Deepak
For the NUC970 series, another alternate function of UART controllers is RS-485 9-bit mode function,
and direction control provided by RTS pin to implement the function by software. The RS-485 mode is
selected by setting the (FUN_SEL(UA_FUN_SEL[2:0]) = 011) to select RS-485 function. The RS-485
driver control is implemented using the RTS control signal from an asynchronous serial port to enable
the RS-485 driver. In RS-485 mode, many characteristics of the RX and TX are the same as UART.
What does this mean? No need to mount RS485 transceiver externally when UART can be configured to RS-485??
Also if any reference design is available . Please do share.
Thanks and best regards
Deepak