SPRUIU1D July 2020 – December 2024 DRA821U , DRA821U-Q1
The RS-485 network physical layer consists of two-wire differential bus, usually twisted pair. External RS-485 transceiver IC is needed to access a RS-485 bus by the RS-485 mode. Figure 12-386 shows an example connection of UART in RS-485 mode.
Figure 12-386 RS-485
Mode Interface Signals