SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
In IrDA modes, sleep mode is enabled by setting the UART3.UART_MDR1[3] IR_SLEEP bit to 1.
Sleep mode is entered when all of the following conditions exist:
The module wakes up when a change is detected on the RXD line or when data is written to the TX FIFO.