SPRUIM2H May 2020 – October 2023 AM2431 , AM2432 , AM2434 , AM6411 , AM6412 , AM6421 , AM6422 , AM6441 , AM6442
In IrDA modes, sleep mode is enabled by setting the 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.