SPRUHZ7K August 2015 – April 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL
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.