STMicroelectronics STM32WL5 Series

Universal synchronous/asynchronous receiver transmitter (USART/UART) RM0453
1154/1450 RM0453 Rev 5
Figure 324. IrDA SIR ENDEC block diagram
Figure 325. IrDA data modulation (3/16) - Normal mode
MSv31164V1
USART
OR
SIR
Transmit
Encoder
SIR
Receive
DEcoder
TX
SIREN
RX
USART_RX
IrDA_IN
IrDA_OUT
USART_TX
MSv31165V1
TX
Start
bit
0 101 0 0 1 1 01
Stop
bit
Bit period
IrDA_OUT
IrDA_IN
RX
3/16
0101 001101