ST STM32G474

RM0440 Rev 4 1621/2126
RM0440 Universal synchronous/asynchronous receiver transmitter (USART/UART)
1733
Figure 540. Break detection in LIN mode (11-bit break length - LBDL bit is set)
MSv31156V1
Idle Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Bit8 Bit9 Bit10 Idle
0000 000 0001
Case 1: break signal not long enough => break discarded, LBDF is not set
RX line
Capture strobe
Break state
machine
Read samples
Idle Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Bit8 Bit9 B10 Idle
0000 000 0000
Case 2: break signal just long enough => break detected, LBDF is set
RX line
Capture strobe
Break state
machine
Read samples
Break frame
Break frame
Delimiter is immediate
LBDF
Idle Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Bit8 Bit9 Bit10 Idle
0000 000 0000
Case 3: break signal long enough => break detected, LBDF is set
RX line
Capture strobe
Break state
machine
Read samples
Break frame
LBDF
wait delimiter