Figure 232. Break Detection In Lin Mode (11-Bit Break Length - Lbdl Bit Is Set) - ST STM32F207 Series Reference Manual

Universal synchronous asynchronous receiver transmitter (USART)

Figure 232. Break detection in LIN mode (11-bit break length - LBDL bit is set)

Case 1: break signal not long enough => break discarded, LBD is not set
RX line
Capture strobe
Break state
machine
Read samples
Case 2: break signal just long enough => break detected, LBD is set
RX line
Capture strobe
Break state
machine
Read samples
LBD
Case 3: break signal long enough => break detected, LBD is set
RX line
Capture strobe
Break state
machine
Read samples
LBD
656/1381
Idle Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Bit8 Bit9 Bit10
0 0 0
Idle Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Bit8 Bit9 B10
0 0 0
Idle Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Bit8 Bit9 Bit10
0 0 0 0
RM0033 Rev 9
Break frame
0 0 0 0
Break frame
0 0 0 0
Break frame
0 0 0 0
Idle
0 0 0 1
Delimiter is immediate
Idle
0 0 0 0
wait delimiter
0 0 0
RM0033
Idle
MSv40883V1