Figure 286. Break Detection In Lin Mode (11-Bit Break Length - Lbdl Bit Is Set) - ST STM32F101 series Reference Manual

Universal synchronous asynchronous receiver transmitter (USART)

Figure 286. 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
Capture Strobe
Break State machine
Read Samples
Case 2: break signal just long enough => break detected, LBD is set
Capture Strobe
Break State machine
Read Samples
Case 3: break signal long enough => break detected, LBD is set
Capture Strobe
Break State machine
Read Samples
797/1128
RX line
Idle Bit0 Bit1
0 0
RX line
Idle Bit0 Bit1
0 0
LBD
RX line
Idle Bit0 Bit1
0 0
LBD
DocID13902 Rev 15
Break frame
Bit2 Bit3 Bit4 Bit5 Bit6
0 0 0 0 0
Break frame
Bit2 Bit3 Bit4 Bit5 Bit6
0 0 0 0 0
Break frame
Bit2 Bit3 Bit4 Bit5 Bit6
0 0 0 0 0
Bit7 Bit8 Bit9 Bit10
0 0 0 1
delimiter is immediate
Bit7 Bit8 Bit9 B10
0 0 0 0
Bit7 Bit8 Bit9 Bit10 wait delimiter
0 0 0 0
RM0008
Idle
Idle
Idle