09.12.2012 Views

RM0090: Reference manual - STMicroelectronics

RM0090: Reference manual - STMicroelectronics

RM0090: Reference manual - STMicroelectronics

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Universal synchronous asynchronous receiver transmitter (USART) <strong>RM0090</strong><br />

Figure 254. Break detection in LIN mode (11-bit break length - LBDL bit is set)<br />

Case 1: break signal not long enough => break discarded, LBD is not set<br />

RX line<br />

Capture Strobe<br />

Break State machine<br />

Read Samples<br />

RX line<br />

Capture Strobe<br />

Break State machine<br />

Read Samples<br />

0<br />

Break Frame<br />

Idle Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Bit8 Bit9 Bit10<br />

Idle<br />

0<br />

0 0 0 0 0 0 0 0 0 1<br />

Case 2: break signal just long enough => break detected, LBD is set<br />

LBD<br />

RX line<br />

Capture Strobe<br />

Break State machine<br />

Read Samples<br />

Break Frame<br />

Idle Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Bit8 Bit9 B10<br />

Idle<br />

0<br />

0 0 0 0 0 0 0 0 0 0<br />

Case 3: break signal long enough => break detected, LBD is set<br />

LBD<br />

Break Frame<br />

Idle Bit0 Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Bit8 Bit9 Bit10 wait delimiter Idle<br />

0 0 0 0 0 0 0 0 0 0<br />

765/1416 Doc ID 018909 Rev 3<br />

delimiter is immediate

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!