ST72361AR4-Auto datasheet(175/279 Pages) STMICROELECTRONICS

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ST72361xx-Auto

LINSCI serial communication interface (LIN master/slave)

Doc ID 12468 Rev 3

175/279

Figure 81.

SCI block diagram in LIN slave mode

15.9.3

LIN reception

In LIN mode the reception of a byte is the same as in SCI mode but the LINSCI has features

for handling the LIN header automatically (identifier detection) or semiautomatically (synch

break detection) depending on the LIN Header detection mode. The detection mode is

selected by the LHDM bit in the SCICR3.

Additionally, an automatic resynchronization feature can be activated to compensate for any

clock deviation, for more details please refer to LIN baud rate.

LIN header handling by a slave

Depending on the LIN header detection method the LINSCI will signal the detection of a LIN

Header after the LIN synch break or after the Identifier has been successfully received.

WAKE

UNIT

RECEIVER

CONTROL

SCISR

TRANSMIT

CONTROL

TDRE TC RDRF IDLE

OR/

SCI

CONTROL

INTERRUPT

SCICR1

T8 SCID

WAKE PCE

PIE

Received Data Register (RDR)

Receive Shift Register

Read

Transmit Data Register (TDR)

Transmit Shift Register

Write

RDI

TDO

(DATA REGISTER) SCIDR

TRANSMITTER

CLOCK

RECEIVER

CLOCK

fCPU

/ LDIV

SBK

RWU

ILIE

RIE

TCIE

TIE

SCICR2

LIN SLAVE BAUD RATE

AUTO SYNCHRONIZATION

fCPU

SCICR3

LINE

LASE

LHIE

LSF

LHDF

EXTENDED PRESCALER

CONVENTIONAL BAUD RATE

GENERATOR

/16

SCIBRR

LPR7

LPR0

LIN SLAVE BAUD RATE GENERATOR

UNIT

LDUM

LHDM

LHE

LSLV

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