ST72361AR4-Auto datasheet(158/279 Pages) STMICROELECTRONICS

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LINSCI serial communication interface (LIN master/slave)

ST72361xx-Auto

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Doc ID 12468 Rev 3

Figure 77.

SCI block diagram (in conventional baud rate generator mode)

15.5

SCI mode - functional description

15.5.1

Conventional baud rate generator mode

The block diagram of the serial control interface in conventional baud rate generator mode is

shown in Figure 77.

It uses four registers:

●

2 control registers (SCICR1 and SCICR2)

●

A status register (SCISR)

●

A baud rate register (SCIBRR)

WAKE

UNIT

RECEIVER

CONTROL

SCISR

TRANSMIT

CONTROL

TDRE TC RDRF IDLE

OR/

SCI

CONTROL

INTERRUPT

SCICR1

SCID

WAKE PCE

PS 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

RECEIVER RATE

TRANSMITTER RATE

SCIBRR

SCP1

fCPU

CONTROL

SCP0 SCT2 SCT1 SCT0 SCR2 SCR1SCR0

/PR

/16

CONVENTIONAL BAUD RATE GENERATOR

SBK

RWU

ILIE

RIE

TCIE

TIE

SCICR2

LHE

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