ST72561AR7-Auto datasheet(166/324 Pages) STMICROELECTRONICS

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LINSCI serial communication interface (LIN master/slave)

ST72561-Auto

166/324

Doc ID 12370 Rev 8

Figure 79.

SCI baud rate and extended prescaler block diagram

15.5.7

Receiver muting and wake-up feature

In multiprocessor configurations it is often desirable that only the intended message

recipient should actively receive the full message contents, thus reducing redundant SCI

service overhead for all non-addressed receivers.

The non-addressed devices may be placed in sleep mode by means of the muting function.

Setting the RWU bit by software puts the SCI in sleep mode:

All the reception status bits can not be set.

All the receive interrupts are inhibited.

A muted receiver may be woken up in one of the following ways:

●

by Idle Line detection if the WAKE bit is reset,

●

by Address Mark detection if the WAKE bit is set.

TRANSMITTER

RECEIVER

SCIETPR

SCIERPR

EXTENDED PRESCALER RECEIVER RATE CONTROL

EXTENDED PRESCALER TRANSMITTER RATE CONTROL

EXTENDED PRESCALER

CLOCK

RECEIVER RATE

TRANSMITTER RATE

SCIBRR

SCP1

fCPU

CONTROL

SCP0 SCT2 SCT1 SCT0 SCR2 SCR1SCR0

/PR

/16

CONVENTIONAL BAUD RATE GENERATOR

EXTENDED RECEIVER PRESCALER REGISTER

EXTENDED TRANSMITTER PRESCALER REGISTER

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