ST72361AR4-Auto datasheet(157/279 Pages) STMICROELECTRONICS

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ST72361xx-Auto

LINSCI serial communication interface (LIN master/slave)

Doc ID 12468 Rev 3

157/279

15.3

LIN features

●

LIN master

–

13-bit LIN synch break generation

●

LIN slave

–

Automatic header handling

–

Automatic baud rate resynchronization based on recognition and measurement of

the LIN synch field (for LIN slave nodes)

–

Automatic baud rate adjustment (at CPU frequency precision)

–

11-bit LIN synch break detection capability

–

LIN parity check on the LIN identifier field (only in reception)

–

LIN error management

–

LIN header timeout

–

Hot plugging support

15.4

General description

The interface is externally connected to another device by two pins:

●

TDO: Transmit Data Output. When the transmitter is disabled, the output pin returns to

its I/O port configuration. When the transmitter is enabled and nothing is to be

transmitted, the TDO pin is at high level.

●

RDI: Receive Data Input is the serial data input. Oversampling techniques are used for

data recovery by discriminating between valid incoming data and noise.

Through these pins, serial data is transmitted and received as characters comprising:

●

An idle line prior to transmission or reception

●

A start bit

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A data word (8 or 9 bits) least significant bit first

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A stop bit indicating that the character is complete

This interface uses three types of baud rate generator:

●

A conventional type for commonly-used baud rates

●

An extended type with a prescaler offering a very wide range of baud rates even with

non-standard oscillator frequencies

●

A LIN baud rate generator with automatic resynchronization

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