ST72361AR4-Auto datasheet(199/279 Pages) STMICROELECTRONICS

199 / 279 page

ST72361xx-Auto

LINSCI serial communication interface (LIN master only)

Doc ID 12468 Rev 3

199/279

Idle character

When an idle frame is detected, there is the same procedure as a data received character

plus an interrupt if the ILIE bit is set and the I bit is cleared in the CCR register.

Overrun error

An overrun error occurs when a character is received when RDRF has not been reset. Data

cannot be transferred from the shift register to the RDR register until the RDRF bit is

cleared.

When a overrun error occurs:

●

The OR bit is set.

●

The RDR content is not lost.

●

The shift register is overwritten.

●

An interrupt is generated if the RIE bit is set and the I bit is cleared in the CCR register.

The OR bit is reset by an access to the SCISR register followed by a SCIDR register read

operation.

Noise error

Oversampling techniques are used for data recovery by discriminating between valid

incoming data and noise.

When noise is detected in a frame:

●

The NF is set at the rising edge of the RDRF bit.

●

Data is transferred from the shift register to the SCIDR register.

●

No interrupt is generated. However this bit rises at the same time as the RDRF bit

which itself generates an interrupt.

The NF bit is reset by a SCISR register read operation followed by a SCIDR register read

operation.

Framing error

A framing error is detected when:

●

The stop bit is not recognized on reception at the expected time, following either a de-

synchronization or excessive noise.

●

A break is received.

When the framing error is detected:

●

the FE bit is set by hardware

●

Data is transferred from the shift register to the SCIDR register.

●

No interrupt is generated. However this bit rises at the same time as the RDRF bit

which itself generates an interrupt.

The FE bit is reset by a SCISR register read operation followed by a SCIDR register read

operation.

ST72361AR4-Auto Datasheet(PDF) 199 Page - STMicroelectronics

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