ST72561AR7-Auto datasheet(218/324 Pages) STMICROELECTRONICS

Il numero della parte	ST72561AR7-Auto

Spiegazioni elettronici	Clock, reset and supply management

PDF	324 Pages

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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218 / 324 page

beCAN controller (beCAN)

ST72561-Auto

218/324

Doc ID 12370 Rev 8

Figure 95.

CAN block diagram

Figure 96.

beCAN operating modes

17.3

Operating modes

The beCAN has three main operating modes: Initialization, Normal and Sleep. After a

hardware reset, beCAN is in Sleep mode to reduce power consumption. The software

requests beCAN to enter Initialization or Sleep mode by setting the INRQ or SLEEP bits in

the CMCR register. Once the mode has been entered, beCAN confirms it by setting the

INAK or SLAK bits in the CMSR register. When neither INAK nor SLAK are set, beCAN is in

4 5

CAN 2.0B Active Core

Mailbox 0

Transmission

Filter

1 2

Mailbox 1

Mailbox 0

Receive FIFO

Acceptance Filters

Tx Mailboxes

Master Control

Scheduler

Master Status

Transmit Status

Transmit Prio

Receive FIFO

Error Status

Error Int. Enable

Tx Error Counter

Rx Error Counter

Diagnostic

Bit Timing

Filter Master

Filter Config.

Page Select

Interrupt Enable

SLEEP

SYNC

INITIALIZATION

NORMAL

P *

INR

INRQ

RESET

SLAK= 1

INAK = 0

SLAK= X

INAK = X

SLAK= 0

INAK = 1

SLE

SLAK= 0

INAK = 0

INRQ

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