SH7261 datasheet(892/1348 Pages) RENESAS

892 / 1348 page

Section 19 Controller Area Network (RCAN-ET) [R5S72611] [R5S72613]

Rev. 2.00 Sep. 07, 2007 Page 860 of 1312

REJ09B0320-0200

Figure 19.8 - Halt Mode/Sleep Mode shows allowed state transition.

• Don't set MCR5 (Sleep Mode) without entering Halt Mode.

• After setting MCR1, make sure that GSR4 is set and the RCAN-ET has entered Halt Mode

before clearing MCR1.

Power On/SW Reset

Reset

clear MCR0

and GSR3 = 0

Clear MCR1

and MCR5

Notes: 1. MCR5 can be cleared by automatically by detecting a dominant bit on the CAN Bus if MCR7

is set or by writing "0".

2. MCR1 is cleared in SW. Clearing MCR1 and setting MCR5 have to be carried out by the

same instruction.

3. MCR1 must not be cleared in SW, before GSR4 is set. MCR1 can be set automatically in HW

when RCAN-ET moves to Bus Off and MCR14 and MCR6 are both set.

4. When MCR5 is cleared and MCR1 is set at the same time, RCAN-ET moves to Halt Request.

Right after that, it moves to Halt Mode with no reception/transmission.

Transmission

Reception

Set MCR1*3

Halt Request

Except Transmitter/Receiver/BusOff, if MCR6 = 0

BusOff or except Transmitter/Receiver, if MCR6 = 1

Halt Mode

Clear MCR5*1

Clear MCR5

Set MCR1*4

Sleep Mode

Set MCR5

Clear MCR1*2

Figure 19.8 Halt Mode/Sleep Mode

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