M16CSLASH29 datasheet(317/499 Pages) RENESAS

317 / 499 page

17. CAN Module

page 293

Figure 17.7 C0CTLR Register

17.1.3.2 C0CTLR Register

Figure 17.7

shows the C0CTLR register.

Bit Symbol

Bit Name

Function

Reset

CAN module

reset bit

(Note 1)

Loop back mode

LoopBack

select bit

(2)

Message order

MsgOrder

BasicCAN

Basic CAN mode

select bit

(2)

select bit

(2)

BusErrEn

Bus error interrupt

enable bit (2)

Sleep

Sleep mode

select bit (2, 3)

CAN port enable bit

(2, 3)

PortEn

(b7)

CAN0 Control Register

Symbol

Address

After reset

C0CTLR

X00000012

021016

NOTES:

1. When the Reset bit is set to 1 (CAN reset/initialization mode), check that the State_Reset bit in the C0STR register is set to 1 (Reset mode).

2. Change this bit only in the CAN reset/initialization mode.

3. When using CAN0 wake-up interrupt, set these bits to 1.

4. When the PortEn bit is set to 1, set the PD9_2 bit in the PD9 register to 0.

0: Operation mode

1: Reset/initialization mode

0: Word access

1: Byte access

0: Basic CAN mode disabled

1: Basic CAN mode enabled

0: Loop back mode disabled

1: Loop back mode enabled

0: Bus error interrupt disabled

1: Bus error interrupt enabled

0: Sleep mode disabled

1: Sleep mode enabled; clock supply stopped

0: I/O port function

1: CTx/CRx function(4)

(b15)

(b8)

Bit Symbol

Bit Name

Function

TSPreScale

Bit1, Bit0

TSReset

RXOnly

RetBusOff

Nothing is assigned. If necessary, set to 0.

When read, the content is undefined

Nothing is assigned. If necessary, set to 0.

When read, the content is undefined

XX0X00002

Symbol

Address

After reset

C0CTLR

021116

b1 b0

NOTES:

1. When the TSReset bit is set to 1, the C0TSR register is set to 000016. After this, the bit is automatically set to 0.

2. When the RetBusOff bit is set to 1, registers C0RECR and C0TECR are set to 0016. After this, the bit is automatically set to 0.

3. Change this bit only in the CAN reset/initialization mode.

4. When the listen-only mode is selected, do not request the transmission.

0 0: Period of 1 bit time

0 1: Period of 1/2 bit time

1 0: Period of 1/4 bit time

1 1: Period of 1/8 bit time

0: In an idle state

1: Force reset of the time stamp counter

0: Listen-only mode disabled

1: Listen-only mode enabled (4)

0: In an idle state

1: Force return from bus off

Time stamp

prescaler(3)

Time stamp counter

reset bit(1)

Return from bus off

command bit(2)

Listen-only mode

select bit (3)

Nothing is assigned. If necessary, set to 0.

When read, the content is undefined

(b4)

(b7-b6)

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