Renesas 16-bit single-chip microcomputer Manual De Usuario

Rev.1.02    Jul 01, 2005    page 204 of 314
REJ09B0126-0102

M16C/6N Group (M16C/6NL, M16C/6NN)

18. CAN Module

This document is under development and its contents are subject to change.

Function

Bit Symbol

Reset

CAN Module 
Reset Bit 

(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

X0000001b

0210h

Symbol

Address

After Reset

C0CTLR

XX0X0000b

0211h

b7

b6

b5

b4

b3

b2

b1

b0

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".

RW

RW

RW

RW

RW

RW

RW

RW

-

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

(b15) (b8)

b7

b6

b5

b4

b3

b2

b1

b0

TSPreScale

TSReset

RXOnly

RetBusOff

Nothing is assigned. When write, set to "0". 
When read, its content is indeterminate.

Nothing is assigned. When write, set to "0". 
When read, their contents are indeterminate.

b1 b0

NOTES:

1. When the TSReset bit = 1, the C0TSR register is set to "0000

h

". After this, the bit is automatically set to "0".

2. When the RetBusOff bit = 1, the C0RECR and C0TECR registers are set to "00

h

". After this, this 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. 

RW

RW

RW

RW

-

RW

-

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: Nothing is occurred.
1: Force reset of the time stamp counter

0: Listen-only mode disabled
1: Listen-only mode enabled 

(4)

0: Nothing is occurred.
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. When write, set to "0". 
When read, its content is indeterminate.

-

(b4)

-

(b7-b6)

Bit Name

Function

Bit Symbol

Bit Name