AT89C51CC03U-RDTIM datasheet(118/195 Pages) ATMEL

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118

AT89C51CC03

4182I–CAN–06/05

Table 63. CANPAGE Register

CANPAGE (S:B1h)

CAN Message Object Page Register

Reset Value = 0000 0000b

Table 64. CANCONCH Register

CANCONCH (S:B3h)

CAN Message Object Control and DLC Register

No default value after reset

543

210

CHNB 3

CHNB 2

CHNB 1

CHNB 0

AINC

INDX2

INDX1

INDX0

Bit

Number

Bit Mnemonic Description

7-4

CHNB3:0

Selection of Message Object Number

The available numbers are: 0 to 14 (see Figure 48).

3AINC

Auto Increment of the Index (active low)

0 - auto-increment of the index (default value).

1 - non-auto-increment of the index.

2-0

INDX2:0

Index

Byte location of the data field for the defined message object (see Figure 48).

543

210

CONCH 1

CONCH 0

RPLV

IDE

DLC 3

DLC 2

DLC 1

DLC 0

Bit

Number

Bit Mnemonic Description

7-6

CONCH1:0

Configuration of Message Object

CONCH1 CONCH0

0: disable

1: Launch transmission

0: Enable Reception

1: Enable Reception Buffer

Note: The user must re-write the configuration to enable the corresponding bit

in the CANEN1:2 registers.

5RPLV

Reply Valid

Used in the automatic reply mode after receiving a remote frame

0 - reply not ready.

1 - reply ready and valid.

4IDE

Identifier Extension

0 - CAN standard rev 2.0 A (ident = 11 bits).

1 - CAN standard rev 2.0 B (ident = 29 bits).

3-0

DLC3:0

Data Length Code

Number of Bytes in the data field of the message.

The range of DLC is from 0 up to 8.

This value is updated when a frame is received (data or remote frame).

If the expected DLC differs from the incoming DLC, a warning appears in the

CANSTCH register.

AT89C51CC03U-RDTIM 数据表(PDF) 118 Page - ATMEL Corporation

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