AT89C51CC02CA-RATUM datasheet(111/156 Pages) ATMEL

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111

AT/T89C51CC02

4126J–CAN–05/06

Table 86. CANIDM4 Register for V2.0 Part B

CANIDM4 for V2.0 Part B (S:C7h)

CAN Identifier Mask Registers 4

Note:

The ID Mask is only used for reception.

No default value after reset.

Table 87. CANMSG Register

CANMSG (S:A3h)

CAN Message Data Register

No default value after reset.

IDMSK 4

IDMSK 3

IDMSK 2

IDMSK 1

IDMSK 0

RTRMSK

IDEMSK

Bit Number

Bit Mnemonic

Description

7 - 3

IDMSK4:0

IDentifier Mask Value

0 - comparison true forced.

1 - bit comparison enabled.

See Figure 43.

2RTRMSK

Remote transmission request Mask Value

0 - comparison true forced.

1 - bit comparison enabled.

Reserved

The value read from this bit is indeterminate. Do not set this bit.

0IDEMSK

IDentifier Extension Mask Value

0 - comparison true forced.

1 - bit comparison enabled.

MSG 7

MSG 6

MSG 5

MSG 4

MSG 3

MSG 2

MSG 1

MSG 0

Bit Number

Bit Mnemonic

Description

7 - 0

MSG7:0

Message Data

This register contains the mailbox data byte pointed at the page

message object register.

After writing in the page message object register, this byte is equal

to the specified message location (in the mailbox) of the pre-

defined identifier + index. If auto-incrementation is used, at the end

of the data register writing or reading cycle, the mailbox pointer is

auto-incremented. The range of the counting is 8 with no end loop

(0, 1,..., 7, 0,...)

AT89C51CC02CA-RATUM Datasheet(PDF) 111 Page - ATMEL Corporation

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