T89C51CC02CA-RATIM datasheet(100/145 Pages) ATMEL

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100

T89C51CC02

4126D–CAN–05/03

Table 80. 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 81. CANMSG Register

CANMSG (S:A3h)

CAN Message Data Register

No default value after reset.

765

43210

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 39.

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.

765

43210

MSG 7MSG 6MSG 5MSG 4

MSG 3MSG 2

MSG 1MSG 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,...)

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