Rainbow-electronics T89C51CC02 Manual de usuario descargar pdf (Pagina 98)

98 Rev.A - May 17, 2001

Preliminary

T89C51CC02

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.

Figure 95. CANIDM4 Register for V2.0 part B

CANMSG (S:A3h)

CAN Message Data Register

No default value after reset.

Figure 96. CANMSG Register

7 6 5 4 3 2 1 0

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 62.

2 RTRMSK

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.

0 IDEMSK

IDentifier Extension mask value

0 - comparison true forced.

1 - bit comparison enabled.

7 6 5 4 3 2 1 0

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 dynamic of

the counting is 8 with no end loop (0, 1,..., 7, 0,...)

1 2 ... 93 94 95 96 97 98 99 100 101 102 103 ... 136 137

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Rainbow-electronics T89C51CC02 Manual de usuario Pagina 98