T89C51CC02 Atmel, T89C51CC02 Datasheet - Page 98

• Manufacturer Part Number: T89C51CC02
• Description: 8-Bit MCU
• Manufacturer: Atmel

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.
CANMSG (S:A3h)
CAN Message Data Register
No default value after reset.
98
Bit Number Bit Mnemonic
Bit Number Bit Mnemonic
IDMSK 4
MSG 7
7-3
7-0
7
7
2
1
0
IDMSK 3
IDMSK4:0
RTRMSK
IDEMSK
MSG 6
MSG7:0
6
6
-
IDentifier mask value
Remote transmission request mask value
Reserved
IDentifier Extension mask value
Message data
IDMSK 2
Figure 95. CANIDM4 Register for V2.0 part B
MSG 5
0 - comparison true forced.
1 - bit comparison enabled.
See Figure 62.
0 - comparison true forced.
1 - bit comparison enabled.
The value read from this bit is indeterminate. Do not set this bit.
0 - comparison true forced.
1 - bit comparison enabled.
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,...)
5
5
Figure 96. CANMSG Register
Preliminary
IDMSK 1
MSG 4
4
4
IDMSK 0
MSG 3
3
3
Description
Description
RTRMSK
MSG 2
2
2
MSG 1
Rev.A - May 17, 2001
1
1
-
IDEMSK
MSG 0
0
0