
102
T89C51CC01
Rev. D – 17-Dec-01
Table 66. CANIDM4 Register for V2.0 part A
CANIDM4 for V2.0 part A
(S:C7h)
CAN Identifier Mask Registers 4
Note: The ID Mask is only used for reception.
No default value after reset.
Table 67. CANIDM1 Register for V2.0 part B
CANIDM1 for V2.0 part B
(S:C4h)
CAN Identifier Mask Registers 1
Note: The ID Mask is only used for reception.
No default value after reset.
76543210
- - - - - RTRMSK - IDEMSK
Bit
Number
Bit
Mnemonic Description
7-3 -
Reserved
The values read from these bits are indeterminate. Do not set these bits.
2RTRMSK
Remote transmission request mask value
0 - comparison true forced.
1 - bit comparison enabled.
1-
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.
76543210
IDMSK28 IDMSK27 IDMSK26 IDMSK25 IDMSK24 IDMSK23 IDMSK22 IDMSK21
Bit
Number
Bit
Mnemonic Description
7-0
IDMSK28:
21
IDentifier mask value
0 - comparison true forced.
1 - bit comparison enabled.
See Figure 37.
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