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MC68HC08AZ60A Datasheet, PDF (393/480 Pages) Motorola, Inc – Microcontrollers | |||
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MSCAN08 Controller (MSCAN08)
Programmerâs Model of Control Registers
AC7âAC0 â Acceptance Code Bits
AC7âAC0 comprise a user-defined sequence of bits with which the
corresponding bits of the related identifier register (IDRn) of the
receive message buffer are compared. The result of this comparison
is then masked with the corresponding identifier mask register.
NOTE: The CIDAR0â3 registers can be written only if the SFTRES bit in
CMCR0 is set
21.14.13 MSCAN08 Identifier Mask Registers (CIDMR0-3)
The identifier mask registers specify which of the corresponding bits in
the identifier acceptance register are relevant for acceptance filtering.
For standard identifiers it is required to program the last three bits (AM2-
AM0) in the mask register CIDMR1 to âdonât careâ.
CIDMRO Address: $0514
Bit 7
6
5
4
3
2
1
Bit 0
Read:
AM7
AM6
AM5
AM4
AM3
AM2
AM1
AM0
Write:
Reset:
Unaffected by Reset
CIDMR1 Address: $0515
Bit 7
6
5
4
3
2
1
Bit 0
Read:
AM7
AM6
AM5
AM4
AM3
AM2
AM1
AM0
Write:
Reset:
Unaffected by Reset
CIDMR2 Address: $0516
Bit 7
6
5
4
3
2
1
Bit 0
Read:
AM7
AM6
AM5
AM4
AM3
AM2
AM1
AM0
Write:
Reset:
Unaffected by Reset
CIDMR3 Address: $0517
Bit 7
6
5
4
3
2
1
Bit 0
Read:
AM7
AM6
AM5
AM4
AM3
AM2
AM1
AM0
Write:
Reset:
Unaffected by Reset
Figure 21-27. Identifier Mask Registers (CIDMR0âCIDMR3)
MC68HC08AZ60A â Rev 0.0
MOTOROLA
MSCAN08 Controller (MSCAN08)
Advance Information
393
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