2000 Jul 26
48
Philips Semiconductors
Preliminary Specification
Single-chip 8-bit microcontroller with CAN controller
P8xC591
12.5.17.1 Acceptance Filter Mode Register
The current operating mode is defined within the Acceptance Filter Mode Register located at CAN Address 29. A write
access to this register is possible only within Reset Mode (Mode Register).
Table 31
Acceptance Filter Mode Register (ACF Mode) (CAN address 29)
7
6
5
4
3
2
1
0
MFORMATB4
AMODEB4
MFORMATB3
AMODEB3
MFORMATB2
AMODEB2
MFORMATB1
AMODEB1
Table 32
Acceptance Filter Mode Register (ACF Mode) 1 bits
BIT
SYMBOL
NAME
VALUE
FUNCTION
ACFMOD.7
MFORMATB4 Acceptance Filter
Format Bank 4
1 (EFF)
Acceptance Filter Bank 4 is used for Extended Frame
Messages only, Standard Frame Messages are ignored
Acceptance Filter Bank 4 is used for Standard Frame
Messages only, Extended Frame Messages are ignored
The Single Acceptance Filter option is enabled for filter
bank 4, -> one long filter is active
The Dual Acceptance Filter option is enabled for filter
bank 4, -> two short filters are active
Acceptance Filter Bank 3 is used for Extended Frame
Messages only, Standard Frame Messages are ignored
Acceptance Filter Bank 3 is used for Standard Frame
Messages only, Extended Frame Messages are ignored
The Single Acceptance Filter option is enabled for filter
bank 3, -> one long filter is active
The Dual Acceptance Filter option is enabled for filter
bank 3, -> two short filters are active
Acceptance Filter Bank 2 is used for Extended Frame
Messages only, Standard Frame Messages are ignored.
Acceptance Filter Bank 2 is used for Standard Frame
Messages only, Extended Frame Messages are
ignored.
The Single Acceptance Filter option is enabled for filter
bank 2, -> one long filter is active
The Dual Acceptance Filter option is enabled for filter
bank 2, -> two short filters are active
Acceptance Filter Bank 1 is used for Extended Frame
Messages only, Standard Frame Messages are ignored
Acceptance Filter Bank 1 is used for Standard Frame
Messages only, Extended Frame Messages are ignored
The Single Acceptance Filter option is enabled for filter
bank 1, -> one long filter is active
The Dual Acceptance Filter option is enabled for filter
bank 1, -> two short filters are active
0 (SFF)
ACFMOD.6
AMODEB4
Acceptance Filter
Mode Bank 4
1 (single)
0 (dual)
ACFMOD.5
MFORMATB3 Acceptance Filter
Format Bank 3
1 (EFF)
0 (SFF)
ACFMOD..4
AMODEB3
Acceptance Filter
Mode Bank 3
1 (single)
0 (dual)
ACFMOD.3
MFORMATB2 Acceptance Filter
Format Bank 2
1 (EFF)
0 (SFF)
ACFMOD.2
AMODEB2
Acceptance Filter
Mode Bank 2
1 (single)
0 (dual)
ACFMOD.1
MFORMATB1 Acceptance Filter
Format Bank 1
1 (EFF)
0 (SFF)
ACFMOD.0
AMODEB1
Acceptance Filter
Mode Bank 1
1 (single)
0 (dual)