|
MC68HC908AZ60 Datasheet, PDF (377/480 Pages) Motorola, Inc – HCMOS Microcontroller Unit | |||
|
◁ |
MSCAN Controller (MSCAN08)
Programmerâs Model of Control Registers
MSCAN08
Identifier
Acceptance
Control Register
Address: $0508
Bit 7
6
5
4
3
2
1
Bit 0
Read: 0
Write:
0
0
IDAM1 IDAM0
0
IDHIT1 IDHIT0
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
Figure 23. Identifier Acceptance Control Register (CIDAC)
IDAM1âIDAM0â Identifier Acceptance Mode
The CPU sets these flags to define the identifier acceptance filter
organization (see Identifier Acceptance Filter on page 340). Table 9
summarizes the different settings. In âfilter closedâ mode no messages
will be accepted so that the foreground buffer will never be reloaded.
Table 9. Identiï¬er Acceptance Mode Settings
IDAM1
0
0
1
1
IDAM0
0
1
0
1
Identifier Acceptance Mode
Single 32-Bit Acceptance Filter
Two 16-Bit Acceptance Filter
Four 8-Bit Acceptance Filters
Filter Closed
45-mscan
MOTOROLA
IDHIT1âIDHIT0â Identifier Acceptance Hit Indicator
The MSCAN08 sets these flags to indicate an identifier acceptance hit
(see Identifier Acceptance Filter on page 340). Table 9 summarizes
the different settings.
Table 10. Identiï¬er Acceptance Hit Indication
IDHIT1
0
0
1
1
IDHIT0
0
1
0
1
Identifier Acceptance Hit
Filter 0 Hit
Filter 1 Hit
Filter 2 Hit
Filter 3 Hit
MSCAN Controller (MSCAN08)
MC68HC908AZ60 â Rev 2.0
375
|
▷ |