MC68HC08AZ60 Datasheet, PDF (349/452 Pages) Motorola, Inc – Advance Information

Freescale Semiconductor, Inc.
MSCAN Controller (MSCAN08)
Programmer’s 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)
IDAM1–IDAM0— Identifier Acceptance Mode
The CPU sets these flags to define the identifier acceptance filter
organization (see Identifier Acceptance Filter on page 314). Table 9
summarizes the different settings. In “filter closed” mode no messages
will be accepted so that the foreground buffer will never be reloaded.
Table 9. Identifier 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
IDHIT1–IDHIT0— Identifier Acceptance Hit Indicator
The MSCAN08 sets these flags to indicate an identifier acceptance hit
(see Identifier Acceptance Filter on page 314). Table 9 summarizes
the different settings.
Table 10. Identifier 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
MC68HC08AZ60 — Rev 1.0
MSCAN Controller (MSCAN08)
349
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