mc68hc908qz16 Freescale Semiconductor, Inc, mc68hc908qz16 Datasheet - Page 151

• Manufacturer Part Number: mc68hc908qz16
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

IDAM1–IDAM0— Identifier Acceptance Mode
IDHIT1–IDHIT0— Identifier Acceptance Hit Indicator
The IDHIT indicators are always related to the message in the foreground buffer. When a message gets
copied from the background to the foreground buffer, the indicators are updated as well.
12.13.10 MSCAN08 Receive Error Counter
This read-only register reflects the status of the MSCAN08 receive error counter.
Freescale Semiconductor
The CPU sets these flags to define the identifier acceptance filter organization (see
Acceptance
will be accepted so that the foreground buffer will never be reloaded.
The MSCAN08 sets these flags to indicate an identifier acceptance hit (see
12.5 Identifier Acceptance
Address:
The CIDAC register can be written only if the SFTRES bit in the CMCR0 is
set.
Filter).
Reset:
Read:
Write:
RXERR7
Table 12-9
IDAM1
IDHIT1
$050E
Bit 7
0
0
0
1
1
0
0
1
1
Table 12-9. Identifier Acceptance Mode Settings
Table 12-10. Identifier Acceptance Hit Indication
Figure 12-25. Receiver Error Counter (CRXERR)
MC68HC908GZ16 • MC68HC908GZ8 Data Sheet, Rev. 4
Filter).
= Unimplemented
RXERR6
summarizes the different settings. In “filter closed” mode no messages
6
0
IDAM0
IDHIT0
Table 12-9
0
1
0
1
0
1
0
1
RXERR5
5
0
Single 32-bit acceptance filter
Two 16-bit acceptance filter
Four 8-bit acceptance filters
Filter closed
summarizes the different settings.
NOTE
RXERR4
4
0
Identifier Acceptance Mode
Identifier Acceptance Hit
RXERR3
3
0
Filter 0 hit
Filter 1 hit
Filter 2 hit
Filter 3 hit
RXERR2
Programmer’s Model of Control Registers
2
0
RXERR1
1
0
RXERR0
Bit 0
12.5 Identifier
0
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