BAT32G1x9 user manual | Chapter 22 CAN control
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Rev.1.02
Fig.22-47. CAN Frame configuration register format(CnMCONFm)(2/2)
MA0
Message cache allocation bits
0
Message caching is not used
1
Use message caching
Note: Be sure to write bits 1 and 2 to 0
Note m = 0
to
15
22.7.23
CAN message ID register m (CnMIDLm and CnMIDHm).
CnMIDLm and CnMIDHm registers are used to set identifiers (IDs)
Figure 22-48. CAN
message ID registers in m format (CnMIDLm
and
CnMIDHm).
Reset value: No
R/W
15
14
13
12
11
10
9
8
CnMIDLm
ID15
ID14
ID13
ID12
ID11
ID10
ID9
ID8
7
6
5
4
3
2
1
0
ID7
ID6
ID5
ID4
ID3
ID2
ID1
ID0
15
14
13
12
11
10
9
8
CnMIDHm
IDE
0
0
ID28
ID27
ID26
ID25
ID24
7
6
5
4
3
2
1
0
ID23
ID22
ID21
ID20
ID19
ID18
ID17
ID16
IDE
The format mode specifies the bit
0
Standard format mode (ID18
to
ID28: 11
bits)
1
1
Extended format mode (ID0 to ID28:29 bits).
1
ID0 to ID17 bits are not used
ID0 to
ID28
Message ID
ID18 through
ID28
11-bit standard ID value (when IDE=0).
ID0 through
ID28
29-bit extension ID value (when IDE=1).
Note 1
Be sure to
write bits 13 and 14 of the
CnMIDHm
register to 0
2. Make sure to align the ID values into this register according to the positioning position given. Note that for
standard IDs, the ID value must be moved to the ID11 to ID28 positions.
Note m=0
to
15