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M16C/5L Group, M16C/56 Group
CAN0 Mailbox Register j
b31
0
(b47)
b15
b11
b8
0
0
0
0
0
0
0
0
0
0
(b111)
b63
(b127)
b15
Notes:
1. Write to the C0MBj register only when the associated C0MCTLj register is 00h and the corresponding
mailbox is not processing an abort request.
2. Refer to Table 25.4 "CAN0 Mailbox Memory Mapping" for detailed addresses.
3. If the mailbox has received a standard ID message, the EID bit in the mailbox is undefined.
4. The IDE bit is enabled when the IDFM bit in the C0CTLR register is 10b (mixed ID mode).
When the IDFM bit is not 10b, it should be written with 0.
5. If the mailbox has received a message with n bytes less than 8 bytes, the values of DATAn to DATA7 in the
mailbox are undefined.
6. If the mailbox has received a remote frame, the previous values of DATA0 to DATA7 in the mailbox are retained.
Figure 23.8
C0MBj Register
R01UH0127EJ0110 Rev.1.10
Sep 01, 2011
(j = 0 to 31)
Symbol
C0MB0 to C0MB31
b0
Bit Symbol
EID
Extended ID
SID
Standard ID
—
Reserved
(b29)
RTR
Remote Frame Request Bit
IDE
ID Extension Bit
(b32)
b0
0
0
Bit Symbol
—
Reserved
(b7-b0)
DLC
Data Length Code
—
Reserved
(b15-b12)
(b48)
b0
Symbol
DATA0 to
Data Bytes 0 to 7
DATA7
(b112)
b0
Symbol
TSL
Time Stamp Lower Byte
TSH
Time Stamp Higher Byte
(1)
(2)
Address
D500h to D6FFh
Bit Name
0: Corresponding EID bit is 0
(3)
1: Corresponding EID bit is 1
0: Corresponding SID bit is 0
1: Corresponding SID bit is 1
Set to 0.
0: Data frame
1: Remote frame
0: Standard ID
(4)
1: Extended ID
Bit Name
Set to 0.
(5)
0h to Fh
Set to 0.
Name
(5, 6)
00 to FFh
Name
00 to FFh
00 to FFh
23. CAN Module
Reset Value
Undefined
Function
RW
RW
RW
RW
RW
RW
Setting Value
RW
RW
RW
RW
Setting Value
RW
RW
Setting Value
RW
RW
RW
Page 562 of 803
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