UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 599

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(22) CAN message id register m (C0MIDLm, C0MIDHm)
The C0MIDLm and C0MIDHm registers are used to set an identifier (ID).
After reset: Undefined
Note The ID17 to ID0 bits are not used.
Cautions 1. Be sure to write 0 to bits 14 and 13 of the C0MIDHm register.
MA0
Caution Be sure to write 0 to bits 2 and 1.
C0MIDLm
C0MIDHm
IDE
0
1
0
1
ID28 to ID18
ID28 to ID0
ID28 to ID0
Message buffer not used.
Message buffer used.
Standard format mode (ID28 to ID18: 11 bits)
Extended format mode (ID28 to ID0: 29 bits)
2. Be sure to align the ID value according to the given bit positions into this
registers. Note that for standard ID, the ID value must be shifted to fit into
ID28 to ID11 bit positions.
ID15
ID23
IDE
ID7
15
15
7
7
R/W
ID14
ID22
ID6
14
14
Standard ID value of 11 bits (when IDE = 0)
Extended ID value of 29 bits (when IDE = 1)
6
0
6
Preliminary User’s Manual U19748EJ1V0UD
CHAPTER 15 CAN CONTROLLER
Address: See Table 15-16 Register Access Types.
ID13
ID21
ID5
13
13
5
0
5
Message Buffer Assignment Bit
Format Mode Specification Bit
ID12
ID28
ID20
ID4
12
12
4
4
Note
ID11
ID27
ID19
ID3
11
11
3
3
Message ID
ID10
ID26
ID18
ID2
10
10
2
2
ID25
ID17
ID9
ID1
9
1
9
1
ID24
ID16
ID8
ID0
8
0
8
0
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