RL78/D1A User's Manual: Hardware - Renesas

Under development
Preliminary document
Specifications in this document are tentative and subject to change.
RL78/D1A CHAPTER 14 CAN CONTROLLER
Figure 14-48. Format of CAN Message Configuration Register (C0MCONFm, C1MCONFm) (2/2)
MA0 Message Buffer Assignment Bit
0 Message buffer not used.
1 Message buffer used.
Caution Be sure to write 0 to bits 2 and 1.
Remark m = 0 to 15
(23) CAN message ID register m (C0MIDLm, C1MIDLm and C0MIDHm, C1MIDHm)
The C0MIDLm, C1MIDLm and C0MIDHm, C1MIDHm registers are used to set an identifier (ID).
Figure 14-49. Format of CAN Message ID Register m
(C0MIDLm, C1MIDLm and C0MIDHm, C1MIDHm)
Address: See Table 14-16 After reset: Undefined R/W
C0MIDLm,
C1MIDLm
C0MIDHm,
C1MIDHm
15 14 13 12 11 10 9 8
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
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 Format Mode Specification Bit
0 Standard format mode (ID28 to ID18: 11 bits) Note
1 Extended format mode (ID28 to ID0: 29 bits)
Note The ID17 to ID0 bits are not used.
ID28 to ID0 Message ID
ID28 to ID18 Standard ID value of 11 bits (when IDE = 0)
ID28 to ID0 Extended ID value of 29 bits (when IDE = 1)
Cautions 1. Be sure to write 0 to bits 14 and 13 of the C0MIDHm, C1MIDHm register.
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.
Remark m = 0 to 15
R01UH0317EJ0004 Rev. 0.04 876
Feb. 22, 2013