SH7760 Datasheet, PDF (815/1345 Pages) Renesas Technology Corp – SuperHTM RISC engine

(1) Message Control Field
Address
Bit Bit Name Description
H'100 + N*32 15 
Reserved
The write value should always be 0. The read value is not
guaranteed.
14 to STDID10 Standard ID
4
to STDID0 These bits set Identifiers (Standard Identifiers) of Data Frames
and remote Frames.
3
RTR
Remote Transmission Request
Used to distinguish between Data Frames and Remote
Frames. This bit is overwritten by the received CAN frames
depending on Data Frame or Remote Frame.
Important: Note that when the ATX bit is set with the setting
MBC = B’001, the RTR bit will never be set. When a Remote
Frame is received, the host CPU can be notified by CANRFPR
set or IRR2 (Remote Frame Request Interrupt), however, as
HCAN2 needs to transmit the current message as a Data
Frame, the RTR bit remains 0.
0: Data Frame
1: Remote Frame
H'100 + N*32 2
IDE
Identifier Extension
Used to distinguish between the standard format and extended
format of CAN data frames and remote frames.
0: Standard format
1: Extended format
H'102 + N*32
1
0
15 to
0
EXTID17
EXTID16
EXTID15
to EXTID0
Identifier Extension
These bits set Identifiers (Extended identifiers) for Data
Frames and Remote Frames.
H'104 + N*32 15 
14 
Reserved
The write value should always be 0. The read value is not
guaranteed.
Rev. 1.0, 02/03, page 765 of 1294