SH7055S Datasheet, PDF (589/1002 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7000 Series

• MCx[3] Bits 7 to 0—Reserved: The initial value of these bits is undefined; they must be
initialized (by writing 0 or 1).
• MCx[4] Bits 7 to 0—Reserved: The initial value of these bits is undefined; they must be
initialized (by writing 0 or 1).
• MCx[6] Bits 7 to 0: Standard Identifier (STD_ID10 to STD_ID3)
MCx[5] Bits 7 to 5: Standard Identifier (STD_ID2 to STD_ID0)
These bits set the identifier (standard identifier) of data frames and remote frames.
Standard identifier
SOF ID10 ID9
ID8
ID7
ID6
ID5
ID4
ID3
ID2
ID1
ID0
RTR
SRR
IDE
STD_IDxx
Figure 16.3 Standard Identifier
• MCx[5] Bit 4: Remote Transmission Request (RTR): Used to distinguish between data frames
and remote frames.
Bit 4: RTR
0
1
Description
Data frame
Remote frame
• MCx[5] Bit 3: Identifier Extension (IDE): Used to distinguish between the standard format and
extended format of data frames and remote frames.
Bit 3: IDE
0
1
Description
Standard format
Extended format
• MCx[5] Bit 2—Reserved: The initial value of this bit is undefined; it must be initialized (by
writing 0 or 1).
• MCx[5] Bits 1 and 0: Extended Identifier (EXD_ID17, EXD_ID16)
MCx[8] Bits 7 to 0: Extended Identifier (EXD_ID15 to EXD_ID8)
MCx[7] Bits 7 to 0: Extended Identifier (EXD_ID7 to EXD_ID0)
These bits set the identifier (extended identifier) of data frames and remote frames.
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