SH7052 Datasheet, PDF (555/919 Pages) Renesas Technology Corp – SuperHTM RISC engine

• MCx[1] Bits 7 to 4—Reserved: The initial value of these bits is undefined; they must be
initialized (by writing 0 or 1).
• MCx[1] Bits 3 to 0: Data Length Code (DLC3 to 0): These bits indicate the required length of
data frames and remote frames.
Bit 3:
DLC3
0
Bit 2:
DLC2
0
1
1
*
*: Don’t care
Bit 1:
DLC1
0
1
0
1
*
Bit 0:
DLC0
0
1
0
1
0
1
0
1
*
Description
Data length = 0 bytes
Data length = 1 byte
Data length = 2 bytes
Data length = 3 bytes
Data length = 4 bytes
Data length = 5 bytes
Data length = 6 bytes
Data length = 7 bytes
Data length = 8 bytes
• MCx[2] Bits 7 to 0—Reserved: The initial value of these bits is undefined; they must be
initialized (by writing 0 or 1).
• 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 15.3 Standard Identifier
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