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CAN Controller (CAN)
Chapter 19
Preliminary User’s Manual U17566EE1V2UM00
Table 19-3
RTR frame settings
Table 19-4
Frame format setting (IDE bit) and number of identifier (ID) bits
<3> Control field
The control field sets “N” as the number of data bytes in the data field
(N = 0 to 8).
Figure 19-8
Control field
Note
D: Dominant = 0
R: Recessive = 1
In a standard format frame, the control field’s IDE bit is the same as the r1 bit.
Table 19-5
Data length setting
Caution
In the remote frame, there is no data field even if the data length code is not
0000B.
Frame Type
RTR Bit
Data frame
0 (D)
Remote frame
1 (R)
Frame Format
SRR Bit
IDE Bit
Number of Bits
Standard format mode
None
0 (D)
11 bits
Extended format mode
1 (R)
1 (R)
29 bits
R
D
r1
(IDE)
r0
RTR
DLC2
DLC
3
DLC1
DLC0
Control field
(D
a
t
a
field)
(Ar
b
itr
a
tion field)
Data Length Code
Data Byte Count
DLC3
DLC2
DLC1
DLC0
0
0
0
0
0 bytes
0
0
0
1
1 byte
0
0
1
0
2 bytes
0
0
1
1
3 bytes
0
1
0
0
4 bytes
0
1
0
1
5 bytes
0
1
1
0
6 bytes
0
1
1
1
7 bytes
1
0
0
0
8 bytes
Other than above
8 bytes regardless of the value of
DLC3 to DLC0
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