Figure 25-3, Shows the extended (29 bit) id, Er structure – Motorola ColdFire MCF5281 User Manual
Page 475: Figure 25-4
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25-5
Figure 25-3. Extended ID Message Buffer Structure
Figure 25-4. Standard ID Message Buffer Structure
25.3.1.1
Common Fields for Extended and Standard Format Frames
describes the message buffer fields that are common to both extended and standard identifier
format frames.
15–8
7–4
3–0
0x0
TIME STAMP
CODE
LENGTH
CONTROL/STATUS
0x2
ID[28:18]
SRR IDE
ID[17-15]
ID_HIGH
0x4
ID[14-0]
RTR
ID_LOW
0x6
DATA BYTE 0
DATA BYTE 1
0x8
DATA BYTE 2
DATA BYTE 3
0xA
DATA BYTE 4
DATA BYTE 5
0xC
DATA BYTE 6
DATA BYTE 7
0xE
Reserved
15–8
7–4
3–0
0x0
TIME STAMP
CODE
LENGTH
CONTROL/STATUS
0x2
ID[28:18]
RTR
0
0
0
0
ID_HIGH
0x4
16-BIT TIME STAMP
ID_LOW
0x6
DATA BYTE 0
DATA BYTE 1
0x8
DATA BYTE 2
DATA BYTE 3
0xA
DATA BYTE 4
DATA BYTE 5
0xC
DATA BYTE 6
DATA BYTE 7
0xE
Reserved
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3