msm9225 Oki Semiconductor, msm9225 Datasheet - Page 54

• Manufacturer Part Number: msm9225
• Description: Can Controller Area Network Controller
• Manufacturer: Oki Semiconductor

3. Overload frame
When reception preparations are not complete, the receive node outputs this frame from the 1st
intermission bit.
If a bit error is detected during intermission, this frame is output from the next bit after a bit error
is detected.
¡ Semiconductor
No.
1
2
3
4
5
R
D
Overload flag
from node m
Overload flag
from node n
Overload delimiter
Each frame
Interframe space/
overload frame
Name
(4)
No. of bits
1
20 Max
0 to 6
3/10
—
6
8
Overload frame
Outputs 6 consecutive "dominant" bits.
The overload flag is output because node m has not finished reception
preparations.
Having received an "overload flag" during an "interframe space", node n
outputs an overload flag.
Outputs 8 consecutive "recessive" bits.
If the 8th bit is observed to be "dominant", an overload frame is transmit
biginning at the next bit.
Output following end-of-frame, error delimiter, and overload delimiter.
"Interframe space" or "overload frame" continues.
2
Field Definitions
3
Difinition
Interframe space or overload frame
Overload delimiter
Overload flag (node n)
Overload flag (node m)
Each frame
(5)
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