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23.9
Reception Flowchart of CAN Controller
Figure 23.9-1 shows a reception flowchart of the CAN controller.
■ Reception Flowchart of the CAN Controller
Figure 23.9-1 Reception Flowchart of the CAN Controller
Detection of start of data frame
or remote frame (SOF)
Is any message buffer (x) passing to
the acceptance filter found?
YES
Is reception
successful?
YES
Determine message buffer (x) where re-
ceived messages to be stored.
Store the received message
in the message buffer (x).
RCx?
0
Data frame
Received message?
RRTRx := 0
TREQx := 0
RCx := 1
RIEx ?
0
End of reception
CHAPTER 23 CAN CONTROLLER
NO
NO
1
ROVRx := 1
Remote frame
RRTRx := 1
1
TRTRx?
0
1
A reception interrupt
occurs.
507
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