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Chapter 16
FCAN Controller
User’s Manual U16702EE3V2UD00
Figure 16-60 shows the processing for a receive message buffer (MT[2:0] bits of CnMCONFm
register = 001B to 101B).
Figure 16-60:
Message Buffer Redefinition
Note:
If redefinition is performed during a message reception, confirm that a message is being
received because the RDY bit must be set after a message is completely received.
START
Set
message buffers
END
RDY = 1?
No
Yes
Clear RDY bit
CnMCTRLm.SET_RDY = 0
CnMCTRLm.CLEAR_RDY = 1
RDY = 0?
RSTAT = 0 or
VALID = 1?
Note
No
Clear VALID bit
CnCTRLCLEAR_VALID =1
Set RDY bit
CnMCTRLm.SET_RDY = 1
CnMCTRLm.CLEAR_RDY = 0
Yes
Yes
No
Wait for 4 CAN data bits
.
.
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