
R01UH0336EJ0102 Rev.1.02
Page 1142 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 20 CAN Controller (FCN)
Figure 20-18, Message Buffer Redefinition during Transmission, shows the
processing for a transmit message buffer during transmission
(FCNnMmSTRB.FCNnMmSSMT[3:0] = 0000
B
).
Figure 20-18
Message Buffer Redefinition during Transmission
Remote frame
Yes
No
START
No
Yes
Data frame or remote frame?
Set FCNnMmDATx register
Set FCNnMmDTLGB register
Clear FCNnMmSTRB.FCNnMmSSRT
Set FCNnMmMID0W register
Set FCNnMmDTLGB register
Set FCNnMmSTRB.FCNnMmSSRT
Set FCNnMmMID0W register
Data frame
Transmit?
Set FCNnMmCTL.FCNnMmRDYF
Set FCNnMmCTL.FCNnMmTRQF
Transmit abort process
Clear FCNnMmCTL.FCNnMmRDYF
FCNnMmCTL.
FCNnMmRDYF
= 0?
END