NEC V850ES/F 3-L Series User Manual page 641

CAN Controller (CAN)
Set CnMDATAxm register Set CnMDATAxm register
Set CnMDLCm register Set CnMDLCm register
Clear RTR bit of CnMCONFm Clear RTR bit of CnMCONFm
register register
Set CnMIDLm and CnMIDHm Set CnMIDLm and CnMIDHm
registers registers
Figure 18-39
Figure 18-39 shows the processing for a transmit message buffer during
transmission (MT[2:0] bits of CnMCONFm register = 000
Transmit abort process Transmit abort process
Clear RDY bit Clear RDY bit
Data frame Data frame
Data frame or remote frame? Data frame or remote frame?
Set RDY bit Set RDY bit
Wait for 1CAN data bits Wait for 1CAN data bits
Set TRQ bit Set TRQ bit
Message buffer redefinition during transmission
User's Manual U18743EE1V2UM00
START START
No No
RDY = 0? RDY = 0?
Yes Yes
Remote frame Remote frame
Set CnMDLCm register Set CnMDLCm register
Set RTR bit of CnMCONFm Set RTR bit of CnMCONFm
register register
Set CnMIDLm and CnMIDHm Set CnMIDLm and CnMIDHm
registers registers
No No
Transmit? Transmit?
Yes Yes
END END
Chapter 18
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