Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 20 CAN CONTROLLER
R01UH0042EJ0500 Rev.5.00 Page 1021 of 1513
Aug 12, 2011
Figure 20-40 shows the processing for a transmit message buffer during transmission (MT2 to MT0 bits of C0MCONFm
register = 000B).
Figure 20-40. Message Buffer Redefinition during Transmission
START
END
RDY = 0?
No
Ye s
Remote frame
Data frame
Transmit abort process
Transmit?
= 1
Ye s
Wait for 1CAN data bits
No
START
END
RDY bit = 0?
No
Ye s
Data frame or remote frame?
Set RDY bit.
SET_RDY bit = 1
CLEAR_RDY bit = 0
Set C0MDATAxm,
C0MDLCm registers.
Clear RTR bit of C0MCONFm
register.
Set C0MIDLm and C0MIDHm
registers.
Set C0MDLCm register.
Set RTR bit of C0MCONFm
register.
Set C0MIDLm and C0MIDHm
registers.
Remote frame
Data frame
Transmit abort process
Clear RDY bit.
SET_RDY bit = 0
CLEAR_RDY bit = 1
Transmit?
Set TRQ bit.
SET_TRQ bit = 1
CLEAR_TRQ bit = 0
Ye s
Wait for a 1-bit period of CAN data.
No