upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 749

• Manufacturer Part Number: upd70f3422gj-gae-qs-ax
• Description: 32-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

CAN Controller (CAN)
Figure 19-38
Caution
Clear RTR bit of
CnMDATAxm register,
CnMDLCm register, and
CnMCONFm register.
Set CnMIDLm and
CnMIDHm registers.
Data frame
Figure 19-38 shows the processing for a transmit message buffer
(CnMCONFm.MT2 to CnMCONFm.MT0 bits = 000B).
Message transmit processing (normal operation mode)
1.
2.
Preliminary User’s Manual U17566EE1V2UM00
The TRQ bit should be set after the RDY bit is set.
The RDY bit and TRQ bit should not be set at the same time.
Clear RDY
Clear RDY
Clear TRQ
Set RDY
Set RDY
remote frame?
Clear RDY bit.
Set TRQ
TRQ
RDY
Set RDY bit.
Data frame
Set TRQ bit.
START
END
bit
bit
or
bit
Yes
Yes
= 0?
bit
= 0?
bit
bit
bit
bit
= 0
= 1
= 1
= 1
= 0
= 0
No
No
Remote frame
Set RTR bit of CnMDLCm
register and CnMCONFm
register.
Set CnMIDLm and
CnMIDHm registers.
Chapter 19
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