upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 751

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

CAN Controller (CAN)
Figure 19-40
Caution
Clear RTR bit of
CnMDATAxm register,
CnMDLCm register,
and CnMCONFm register.
Set CnMIDLm and
CnMIDHm registers.
Data frame
Transmission via interrupt (using CnLOPT register)
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.
Preliminary User’s Manual U17566EE1V2UM00
Transmit completion
interrupt processing
Clear RDY
Clear TRQ
Clear RDY
Set RDY
remote frame?
Set RDY
Set TRQ
Clear RDY bit.
RDY
Set RDY bit.
Set TRQ bit.
Data frame
Start
END
bit
or
Read CnLOPT register.
bit
Yes
= 0?
bit
bit
bit
bit
bit
= 0
= 1
= 1
= 1
= 0
= 0
No
Remote frame
Set RTR bit of
CnMDLCm register and
CnMCONFm register.
Set CnMIDLm and
CnMIDHm registers.
Chapter 19
751