upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 755

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

CAN Controller (CAN)
Figure 19-44
Caution
Figure 19-44 shows the processing to skip resumption of transmitting a
message that was stopped when transmission of an ABT message buffer was
aborted.
Transmission abort processing (normal operation mode with ABT)
1.
2.
Preliminary User’s Manual U17566EE1V2UM00
Do not set any transmission requests while ABT transmission abort
processing is in progress.
Make a CAN sleep mode/CAN stop mode transition request after the
ABTTRG bit is cleared following the procedure shown in Figure 19-44 or
Figure 19-45. When clearing a transmission request in an area other than
the ABT area, follow the procedure shown in Figure 19-43 on page 754.
buffer whose transmission
Clear TRQ bit of message
Clear ABTTRG bit = 1
Clear ABTCLR bit = 0
Set ABTTRG bit = 0
Clear ABTTRG bit.
Set ABTCLR bit = 1
ABTTRG bit = 0?
Transmission start
Set ABTCLR bit.
Transmit abort
was aborted.
pointer clear?
START
END
Yes
Yes
No
No
Chapter 19
755