upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 671

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

In the normal operation with ABT, to abort transmit except transmission with ABT, using this processing
flow.
Cautions: 1. Execute transmission request abort processing by clearing the TRQ bit, not the
Figure 16-68: Transmission Abort Processing Except for ABT Transmission
2. Before making a sleep mode transition request, confirm that there is no transmis-
3. The TSTAT bit can be periodically checked by a user application or can be
4. Do not execute a new transmission request that includes other message buffers
RDY bit.
sion request left using this processing.
checked after the transmit completion interrupt.
while transmission request abort processing is in progress.
CnGMABT.CLEAR_ABTTRG = 1
CnGMABT.SET_ABTTRG = 0
CnMCTRLm.CLEAR_TRQ = 1
be aborted matches CnLOPT
CnMCTRLm.SET_TRQ = 0
Wait for 11 CAN data bits
Transmission successful
Read CnLOPT register
a
Clear ABTTRG bit
Message buffer to
User’s Manual U16702EE3V2UD00
ABTTRG = 0?
Clear TRQ bit
(Normal Operation Mode with ABT)
T
TSTAT = 0?
register?
START
Chapter 16 FCAN Controller
END
_
Yes
Yes
Yes
No
No
No
Transmit abort request
was successful
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