SH7052 Datasheet, PDF (571/919 Pages) Renesas Technology Corp – SuperHTM RISC engine

Message transmit wait TXPR setting
Set TXCR bit corresponding to message
to be canceled
Cancellation possible?
Yes
Message not sent
Clear TXCR, TXPR
ABACK = 1
IRR8 = 1
No
Completion of message transmission
TXACK = 1
Clear TXCR, TXPR
IRR8 = 1
IMR8 = 1?
Yes
No
Interrupt to CPU
Clear TXACK
Clear ABACK
Clear IRR8
End of transmission/transmission
cancellation
: Settings by user
: Processing by hardware
Figure 15.8 Transmit Message Cancellation Flowchart
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