CHAPTER 14 ASYNCHRONOUS SERIAL INTERFACE (UART)
User’s Manual U16896EJ2V0UD
412
Figure 14-4. Continuous Transmission Processing Flow
Set registers
Interrupt occurrence
Wait for interrupt
Required
number of transfers
performed?
Write transmit data to
TXBn register
Write second byte transmit
data to TXBn register
Write transmit data to
TXBn register
When reading
ASIFn register,
TXBFn = 0?
When reading
ASIFn register,
TXSFn = 1?
When reading
ASIFn register,
TXSFn = 0?
No
No
No
No
Yes
Yes
Yes
Yes
End of transmission
processing