Example Of Continuous Transmission Processing Flow - NEC 78K0 User Manual

Figure 15-16 shows an example of the continuous transmission processing flow.
Figure 15-16. Example of Continuous Transmission Processing Flow
Remark TXB6: Transmit buffer register 6
ASIF6: Asynchronous serial interface transmission status register 6
TXBF6: Bit 1 of ASIF6 (transmit buffer data flag)
TXSF6: Bit 0 of ASIF6 (transmit shift register data flag)
CHAPTER 15 SERIAL INTERFACE UART6
Set registers.
Write TXB6.
Transfer
Yes
executed necessary
number of times?
No
No
Read ASIF6
TXBF6 = 0?
Yes
Write TXB6.
*
Transmission
No
completion interrupt
occurs?
Yes
Transfer
Yes
executed necessary
number of times?
No
User's Manual U15947EJ2V0UD
Read ASIF6
TXSF6 = 0?
Yes
Yes
Completion of
transmission processing
No
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