UPD78F9234MC-5A4-A Datasheet, PDF (208/419 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 11 SERIAL INTERFACE UART6
Figure 11-16 shows an example of the continuous transmission processing flow.
Figure 11-16. Example of Continuous Transmission Processing Flow
Set registers.
Write TXB6.
Transfer
executed necessary ^Yes
number of times?
No
Read ASIF6
No
TXBF6 = 0?
Yes
Write TXB6.
Transmission
No
completion interrupt
occurred?
Yes
Transfer
executed necessary
Yes
number of times?
No
Read ASIF6
No
TXSF6 = 0?
Yes
CompletYioensof
transmission processing
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)
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User’s Manual U17446EJ5V0UD