SH7018 Datasheet, PDF (264/431 Pages) Renesas Technology Corp – SuperH™ RISC engine

Initialize
(1)
Start transmitting
Read TDRE flag in SSR1
(2)
No
TDRE = 1?
Yes
Write transmit data in TDR1 and
clear TDRE flag to 0 in SSR1
All data transmitted?
Yes
Read TEND flag in SSR1
TEND = 1?
Yes
Clear TE bit to 0 in SCR1
No
(3)
No
End
Figure 12.16 Sample Flowchart for Serial Transmitting
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