SH7040 Datasheet, PDF (545/923 Pages) Renesas Technology Corp – Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)

Initialize
1
Start transmitting
Read TDRE bit in SSR
2
No
TDRE = 1?
Yes
Write transmission data to TDR
and clear TDRE bit in SSR to 0
All data transmitted?
3
No
Yes
Read TEND bit in SSR
No
TEND = 1?
Yes
Output break signal?
Yes
Set DR = 0
No
4
Clear TE bit in SCR to 0;
select theTxD pin as an
output port with the PFC
End transmission
Figure 14.5 Sample Flowchart for Transmitting Serial Data
507