Hitachi H8S/2633 Hardware Manual page 699

Initialization
Start transmission
ERS=0?
No
TEND=1?
Write data to TDR,
and clear TDRE flag
in SSR to 0
No
All data transmitted?
ERS=0?
No
TEND=1?
Clear TE bit to 0
Figure 17-4 Example of Transmission Processing Flow
Start
No
Yes
Yes
Yes
No
Yes
Yes
End
Error processing
Error processing
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