SH7729R Datasheet, PDF (636/855 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series

Start of reception
Read ORER, PER, FER
(1)
flags in SCSSR
Yes
BRK ∨ ER ∨ DR = 1?
No
Error handling
Read RDF flag in SCSSR
(2)
No
RDF = 1?
Yes
Read receive data from SCFRDR,
and clear RDF flag in
(3)
SCSSR to 0
No
All data received?
Yes
Clear RE bit in SCSCR to 0
End of reception
Note: Numbers in parentheses refer to steps in the preceding procedure description.
Figure 17.9 Sample Flowchart for Receiving Serial Data
Rev. 5.0, 09/03, page 590 of 806