HD6417751 Datasheet, PDF (712/1105 Pages) Renesas Technology Corp – SuperH RISC engine

Error handling
No
ORER = 1?
Yes
Overrun error handling
No
ER = 1?
Yes
Receive error handling
1. Whether a framing error or parity error
has occurred in the receive data read
from SCFRDR2 can be ascertained
from the FER and PER bits in
SCFSR2.
2. When a break signal is received,
receive data is not transferred to
SCFRDR2 while the BRK flag is set.
However, note that the last data in
SCFRDR2 is H'00 (the break data in
which a framing error occurred is
stored).
No
BRK = 1?
Yes
Break handling
No
DR = 1?
Yes
Read receive data in SCFRDR2
Clear DR, ER, BRK flags
in SCFSR2,
and ORER flag in SCLSR2, to 0
End
Figure 16.11 Sample Serial Reception Flowchart (2)
Rev. 3.0, 04/02, page 672 of 1064