Renesas SH7641 - Manual (Page 781)

Section 19 Serial Communication Interface with FIFO (SCIF)
Rev. 4.00 Sep. 14, 2005 Page 731 of 982
REJ09B0023-0400
Error handling
Receive error handling
ER = 1?
BRK = 1?
Break handling
DR = 1?
Read receive data in SCFRDR
Clear DR, ER, BRK flags
in SCFSR,
and ORER flag in SCLSR, to 0
End
Yes
Yes
Yes
No
Overrun error handling
ORER = 1?
Yes
No
No
No
[1] Whether a framing error or parity error
has occurred in the receive data that
is to be read from SCFRDR can be
ascertained from the FER and PER
bits in SCFSR.
[2] When a break signal is received,
receive data is not transferred to
SCFRDR while the BRK flag is set.
However, note that the last data in
SCFRDR is H'00, and the break data
in which a framing error occurred is
stored.
Figure 19.8 Sample Flowchart for Receiving Serial Data (cont)