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Section 15 Serial Communication Interface with FIFO
Page 758 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
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
•
Whether a framing error or parity error
has occurred in the receive data that
is to be read from the receive FIFO
data register (SCFRDR) can be
ascertained from the FER and PER
bits in the serial status register
(SCFSR).
•
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 15.8 Sample Flowchart for Receiving Serial Data (cont)