Hitachi SH7750 Hardware Manual page 751

Framing error occurrence
Bits 7 to 0
in SCFDR2 = H'10?
Yes
PER or FER bit
in SCFSR2 set to 1?
No
Read receive FIFO
No
Last data?
Yes
Overrun error handling
+
framing error handling
No
Normal error handling
Yes
Error handling
Figure 16.14 Overrun Error Flag
Flow chart:
When flaming error (SCFSR.ER=1) is occurred, bit7 to
bit0 should be read out from SCFDR2. If bit7 to bit0
equals H'10, contents of the receive FIFO should be
read. When the data received last is not accompanied
with flaming error (SCFSR2.FER=0) both overrun error
handling and flaming error handling shoud be
conducted.
Rev. 6.0, 07/02, page 701 of 986