HD6417750 Datasheet, PDF (753/1039 Pages) Renesas Technology Corp – SuperH RISC engine

Framing error occurrence
Bits 7 to 0
No
in SCFDR2 = H'10?
Yes
PER or FER bit
Yes
in SCFSR2 set to 1?
No
Read receive FIFO
Normal error handling
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.
Error handling
No
Last data?
Yes
Overrun error handling
+
framing error handling
Figure 16.14 Overrun Error Flag
Rev. 6.0, 07/02, page 701 of 986