HD6433640 HITACHI [Hitachi Semiconductor], HD6433640 Datasheet - Page 331

• Manufacturer Part Number: HD6433640
• Description: H8/3644 Series Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

4
Clear bits OER, PER,
FER to 0 in SSR
error processing
error processing
Figure 10.13 Example of Data Reception Flowchart (Asynchronous Mode) (cont)
End of receive
Start receive
No
No
No
OER = 1?
PER = 1?
FER = 1?
Yes
Yes
Yes
Parity error
processing
Framing error
Overrun error
processing
processing
Break?
No
Yes
(A)
4.
If a receive error has
occurred, read bits OER,
PER, and FER in SSR to
identify the error, and after
carrying out the necessary
error processing, ensure
that bits OER, PER, and
FER are all cleared to 0.
Reception cannot be
resumed if any of these
bits is set to 1. In the case
of a framing error, a break
can be detected by reading
the value of the RXD pin.
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