Section 15 Serial Communication Interface (SCI)
Rev. 1.00 Apr. 28, 2008 Page 432 of 994
REJ09B0452-0100
Table 15.12 shows the states of the SSR status flags and receive data handling when a receive
error is detected. If a receive error is detected, the RDRF flag retains its state before receiving
data. Reception cannot be resumed while a receive error flag is set to 1. Accordingly, clear the
ORER, FER, PER, and RDRF bits to 0 before resuming reception. Figure 15.9 shows a sample
flowchart for serial data reception.
Table 15.12 SSR Status Flags and Receive Data Handling
SSR Status Flag
RDRF
*
ORER
FER
PER
Receive Data
Receive Error Type
1 1 0 0 Lost
Overrun
error
0 0 1 0 Transferred
to
RDR
Framing
error
0 0 0 1 Transferred
to
RDR
Parity
error
1 1 1 0 Lost
Overrun
error
+
framing
error
1 1 0 1 Lost
Overrun
error
+
parity
error
0
0
1
1
Transferred to RDR
Framing error + parity error
1
1
1
1
Lost
Overrun error + framing error +
parity error
Note:
*
The RDRF flag retains the state it had before data reception.
Содержание H8S/2100 Series
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