Datasheet

Section 14 Serial Communication Interface (SCI)
Rev.6.00 Sep. 27, 2007 Page 638 of 1268
REJ09B0220-0600
Table 14.11 Receive Error Conditions
Receive Error Abbreviation Condition Data Transfer
Overrun error ORER When the next data reception is
completed while the RDRF flag
in SSR is set to 1
Receive data is not
transferred from RSR to
RDR
Framing error FER When the stop bit is 0 Receive data is transferred
from RSR to RDR
Parity error PER When the received data differs
from the parity (even or odd) set
in SMR
Receive data is transferred
from RSR to RDR
Figure 14.8 shows an example of the operation for reception in asynchronous mode.
RDRF
FER
0
1 frame
D0 D1 D7 0/1 1 0 D0 D1 D7 0/1
0
1 1
DataStart
bit
Parity
bit
Stop
bit
Start
bit
Data Parity
bit
Stop
bit
RXI interrupt
request
generated
ERI interrupt request
generated by framing
error
Idle state
(mark state)
RDR data read and RDRF
flag cleared to 0 in RXI
interrupt handling routine
Figure 14.8 Example of SCI Receive Operation
(Example with 8-Bit Data, Parity, One Stop Bit)