Datasheet

Section 15 Serial Communication Interface (SCI, IrDA)
Rev. 4.00 Jun 06, 2006 page 429 of 1004
REJ09B0301-0400
Table 15.11 Receive Errors and Conditions for Occurrence
Receive Error Abbreviation Occurrence 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 15.8 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 15.8 Example of SCI Operation in Reception
(Example with 8-Bit Data, Parity, One Stop Bit)