D12320VF25IV Datasheet, PDF (670/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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