Datasheet

Section 15 Serial Communication Interface (SCI)
Rev. 6.00 Mar. 18, 2010 Page 564 of 982
REJ09B0054-0600
Bit Bit Name
Initial
Value R/W Description
5 ORER 0 R/(W)
*
1
Overrun Error
Indicates that an overrun error occurred during
reception, causing abnormal termination.
[Setting condition]
When the next serial reception is completed while
RDRF = 1
The receive data prior to the overrun error is
retained in RDR, and the data received
subsequently is lost. Also, subsequent serial
reception cannot be continued while the ORER flag
is set to 1. In clocked synchronous mode, serial
transmission cannot be continued either.
[Clearing condition]
When 0 is written to ORER after reading ORER =
1
The ORER flag is not affected and retains its
previous state when the RE bit in SCR is cleared to
0.
4 FER 0 R/(W)
*
1
Framing Error
Indicates that a framing error occurred during
reception in asynchronous mode, causing
abnormal termination.
[Setting condition]
When the stop bit is 0
In 2 stop bit mode, only the first stop bit is checked
for a value to 1; the second stop bit is not checked.
If a framing error occurs, the receive data is
transferred to RDR but the RDRF flag is not set.
Also, subsequent serial reception cannot be
continued while the FER flag is set to 1. In clocked
synchronous mode, serial transmission cannot be
continued, either.
[Clearing condition]
When 0 is written to FER after reading FER = 1
In 2-stop-bit mode, only the first stop bit is
checked.
The FER flag is not affected and retains its
previous state when the RE bit in SCR is cleared to
0.