HD6417660 RENESAS [Renesas Technology Corp], HD6417660 Datasheet - Page 488

• Manufacturer Part Number: HD6417660
• Description: Renesas 32-Bit RISC Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

16.3.8
SCSSR is a 16-bit readable/writable register that indicates the SCIF status.
However, 1 cannot be written to the ORER, TSF, ER, TDFE, BRK, RDF, and DR flags. Also note
that in order to clear these flags to 0, they must be read as 1 beforehand. The TEND, FER, and
PER flags are read-only flags and cannot be modified.
Rev. 1.00, 02/04, page 450 of 804
Bit
15 to 10 
9
Bit Name
ORER
Serial Status Register (SCSSR)
Initial
Value R/W
All 0
0
R
R/(W)* Overrun Error Flag
Description
Reserved
These bits are always read as 0. The write value should
always be 0. If 1 is written to these bits, correct operation
cannot be guaranteed.
Indicates that an overrun error occurred during reception.
This bit is only valid in asynchronous mode.
0: Reception in progress, or reception has ended
[Clearing conditions]
•
•
1: An overrun error occurred during reception*
[Setting condition]
When serial reception is completed while receive FIFO is full
Notes: 1. The ORER flag is not affected and retains its
successfully*
Power-on reset or manual reset
When 0 is written to ORER after reading ORER = 1
2. The receive data prior to the overrun error is
previous state when the RE bit in SCSCR is
cleared to 0.
retained in SCFRDR, and the data received
subsequently is lost. Serial reception cannot be
continued while the ORER flag is set to 1.
1
2