r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1085

• Manufacturer Part Number: r8a77850anbg
• Description: Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

21.3.7
SCFSR is a 16-bit register that consists of status flags that indicate the operating status of the
SCIF.
SCFSR can be always read from or written to by the CPU. However, 1 cannot be written to the
ER, TEND, TDFE, BRK, RDF, and DR flags. Also note that in order to clear these flags they
must be read as 1 beforehand. The FER flag and PER flag are read-only flags and cannot be
modified.
Initial value:
Bit
15 to 8
R/W:
BIt:
Serial Status Register n (SCFSR)
Note: * Only 0 can be written to clear the flag.
Bit Name
—
15
⎯
R
0
14
⎯
R
0
13
⎯
R
0
Initial
Value
All 0
12
⎯
R
0
11
⎯
R
0
R/W
R
10
⎯
R
0
Description
Reserved
These bits are always read as 0. The write value
should always be 0.
⎯
R
9
0
21. Serial Communication Interface with FIFO (SCIF)
⎯
R
8
0
R/W*
ER
7
0
Rev.1.00 Jan. 10, 2008 Page 1055 of 1658
TEND
R/W*
6
1
TDFE
R/W*
5
1
R/W*
BRK
4
0
FER
R
3
0
REJ09B0261-0100
PER
R
2
0
R/W*
RDF
1
0
R/W*
DR
0
0