HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 749
HD6417641
Manufacturer Part Number
HD6417641
Description
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417641.pdf
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19.3.7
The serial status register (SCFSR) is a 16-bit register. The upper 8 bits indicate the number of
receives errors in the SCFRDR data, and the lower 8 bits indicate the status flag indicating SCIF
operating state.
The CPU can always read and write to SCFSR, but cannot write 1 to the status flags (ER, TEND,
TDFE, BRK, RDF, and DR). These flags can be cleared to 0 only if they have first been read
(after being set to 1). Bits 3 (FER) and 2 (PER) are read-only bits that cannot be written. SCFSR is
initialized to H'0060 by a power-on reset.
Bit
15
14
13
12
11
10
9
8
Serial Status Register (SCFSR)
Bit Name
PER3
PER2
PER1
PER0
FER3
FER2
FER1
FER0
Initial
value
0
0
0
0
0
0
0
0
R/W
R
R
R
R
R
R
R
R
Section 19 Serial Communication Interface with FIFO (SCIF)
Description
Number of Parity Errors
Indicate the quantity of data including a parity error in
the receive data stored in the receive FIFO data
register (SCFRDR). The value indicated by bits 15 to
12 represents the number of parity errors in SCFRDR.
When parity errors have occurred in all 16-byte
receive data in SCFRDR, PER3 to PER0 show 0.
Number of Framing Errors
Indicate the quantity of data including a framing error
in the receive data stored in SCFRDR. The value
indicated by bits 11 to 8 represents the number of
framing errors in SCFRDR. When framing errors
have occurred in all 16-byte receive data in SCFRDR,
FER3 to FER0 show 0.
Rev. 4.00 Sep. 14, 2005 Page 699 of 982
REJ09B0023-0400
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