HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 573

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

14.2.7
Note: * Only 0 can be written, to clear the flag.
The serial status 1 register (SC1SSR) is a 16-bit register in which the lower 8 bits consist of status
flags that indicate the operating status of the SCIF, and the upper 8 bits indicate the number of
receive errors in the data in the receive FIFO register.
SC1SSR can be read or written to at all times. However, 1 cannot be written to the ER, TDFE,
BRK, RDF, and DR status flags. Also note that in order to clear these flags to 0, they must first be
read as 1. The TEND, FER, and PER flags are read-only and cannot be modified.
SC1SSR is initialized to H'0084 by a reset, by the module standby function, and in standby mode.
Bits 15 to 12—Parity Error Count 3 to 0 (PER3 to PER0): These bits indicate the number of data
bytes in which a parity error occurred in the receive data in the receive FIFO data register.
These bits are cleared by reading all the receive data in the receive FIFO data register, or by
setting the RFRST bit to 1 in SCFCR and resetting the receive FIFO data register to the empty
state.
Bits 11 to 8—Framing Error Count 3 to 0 (FER3 to FER0): These bits indicate the number of data
bytes in which a framing error occurred in the receive data in the receive FIFO data register.
These bits are cleared by reading all the receive data in the receive FIFO data register, or by
setting the RFRST bit to 1 in SCFCR and resetting the receive FIFO data register to the empty
state.
560
Initial value:
Initial value:
Serial Status 1 Register (SC1SSR)
R/W:
R/W:
Bit:
Bit:
R/(W)*
PER3
ER
15
0
R
7
0
PER2
TEND
14
0
R
6
1
R
R/(W)*
PER1
TDFE
13
0
R
5
1
R/(W)*
PER0
BRK
12
0
R
4
0
FER3
FER
11
0
R
3
0
R
FER2
PER
10
0
R
2
0
R
R/(W)*
FER1
RDF
9
0
R
1
0
R/(W)*
FER0
DR
8
0
R
0
0