Panasonic MN103001G/F01K User Manual
Page 345
Serial Interface
13-43
Serial 3 status register
Register symbol: SC3STR
Address:
x'3400083C
Purpose:
This register indicates the status of serial interface 3.
Bit No.
7
6
5
4
3
2
1
0
Bit
SC3
SC3
SC3
SC3
SC3
SC3
SC3
SC3
name
TXF RXF
TBF
RBF
CTS
FEF
PEF
OEF
Reset
0
0
0
0
0
0
0
0
Access
R
R
R
R
R
R
R
R
Bit No.
Bit name
Description
0
SC3OEF
Overrun error indication
0: No error
1: Overrun error occurred
1
SC3PEF
Parity error indication
0: No error
1: Parity error occurred
2
SC3FEF
Framing error indication
0: No error
1: Framing error occurred
3
SC3CTS
External pin IRQ7 status indication
"0" when IRQ7 is “L”, and "1" when “H”.
Note: When P83A of the port 8 analog/digital input control register P8AD
is “1”, IRQ7 is treated as “L” internally by the microcontroller and
reading the SC3CTS bit returns a value of “0”, regardless of the actual
values of the port pins.
4
SC3RBF
Reception buffer status indication
0: Reception buffer empty
1: Data exists in the reception buffer
5
SC3TBF
Transmission buffer status indication
0: Transmission buffer empty
1: Data exists in the transmission buffer
6
SC3RXF
Reception status indication
0: Waiting for reception
1: Reception in progress
7
SC3TXF
Transmission status indication
0: Ready for transmission
1: Transmission in progress