Panasonic MN103001G/F01K User Manual
Page 311
Serial Interface
13-9
Serial 0 reception buffer
Register symbol: SC0RXB
Address:
x'34000809
Purpose:
This register reads in the reception data of serial interface 0.
Bit No.
7
6
5
4
3
2
1
0
Bit
SC0
SC0
SC0
SC0
SC0
SC0
SC0
SC0
name
RXB7 RXB6 RXB5 RXB4 RXB3 RXB2 RXB1 RXB0
Reset
0
0
0
0
0
0
0
0
Access
R
R
R
R
R
R
R
R
Reception data is gotten by reading this buffer at the end of reception.
In the case of a 7-bit transfer, the MSB (bit 7) is "0".
Serial 0 status register
Register symbol: SC0STR
Address:
x'3400080C
Purpose:
This register indicates the status of serial interface 0.
Bit No.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bit
-
-
-
-
-
-
SC0
SC0
SC0
SC0
SC0
SC0
-
SC0
SC0
SC0
name
SPF
STF
TXF
RXF
TBF
RBF
FEF
PEF
OEF
Reset
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Access
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Bit No.
Bit name
Description
0
SC0OEF
Overrun error indication
0: No error
1: Overrun error occurred
1
SC0PEF
Parity error indication
0: No error
1: Parity error occurred
2
SC0FEF
Framing error indication
0: No error
1: Framing error occurred
3
—
"0" is returned when this bit is read.
4
SC0RBF
Reception buffer status indication
0: Reception buffer empty
1: Data exists in the reception buffer
5
SC0TBF
Transmission buffer status indication
0: Transmission buffer empty
1: Data exists in the transmission buffer
6
SC0RXF
Reception status indication
0: Waiting for reception
1: Reception in progress
7
SC0TXF
Transmission status indication
0: Ready for transmission
1: Transmission in progress
8
SC0STF
I2C start sequence detection
(Cleared by reading SC0RXB or by writing SC0TXB)
0: Not detected
1: Detected
9
SC0SPF
I2C stop sequence detection
(Cleared by reading SC0RXB or by writing SC0TXB)
0: Not detected
1: Detected
15 to 10
—
"0" is returned when these bits are read.