TMP91C824
91C824-65
Port 7 Register
7
6
5
4
3
2
1
0
bit Symbol
P72
P71
P70
Read/Write
R/W
Input mode
After reset
1
1
1
Port 7 Control Register
7
6
5
4
3
2
1
0
bit Symbol
P72C
P71C
P70C
Read/Write
W
0
0
0
After reset
0: IN
1: OUT
Port 7 Function Register
7
6
5
4
3
2
1
0
bit Symbol
P72F
P71F
P70F
Read/Write
W
After reset
0
Function
0: PORT
1: SCL
output
0: PORT
1:
SDA/SO
output
0: PORT
1: SCK
output
Port 7 Function Register 2
7
6
5
4
3
2
1
0
bit Symbol
P72F2
P71F2
P70F2
Read/Write
W
After reset
0
Function
Always write
to ‘0’
0: <P71F>
1: OPTTX0
SIO0 RXD
Pin select
0: RXD0(PC1)
1:OPTRX0
(P70)
P7FC
(0017H)
P7
(0013H)
P7CR
(0016H)
P7FC2
(001CH)
Port 7 ODE Register
7
6
5
4
3
2
1
0
bit Symbol
ODEP72
ODEP71
Read/Write
After reset
0
0
Function
0: 3-STATE
1: Open Drain
P7ODE
(001FH)
(note): Read-modify-write is prohibited for P7CR,P7FC, P7FC2 and P7ODE.
Figure 3.5.12 Register for Port 7