Omega Engineering OMG-PCI-DIO48 User Manual
Page 22
Technical Description
OMG-PCI-DIO48
Page 18
Control Words
n = control word for port1 or 2
I/O Configuration
CWnD0
Port C1 lower nibble (bits 0-3)
1 = input
0 = output
1 on power up
CWnD1
Port B1
1 = input
0 = output
1 on power up
CWnD2
0 or 1 (no effect)
CWnD3
Port C1 upper nibble (bits 4-7)
1 = input
0 = output
1 on power up
CWnD4
Port A1
1 = input
0 = output
1 on power up
CWnD5
0 or 1 (no effect)
CWnD6
0 or 1 (no effect)
CWnD7
Always a 1
Control Word (X = 0)
Hex Value
Port Setup
7
6
5
4
3
2
1
0
A
B
C Upper
C Lower
1
X
X
0
0
X
0
0
80
Out
Out
Out
Out
1
X
X
0
0
X
0
1
81
Out
Out
Out
In
1
X
X
0
0
X
1
0
82
Out
In
Out
Out
1
X
X
0
0
X
1
1
83
Out
In
Out
In
1
X
X
0
1
X
0
0
88
Out
Out
In
Out
1
X
X
0
1
X
0
1
89
Out
Out
In
In
1
X
X
0
1
X
1
0
8A
Out
In
In
Out
1
X
X
0
1
X
1
1
8B
Out
In
In
In
1
X
X
1
0
X
0
0
90
In
Out
Out
Out
1
X
X
1
0
X
0
1
91
In
Out
Out
In
1
X
X
1
0
X
1
0
92
In
In
Out
Out
1
X
X
1
0
X
1
1
93
In
In
Out
In
1
X
X
1
1
X
0
0
98
In
Out
In
Out
1
X
X
1
1
X
0
1
99
In
Out
In
In
1
X
X
1
1
X
1
0
9A
In
In
In
Out
1
X
X
1
1
X
1
1
9B
In
In
In
In
Figure 11-Control Words