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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