Reference Manual

PMAC-PC Hardware Reference
PMAC-PCI Base Board Connector Pinouts 45
J5: I/O Port Connector
J5 JOPT (34-Pin Connector)
Front View
Pin # Symbol Function Description Notes
1 MI8 Input Machine input 8 Low is TRUE
2 GND Common PMAC common
3 MI7 Input Machine input 7 Low is TRUE
4 GND Common PMAC common
5 MI6 Input Machine input 6 Low is TRUE
6 GND Common PMAC common
7 MI5 Input Machine input 5 Low is TRUE
8 GND Common PMAC common
9 MI4 Input Machine input 4 Low is TRUE
10 GND Common PMAC common
11 MI3 Input Machine input 3 Low is TRUE
12 GND Common PMAC common
13 MI2 Input Machine input 2 Low is TRUE
14 GND Common PMAC common
15 MI1 Input Machine input 1 Low is TRUE
16 GND Common PMAC common
17 MO8 Output Machine output 8 Low-TRUE (sinking);
High-TRUE (sourcing)
18 GND Common PMAC common
19 MO7 Output Machine output 7 " "
20 GND Common PMAC common
21 MO6 Output Machine output 6 " "
22 GND Common PMAC common
23 MO5 Output Machine output 5 " "
24 GND Common PMAC common
25 MO4 Output Machine output 4 " "
26 GND Common PMAC common
27 MO3 Output Machine output 3 " "
28 GND Common PMAC common
29 MO2 Output Machine output 2 " "
30 GND Common PMAC common
31 MO1 Output Machine output 1 " "
32 GND Common PMAC common
33 +V Input/
Output
+V power I/O +V = +5V to +24V
+5V out from PMAC, +5 to +24V in
from external source, diode, isolation
from PMAC
34 GND Common PMAC common
This connector provides means for eight general-purpose inputs and eight general-purpose outputs. Inputs and
outputs may be configured to accept or provide either +5V or +24V signals. Outputs can be made sourcing
with an IC (U13 to UDN2981) and jumper (E1 & E2) change. E7 controls whether the inputs are pulled up or
down internally. Outputs are rated at 100mA per channel.