PMAC-PC Hardware Reference
PMAC-PCI Base Board Connector Pinouts 47
J5: I/O Port Connector
J5 JOPT (34-Pin Connector)
Low-TRUE (sinking);
High-TRUE (sourcing)
+V = +5V to +24V
+5V out from PMAC, +5 to +24V in
from external source, diode, isolation
from PMAC
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.