PMAC-Lite Hardware Reference
Connector Pinouts
43
TB1 (JPWR): Power Supply
Pin #
Symbol
Function
Description
Notes
1 GND Common
Reference
Voltage
2
+5V
Input
Positive Supply Voltage
Supplies all PMAC digital
circuits
3
+12V
Input
Positive Supply Voltage
Ref to digital GND
4
-12V
Input
Negative Supply Voltage
Ref to digital GND
This terminal block can be used to provide the input for the power supply for the circuits on the PMAC
board when it is not in a bus configuration. When the PMAC2 is in a bus configuration, these supplies
automatically come through the bus connector from the bus power supply; in this case, this terminal block
should not be used.
If you desire to keep the optical isolation between the digital and analog circuits on PMAC, you must
provide analog power (+/-12V to +/-15V & AGND) through the JMACH connector, instead of the bus
connector or this terminal block.
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