Hardware Reference Manual
Connector Pinouts
41
CONNECTOR PINOUTS
TB1 (JPWR): Power Supply
(4-Pin Terminal Block)
Top View
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 PMAC 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.
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