Altera Nios Cyclone II Edition Reference Manual page 39

Altera Corporation
May 2007
Figure 2–11. PMC Connector
The PMC connector supplies +3.3V, +5V and +/- 12V, as required by the
PCI specification. However, DC power regulators for these supplies
cannot provide enough power to fully satisfy the PCI power specification.
The current that the board can supply through JH1 and JH2 is dependent
on the design configured in the FPGA. As a general guideline, if the PMC
card power requirements exceed the specifications shown in
you must connect an external power source.
Table 2–14. PMC Card Power Specifications
DC Supply Maximum Power
+3.3V 9.5 Watts
+5V 15 Watts
+12V 45 Watts
-12V 1.2 Watts
w When connecting an external power supply, the fuse for the
corresponding voltage should be removed to prevent the two
power supplies from interfering with each other. Refer to
"Power-Supply Circuitry" on page 2–44
Table 2–15 lists the connections between the PMC connector and the
FPGA.
Table 2–15. PMC Connector Pin Table
FPGA Pin JH1 & JH2 Pin
L20 61
L21 60
Reference Manual
Pin 1
Pin 1
JH1
JH2
Apply External Power Source
J29
J28
J31
TP13
for more information.
Connector Board Net Name
JH1 pmc_ad0
JH1 pmc_ad1
Nios Development Board Cyclone II Edition
Board Components
Table 2–14,
2–27