Altera Nios Development Board Cyclone II Edition - Manual (Page 39)

Altera Corporation Reference Manual 2–27
May 2007 Nios Development Board Cyclone II Edition
Board Components
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
Table 2–14 ,
you must connect an external power source.
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 for more information.
Table 2–15 lists the connections between the PMC connector and the
FPGA.
Table 2–14. PMC Card Power Specifications
DC Supply Maximum Power Apply External Power Source
+3.3V 9.5 Watts J29
+5V 15 Watts J28
+12V 45 Watts J31
-12V 1.2 Watts TP13
Table 2–15. PMC Connector Pin Table
FPGA Pin JH1 & JH2 Pin Connector Board Net Name
L20 61 JH1 pmc_ad0
L21 60 JH1 pmc_ad1
Pin 1
Pin 1
JH2
JH1