Altera Nios Development Board Stratix II Edition Uživatelský manuál stáhnout pdf (Strana 37)

Altera Corporation Reference Manual 2–27

May 2007 Nios Development Board Stratix II Edition

Board Components

Figure 2–11. PMC Connector

The PMC connector supplies +3.3 V, +5.0 V and ±12. V, 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 from the

development board to prevent the two power supplies from

interfering with each other. Refer to “Power-Supply Circuitry”

on page 2–44 for more information.

Table 2–14. 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

Pin 1

JH2

JH1

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 61 62

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Altera Nios Development Board Stratix II Edition Uživatelský manuál Strana 37