Altera Arria GX Development Board Manual de usuario descargar pdf (Pagina 27)

Altera Corporation Reference Manual 2–17

October 2007 Arria GX Development Board

Board Components

General User

Interfaces

To allow you to fully leverage the I/O capabilities of the Arria GX device

for debugging, control, and monitoring purposes, the following general

user interfaces are available on the board:

■ Push buttons

■ User DIP switch

■ User LEDs

■ Board-specific DIP switch

■ Board-specific LEDs

■ Status LEDs

Push Button Switches (S1, S2, S4)

Board references S1, S2, and S4 are push-buttons allowing general user

I/O interfaces to the Arria GX device.

The push buttons connect directly to user I/O pins for user

programming. Although the USER_RESET push button’s purpose is

programming, its special label is intended to encourage its use as a logic

reset signal for FPGA designs so that user designs are reset in a consistent

manner.

1 All push buttons are a logic 1 until depressed.

Table 2–13 lists the board references, schematic signal names and

corresponding Arria GX pin numbers.

125 MHz oscillator (X2) HSMA_REFCLK1_P LVDS J1

HSMA_REFCLK1_N J2

Notes to Table 2–12:

(1) Select between using the 100 MHz oscillator or the SM_CLK using CLK_SEL on the configuration DIP switch (S6).

Pin 7 in the 0n position selects SMA_CLK.

(2) CLK2_P and CLK2_N are connected to TP3 and TP4 respectively.

Table 2–12. Arria GX Development Board Clock Distribution (Part 2 of 2)

Source

Schematic

Signal Name

I/O Standard

Arria GX Pin

Number

MAX II Pin

Number

Table 2–13. Push-Button Switch Signal Names and Functions (Part 1 of 2)

Board Reference

Schematic

Signal Name

Arria GX Pin Number

S1 USER_PB0 A19

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 41 42

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