Altera Arria GX, Справочное руководство

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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