Altera Arria V GX Starter Board - Manual (Page 31)

Chapter 2: Board Components 2–23
General User Input/Output
November 2013 Altera Corporation Arria V GX Starter Board
Reference Manual
General User Input/Output
This section describes the user I/O interface to the FPGA, including the push buttons,
DIP switches, LEDs, and character LCD.
User-Defined Push Buttons
The starter board includes three user-defined push buttons. For information on the
system and safe reset push buttons, refer to
“Setup Elements” on page 2–17 .
Board references S5, S6, and S7 are push buttons that allow you to interact with the
Arria V GX. When you press and hold down the switch, the device pin is set to logic 0;
when you release the switch, the device pin is set to logic 1. There are no
board-specific functions for these general user push buttons.
Table 2–18 lists the user-defined push button schematic signal names and their
corresponding Arria V GX device pin numbers.
Table 2–19 lists the user-defined push button component reference and the
manufacturing information.
X3
100 MHz crystal oscillator,
±50 ppm, CMOS, 2.5 V
Silicon Labs 510GBA100M000BAGx www.silabs.com
X4
50 MHz crystal oscillator,
±50 ppm, CMOS, 2.5 V
Silicon Labs 510GBA50M0000BAGx www.silabs.com
X2
125 MHz crystal oscillator,
±50 ppm, LVDS, 2.5 V
Silicon Labs 511FBA125M000BAGx www.silabs.com
Table 2–17. Crystal Oscillator Component References and Manufacturing Information
Board
Reference
Description Manufacturer
Manufacturer
Part Number
Manufacturer Website
Table 2–18. User-Defined Push Button Schematic Signal Names and Functions
Board Reference
Schematic Signal
Name
Arria V GX Pin
Number
I/O Standard Description
S5 USER_PB0 A14 2.5-V
User-defined push buttons S6 USER_PB1 B15 2.5-V
S7 USER_PB2 B14 2.5-V
Table 2–19. User-Defined Push Button Component Reference and Manufacturing Information
Board Reference Description Manufacturer
Manufacturer
Part Number
Manufacturer Website
S5 to S7 Push button Dawning Precision Co. TS-A02SA-2-S100 www.dawning2.com.tw