Altera Arria V GX FPGA Development Board - Manual (Page 39)

Chapter 2: Board Components 2–29
General User Input/Output
November 2013 Altera Corporation Arria V GX FPGA Development Board
Reference Manual
General User Input/Output
This section describes the user I/O interface to the FPGA, including the push buttons,
DIP switches, status LEDs, character LCD, and SDI video output/input port.
User-Defined Push Buttons
The development board includes three user-defined push buttons for each FPGA
device. For information on the system and safe reset push buttons, refer to
“Setup
Elements” on page 2–21 .
Board references S5, S6, and S7 are push buttons that allow you to interact with the
Arria V GX FPGA 1 while S9, S10, and S11 are for use with the Arria V GX FPGA 2.
When you press and hold down the button, the device pin is set to logic 0; when you
release the button, the device pin is set to logic 1. There are no board-specific functions
for these general user push buttons.
Table 2–25 lists the user-defined push button schematic signal names and their
corresponding Arria V GX FPGA device pin numbers.
X6 50-MHz oscillator ECS Inc. ECS-3518-500-B-xx www.ecsxtal.com
U34, U48,
U53, U52
Quad output programmable
clock generator
Silicon Labs Inc.
Si5338A-A01316-GM,
Si5338A-A01317-GM,
Si5338A-A01318-GM,
Si5338A-A01319-GM
www.silabs.com
X7
100-MHz single output
programmable oscillator
Silicon Labs Inc. 570FAB000433DG www.silabs.com
X2
148.5-MHz single output
programmable VCXO
Silicon Labs Inc. 571FDB000159DG www.silabs.com
X7 100 MHz crystal oscillator ECS Inc. ECS-3525-1000-B-TR www.ecsxtal.com
Table 2–24. Crystal Oscillator Component References and Manufacturing Information
Board
Reference
Description Manufacturer Manufacturer Part Number
Manufacturer
Website
Table 2–25. User-Defined Push Button Schematic Signal Names and Functions
Board Reference
Schematic Signal
Name
Arria V GX FPGA Pin
Number
I/O Standard Description
S6 USER1_PB0 U16.T19 2.5-V
User-defined push buttons for
FPGA 1.
S5 USER1_PB1 U16.R19 2.5-V
S4 USER1_PB2 U16.F18 2.5-V
S11 USER2_PB0 U13.D6 2.5-V
User-defined push buttons for
FPGA 2.
S10 USER2_PB1 U13.C6 2.5-V
S9 USER2_PB2 U13.K7 2.5-V