Memory clocks, General user input/output, User-defined push buttons – Altera DSP Development Kit, Stratix V Edition User Manual

Page 34: Memory clocks –26, General user input/output –26, User-defined push buttons –26

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2–26

Chapter 2: Board Components

General User Input/Output

DSP Development Kit, Stratix V Edition

July 2012

Altera Corporation

Reference Manual

Memory Clocks

The development board includes memory clocks which are driven to or received from
the on-board memory devices. For more information on the memory clock signals,
refer to the section on

“Memory” on page 2–46

Table 2–25

lists the crystal oscillators component references and manufacturing

information.

General User Input/Output

This section describes the user I/O interface to the FPGA. This section describes the
following I/O elements:

■

User-defined push buttons

■

User-defined DIP switch

■

User-defined LEDs

■

Character LCD

User-Defined Push Buttons

The development board includes three user-defined push buttons. Board references
S5, S6, and S7 are push buttons that allow you to interact with the Stratix V GS device.
When you press and hold down the push button, the device pin is set to logic 0; when
you release the push button, the device pin is set to logic 1. There is no board-specific
function for these general user push buttons.

Table 2–25. Crystal Oscillator Component References and Manufacturing Information

Board

Reference

Description

Manufacturer

Part Number

Manufacturer Website

148.50 MHz LVDS voltage
controlled crystal oscillator

Epson

EG-2121CA
125.0000M-LGPNL3

www.eea.epson.com

100 MHz 2.5-V CMOS oscillator