Altera Cyclone II FPGA Starter Development Board Manuale Utente Scaricare il pdf (Pagina 17)

Altera Corporation Reference Manual 1–9

October 2006 Cyclone II FPGA Starter Development Board

Introduction

■ A switch produces logic 0 when in the DOWN

(closest to the edge of the board) position

and logic 1 when in the UP position

Clock Inputs

■ 50-MHz oscillator

■ 27-MHz oscillator

■ 24-MHz oscillator

■ SMA external clock input

Audio CODEC

■ Wolfson WM8731 24-bit sigma-delta audio CODEC

■ Line-level input, line-level output, and microphone input jacks

■ Sampling frequency: 8 to 96 KHz

■ Applications for MP3 players and recorders, PDAs,

smart phones, voice recorders

VGA Output

■ Uses a 4-bit resistor-network DAC

■ 15-pin high-density D-sub connector

■ Supports up to 640x480 at 60-Hz refresh rate

■ Can be used with the Cyclone II FPGA to implement

a high-performance TV encoder

Serial Ports

■ One RS-232 port

■ One PS/2 port

■ DB-9 serial connector for the RS-232 port

■ PS/2 connector for connecting a PS2 mouse

or keyboard to the board

Dual 40-Pin Expansion Headers

■ 72 Cyclone II I/O pins and 8 power and ground lines

connect to two, 40-pin expansion connectors

■ 40-Pin header designed to accept a standard 40-pin

ribbon cable used for IDE hard drives

■ Resistor protection provided

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Altera Cyclone II FPGA Starter Development Board Manuale Utente Pagina 17