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Overview

The Digilab 2 development board (the D2)

features the Xilinx Spartan 2 XC2S200 FPGA

circuit board and provides an inexpensive and

expandable platform on which to design and

implement digital circuits of all kinds. D2

board features include:

• A Xilinx XC2S200 FPGA;

• Dual on-board 1.5A power regulators

(2.5V and 3.3V);

• A socketed 50MHz oscillator;

• An EPP-capable parallel port for JTAG-

based FPGA programming and user data

transfers;

• A 5-wire Rs-232 serial port;

• A status LED and pushbutton for basic

I/O;

• Six 100-mil spaced, right-angle DIP

socket 40-pin expansion connectors.

The D2 board has been designed specifically to

work with Xilinx ISE CAD tools, including the

free WebPack tools available from the Xilinx

website. Like other Spartan 2 boards in the

Digilab family, the D2 board has been

partitioned so that only the hardware required

for a particular project need be purchased.

Several existing peripheral boards that mate

with the expansion connectors are currently

available (see www.digilentinc.com), and new

boards are frequently added. The low-cost,

standard expansion connectors allow new

peripheral boards, including wire-wrap or

manually soldered boards, to be quickly

designed and used. The D2 board ships with a

power supply and programming cable, so

designs can be implemented immediately

without the need for any additional hardware.

Functional description

The Digilab D2 board has been designed to offer an unembellished, low-cost system for designers who

need a flexible platform to gain exposure to the Spartan 2 device, or for those who need to rapidly

prototype FPGA-based designs. The D2 board provides only the essential supporting devices for the

Spartan 2, and routes all available FPGA signals to standard expansion connectors. Included on the

board are 2.5VDC and 3.3VDC regulators, a JTAG configuration circuit that uses a standard parallel

50MHz

CLK

Xilinx Spartan2

XC2S200-PQ208

Power

jack

5-9VDC

2.5VDC

regulator

Status

LED

Expansion E Expansion F

Expansion C Expansion D

Serial PortParallel Port

Port/prog

control

switch

Expansion A Expansion B

EPP or SPP

parallel port

JTAG

Port

Serial

Port

Push

button

Buffer

RS-232

converter

SPROM

3.3VDC

regulator

D2 circuit board block diagram

1 2 3 4 5 6 7 8 9 10

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Seite 3 - Front view

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Digilent Digilab 2 Bedienungsanleitung

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