Digilent D2-SB Bedienungsanleitung PDF herunterladen

www.digilentinc.com

June 4, 2004 246 East Main | Pullman, WA 99163

(509) 334 6306 Voice and Fax

Overview

The Digilent D2-SB circuit board provides a

complete circuit development platform

centered on a Xilinx Spartan 2E FPGA. D2-SB

features include:

• A Xilinx XC2S200E-200 FPGA with 200K

gates and 350MHz operation;

• 143 user I/Os routed to six standard 40-

pin expansion connectors;

• A socket for a JTAG-programmable

18V02 configuration Flash ROM;

• Dual on-board 1.5A power regulators

(1.8V and 3.3V);

• An SMD 50MHz oscillator, and a socket

for a second oscillator;

• A JTAG programming port;

• A status LED and pushbutton for basic

I/O.

The D2-SB has been designed to work

seamlessly with all versions of the Xilinx ISE

CAD tools, including the free WebPack tools

available from the Xilinx website. A growing

collection of low-cost expansion boards can be

used with the D2-SB to add analog and digital

I/O capabilities, as well as various data ports

like Ethernet and USB. The D2-SB 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-SB provides a minimal system

that can be used to rapidly implement FPGA-

based circuits, or to gain exposure to Xilinx

CAD tools and Spartan 2E devices. The D2-SB

provides only the essential supporting devices

for the Spartan 2E FPGA, including clock

sources and power supplies. All available I/O

signals are routed to standard expansion

connectors that mate with 40-pin, 100 mil

spaced DIP headers available from any

catalog distributor. A pushbutton and LED are

also included for basic I/O. (See Figure 1)

The D2-SB board has been designed to serve

primarily as a host for peripheral boards. Each

of the six expansion connectors provides the

unregulated supply voltage (VU), 3.3V, GND,

and 32 FPGA I/O signals. Because there are

more connector pins than FPGA pins, the A1,

B1 and C1 connectors share an 18-pin “system

bus”, and not all pins on the B expansion

connectors are used. JTAG signals are also

routed to the A1, B1, and C1 expansion

connectors. This allows peripheral boards to

drive the scan chain, or to be configured along

with the Spartan 2E FPGA.

Application-specific peripheral boards can be

created to mate with the D2-SB, or ready-

made peripheral boards that offer many

A2 B2 C2

Xilinx Spartan2E XC2S200E-PQ208

Expansion Connectors

System Bus

JTAG

MA1 bus

MB1 bus

MC1 bus

PA bus

MA2 bus

PB bus

MC2 bus

PC bus

Clock

(50MHz)

Power

jack

5-9VDC

1.8VDC

regulator

LED

Push

button

Config

ROM

3.3VDC

regulator

Clock

JTAG

Figure 1. D2-SB Circuit Board Block Diagram

1 2 3 4 5 6 7

Inhaltsverzeichnis

Seite 1 - 7 pages Doc: 502-023

DDiiggiilleenntt DD22--SSBB SSyysstteemm BBooaarrdd RReeffeerreennccee MMaannuuaall www.digilentinc.com June 4, 2004 246 East Main | Pullman, W

Seite 2

D2-SB Reference Manual Digilent, Inc. www.digilentinc.com © Digilent, Inc. Page 2 standard functions can be obtained from Digilent (see www.dig

Seite 3 - Spartan 2E

D2-SB Reference Manual Digilent, Inc. www.digilentinc.com © Digilent, Inc. Page 3 Total board current is dependant on FPGA configuration, cloc

Seite 4 - Read Cycle

D2-SB Reference Manual Digilent, Inc. www.digilentinc.com © Digilent, Inc. Page 4 System Bus The “system bus” is a protocol used by certain e

Seite 5

Seite 6 - A1 A2 B1 B2 C1 C2

D2-SB Reference Manual Digilent, Inc. www.digilentinc.com © Digilent, Inc. Page 6 Table 2. D2-SB Expansion Connector Pinout A1 A2 B1 B2

Seite 7

D2-SB Reference Manual Digilent, Inc. www.digilentinc.com © Digilent, Inc. Page 7 Table 3. FPGA Pin Assignments Pin # Function Pin # Funct

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