Digilent D2-SB Скачать руководство пользователя страница 1

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www.digilentinc.com

 

 Revision: September 18, 2003 

246 East Main | Pullman, WA 99163 

(509) 334 6306 Voice and Fax

 

 

Copyright Digilent, Inc. All rights reserved

 

7 pages 

Doc: 500-223 

 
 

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. 
 
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 
standard functions can be obtained from 
Digilent (see www.digilentinc.com). 

 

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

2

ND

Clock

JTAG

A1

B1

C1

 

 
 

D2-SB circuit board block diagram 

Содержание D2-SB

Страница 1: ...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 s...

Страница 2: ...present but is not to be included in the scan chain jumper shunts must be loaded at JP1 and JP2 in the Bypass ROM location to route the JTAG chain around the ROM socket If an 18V02 or larger ROM is l...

Страница 3: ...illuminated from a signal in the FPGA to verify that configuration has been successful and the pushbutton can be used to provide a basic reset function independent of other inputs The circuits are sho...

Страница 4: ...ck to enable synchronous transfers The diagrams below show signal timings assumed by Digilent to create peripheral devices However any bus and timing models can be used by modifying circuits in the FP...

Страница 5: ...4 Pin 39 Pin 40 Expansion connector pin locations A1 pins 4 21 Sys Bus 18 A2 pins 22 35 pins 4 21 pins 22 35 C2 pins 4 21 C1 pins 22 35 pins 4 21 pins 22 35 B1 pins 4 21 B2 pins 22 35 pins 4 21 pins...

Страница 6: ...95 PAI013 140 WE 95 PBI013 56 WE 95 PCI013 7 17 DB6 94 PAI014 139 DB6 94 PBI014 55 DB6 94 PCI014 6 18 OE 93 PAI015 138 OE 93 PBI015 49 OE 93 PCI015 5 19 DB7 89 PAI016 136 DB7 89 PBI016 48 DB7 89 PCI0...

Страница 7: ...B4 178 MA1 DB2 23 PC IO1 75 MB1 DB5 127 MA2 DB3 179 MA1 DB1 24 MC1 INT 76 VCCINT 128 VCCINT 180 MA1 DB0 25 GND 77 GCLK1 129 MA2 DB2 181 CSA 26 VCCO 78 VCCO 130 VCCO 182 GCLK2 27 MC1 RST 79 GND 131 GND...

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