Enterpoint Broaddown2 Manual de usuario

Broaddown2 User Manual

Issue – 1.02

Kit Contents

You should receive the following items with you Broaddown2 development kit:

1 - Broaddown2 Board

Figure 1 - Broaddown2 Board

Fore word

PLEASE READ ALL OF THIS MANUAL BEFORE PLUGGING IN

OR POWERING UP YOUR BROADDOWN2. PLEASE TAKE

SPECIAL NOTE OF THE WARNINGS WITHIN THE MANUAL.

Trademark s

Coolrunner-II, Spartan-3, ISE, EDK, Webpack, Xilinx are the registered trademarks of Xilinx Inc,

San Jose, California, U S.

Moel-Bryn, Broaddown2 are trademarks of Enterpoint Ltd.

Introduction

Welcome to your Broaddown2 the “Ultimate Spartan-3 Development Board”.

Broaddown2 is a member of Enterpoint’s Moel-Bryn product range and offers a

highly flexible approach to prototyping FPGA and System designs.

The aim of this manual is assist in using the main features of Broaddown2. There are

features such as regulator shutdowncontrol and advanced programming features that

are beyond the scope of this edition of the manual. Should you have a need to use

these features then please contact the support email support@enterpoint.co.uk for

detailed instructions to use these advanced features.

Broaddown2 comes in 3 principal variants based on the size of FPGA fitted. The

Spartan-3 fitted can either be XC3S400-4FG456C, XC3S1000-4FG456C, or

XC3S1500-4FG456C. Should you need the faster -5, industrial or automotive grade

FPGA’s fitted to a board please contact Enterpoint sales for a quote.

In addition to these principal variants Broaddown-2 has build options for LVDS

termination resistors and YFS connectors. Please contact sales for a quote if you

require these options.

Broaddown2 modules that are now available to purchase:

A/D Converter (DIL Header Module)

Low Cost Programming Cable (Standalone)

SODIMM I/O Expansion Module

PCI I/O Expansion Module

RS232 Module

RS485 Module

USB2 Module

LED 4 Segment Display Module

PS2 Module

Ethernet Phy Module

AD7202 Module

We can also offer custom DIL Header modules should you require a function not

covered by our current range of modules. Typical turn around for this service is 2-4

weeks if parts can be obtained in time.

Finding Your Way Around

Figure 2 - Front Side of Broaddown2

Figure 3 - Back Side of Broaddown2

Getting Started

Your Broaddown2 will be supplied pre-programmed with a test design. A default setting of jumpers

will also be fitted. The test design will allow the user to determine that most of the major elements

of the Broaddown2 are working. To use this test you must do the following:

(1) Ensure that the LHS DIL Power Selector is set at the 3.3V position (factory default).

(3) Connect the Broaddown2 to your power source (un-powered) by the disk drive power connector

or by plugging into a PCI slot within a Personal Computer (un-powered). Please note that plugging

into a Personal Computer should only be done by an experienced system administrator. As with the

addition of any new element to a computer there is a possibility that plugging your Broaddown2

into a computer PCI slot may cause data corruption or loss. You should ensure that adequate

backups of data or systems are made before attempting this step. If you do not have a valid PCI

supporting design loaded in the FPGA on the board it is likely to freeze the supporting computer.

(4) Switch on your power source.

Figure 4 - Broaddown2 with LED/USB Module and DIP Switch fitted.

The flash memory/s can be re-programmed at any time using the appropriate JTAG interface. You

will need a JTAG programming cable PROG1/2, or Xilinx Parallel IV, or Xilinx USB programming

cables (flying leads needed) together with Xilinx ISE tools to re-program the Platform Flash

devices.

Broaddown2 Features

Power Inputs

Broaddown2 can take current from either the PCI edge connector or the Disk Drive Connector at

the top left of the card. The power supplies on the PCI edge connector can be isolated by jumpers

J24 and J30 should a power supply contention issue arise. It is recommended that for currents

greater than 2 amps on the 5V input and 0.5 amp on the 12V rail then the disk drive connector

should be used.

The principal input to Broaddown2 is the 5V input. The 12V input is only used to feed the Negative

Voltage Rail circuits and for the M oel-Bryn expansion position.

Reset-able poly-fuses are fitted to both the 5V and 12V inputs. Respective notional ratings of 7

amps and 3 amps are the limits of power input. The actual trip currents of these devices will vary

with cooling and ambient temperature and hence the operational cut-offs may be much lower that

these figures.

WARNING – THE POLY-FUSES CAN GET VERY HOT IN

NORMAL OPERATION. PLEASE DO NOT TOUCH OR PLACE

HIGHLY FLAMABLE MATERIALS NEAR THESE DEVICES

WHILST THE BROADDOWN2 IS IN OPERATION.

Power Pickups

Figure 5 - Broaddown2 Power Pickup Points

WARNING – DO NOT CONNECT ANY VOLTAGE HIGHER

THAT 3.3V TO THE SPARTAN-3 I/O PINS. TAKE GREAT CARE

THAN CIRCUITS POWERED FROM VOLTAGES HIGHER THAN

3.3V DO NOT DRIVE SIGNALS CONNECTED TO SPARTAN-3 TO

A SIGNALLING VOLTAGE GREATER THAN 3.3V.

Broaddown2 has power pickup points. Each pickup normally consists of a 3 pin 2mm header

although some other types of pick-up are available on Broaddown2. The pinout of the 3 pin pickup

points is usually defined as:

Pin1 - Voltage O/P

Pin2 - Isolated

Pin3 - Gnd (0V)

In addition to these pickup points power can be picked up from LHS DIL Header, RHS DIL

Header, Bank Voltage Selector J26 and Vref Voltage Selector J15. Please see the relevant sections

for more details on these features.

The voltages that are available on 3 pin pickup points are as in the following table.

Voltage Header Note

12V J34

5V J33

4.1V J39

3.3V J38

2.5V J37

1.8V J36

1.5V J10

1.2V J9

User1 Rail J7 Potentiometer socket, Pin2

not isolated

User2 Rail J6 Potentiometer socket, Pin2

not isolated. Rail may need

to be turned on by CPLD

output.

Selecting FPGA Bank (Vcciox) + Main SODIMM Voltages

Broaddown2 divides the I/O pins of the fitted Spartan-3 into 7 banks. The FPGA does natively

support 8 banks however on Broaddown2 banks 6+7 share their Vccio. The key to voltage selection

and hence support I/O standards is header J26. From this header the 7 bank voltages and SODIMM

main voltages can individually be selected from 3V, 2.5V and 1.8V. Additionally 1 extra selection

is available to each output power rail. By soldering appropriate solder bridges SB170-185 1.2V or

1.5V can be made available as levels. It is also possible to set a custom level using a flying lead to

the header but the voltage supplied should be the range +1.2V to +3.45V. Please note that the

header is not pinned out the same way for each output power rail. The pinout chosen makes it

unlikely that input power rails can be shorted together using a single jumper. The header layout and

the nearby RHS DIL Power Selector are shown below.

3.0V

2.5V

1.8V

USER SOD 3.0V

2.5 V

1.8 V

USERBK6

3.0V

2.5V

1.8 V

USER BK0 3.0V

2.5 V

1.8V

USERBK5

3.0V

2.5V

1.8V

USER BK1 3.0V

2.5 V

1.8 V

USER

BK4

3.0V

2.5V

1.8 V

USER BK2 3.0V

2.5 V

1.8V

USERBK3

3.0V

2. 5V

1. 8V

RHS

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