User Circuit

Supports customer-defined synchronous logic circuits.

All input signals automatically sampled, synchronized to the clock and hardened against metastability.

All output signals automatically registered.

FPGA includes over 5000 flip-flops plus logic for over 5000 four-input combinational logic functions.

Clock frequency

Clock frequency is selected and set via software, allowing circuits to be run at their maximum error free clock rate.

I/O Addressing

I/O terminals addressed in terms of Logic Module header pins. Handling of FPGA pin numbers is transparent to user.

Configuration download

One button operation, with fast download.

Flash ROM provides for circuit configuration and run at power-on with or without a Comms Card fitted.

No Load From ROM Jumper

Provides control over whether circuit will automatically configure itself and run at power-up.

Custom IP Address Jumper

Allows Comms Card network address to be set via software.

Removing the jumper activates known fixed address

Power Supply Required

Only a single supply voltage required.

On-board regulators supply 1.8Volts for FPGA core and 3.3Volts for FPGA I/O and other circuits including Comms Card.

I/O Headers

High reliability gold over nickel headers suitable for wire-wrap, IDC flat cable connectors, and header/socket connections.

Also available by arrangement, header mounted under the PCB for header/socket and direct board-to-board connections.

I/O

Each I/O pin is usable as an input, output or bidirectional connection.

I/O levels suit LVTTL and 3V3 CMOS.

5 Volt tolerance may be achieved with proper technique. See the Xilinx Answers Database entry Are Spartan-IIE I/Os 5V-tolerant? and the quoted Xilinx 5 Volt tolerance documents.

Comms Card Sockets

Special High Reliability sockets with multiple contact point redundancy.

PCB

4 layer PCB. FR4 material.

Internal ground and power planes, generously decoupled.

Bottom layer flooded with copper ground plane increases built-in decoupling capacitance. Top layer copper under major ICs provides common connection for all ground pins without vias.

Four screw-down points connected to ground but arranged with tracks that may be cut to isolate screw-downs.

Pads available for mounting regulators off the PCB edge on heatsink co-planar with PCB.

Regulated supply connection points.

No wet electrolytic capacitors used.

Purpose

Full featured device for development use.

Interactive Logic Functionality Supported

All.

Communications

Standard 10/100MHz Ethernet LAN using TCP/IP allows remote deployment of Logic Module to wherever a LAN connection can be found.

Communications Parameters

Set via software with the assistance of a single two-pin header and shorting link. No switches or similar items used.

Cabling

All communications cabling is standard off-the-shelf.

Network Indicator LEDs

LEDs allow you to see when a link has been established, what speed it is running at and whether it is active.

Power Source

Supplied from Logic Module. No separate supply required.

Purpose

Lower cost device for permanent field installation

Interactive Logic Functionality Supported

File Menu - all.

Edit Menu - all.

View Menu except Data Display and Signal Display.

Tools Menu - all.

Project Menu except -

Single and Continuous Step

Disable Outputs and Disable Outputs in Pause.

Disable Outputs and Disable Outputs in Pause.

Record Test Run.

Test Runs Manager.

Configure Signal Monitoring.

Schematic Menu - all.

Configuration Menu - all.

Breakpoints are not available.

The Event Log will be viewable but remain empty.

Other Features

As per Development Communications Card.