Spartan-6LX FPGA module with USB 3.0


Please note the pinkompatible successor product EFM-03

The EFM-02 embedded FPGA module is based on the Xilinx Spartan-6LX® FPGA. This FPGA family delivers an optimal balance of low risk and low power for cost-sensitive applications. With integrated power supplies, platform flash and reference designs, the EFM-02 provides everything to build custom cameras, image processing systems or any other high-performance FPGA-based systems.

target applications

  • high performance PC peripherals
  • CMOS sensor interfacing
  • custom cameras
  • image processing
  • DSP co-processing
  • embedded control
  • custom test equipment


  • Xilinx Spartan-6LX® FPGA
    versions available:
  • USB3.0 SuperSpeed
  • 2Gbit DDR2
  • 64Mbit dual SPI flash
  • up to 191 io signals
  • Reference design and extensive software support

properties & qualities

USB 3.0 SuperSpeed performance

Real-world measured data rate of more than 300 MB/s can be achieved with the UDK3 API and SuperSpeed USB 3.0 connections.

large on-board SDRAM

The on-board DDR2 SDRAM provides 2 Gbit (eq. 256 MByte) memory capacity - ideal for applications like image processing or data acquisition.

plenty of user io

With up to 191 user-IO, which can also be used as differential pairs, the EFM02 offers ample connectivity options.

multiple configuration options

You can configure the FPGA using the Xilinx Platform Cable (JTAG), using your own UDK-based software, using the UDK3 board manager or from the on-board flash memory. All this options are always available - there is no need to choose by setting switches or jumpers.

easy to use USB 3.0 connectivity

A suitable Wishbone bus-connector IP is included in the EFM-03 example design of the UDK3. Just use it in your design and access your local Wishbone bus from a PC over USB 3.0. The Cesys UDK API calls provide read and write functions to addressable blocks of data remotely on your local Wishbone bus. It works as easy as memcopy does locally on your PC. 

Unified Development Kit UDK and API

The Cesys UDK is an API for FPGA configuration and interfacing the FPGA to the software running on your PC. The UDK handles everything between a API call from your software and a Wishbone bus transaction inside the FPGA. Read and write calls are serialized through the USB 3.0 bus, making the FPGA bus address space directly accessible by your software. Using the UDK results in an enormous saving in time and development resources. The UDK comes with no additional cost in binary form with the EFM-02 module. To use it with 3rd party hardware, we offer a pay-once source-code licensing model for the UDK source-code.

management tools included

Included in the UDK, there are tools to perform FPGA configuration, clear, write and read the on-board configuration flash, read and write the user-ID of the board and control the reset-pin.

reference design

Use our extensively tested reference designs as a starting point for your projects. We use our own reference designs for many customer projects and can therefore offer you the very best support.

design-in support

We have great interest in ensuring that your project is successful. That is why we will give great effort to assist you. We will answer questions that you ask in our support-forum as soon as possible because sometimes, it's the little things that stop you. In addition to our free forum-support, we offer fee-based support and development service customized to your needs.

prototyping and OEM integration

The EFM-02 was built for prototyping systems and integration into OEM devices. Everywhere, a flexible FPGA solution with USB 3.0 interface is required, the EFM-02 is a perfect match.

block schematics

Spartan-6LX attributes

1 Each DSP48A1 slice contains an 18 x 18 multiplier, an adder, and an accumulator

2 Each CMT contains two DCMs and one PLL

development tools

To develop your own FPGA solutions, Xilinx offers the ISE design suite.
The XC6SLX45 FPGA is supported by the free version, called WebPack Edition.
The XC6SLX100 and XC6SLX150 FPGAs are supported by all other ISE Design Suite editions.

documentation and downloads

EFM02 expansion connector signal assignment

EFM02 Footprint in Format dxf

EFM02 Footprint PDF

UCF file for EFM02 with XC6SLX45

UCF file for EFM02 with XC6SLX150

PCN 2015 

USB 3.0 connector type change, FX-3 EEprom Size change Layout improvements.

EFM02_soc reference design

uses the CESYS UDK3 that comes with the EFM02 module. It is ideally suited as a starting point for user designs. (v1.1)

EFM02 hardware reference

This also includes breakout board reference.

Get answers, download* drivers, tools and reference designs from the Cesys support forum.

* To enter the protected download area of the forum, you have to register in the forum and ask the forum admin to flag you as a customer.

ordering information





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Please place your order in our online-shop or send us your P.O. by fax or email.

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For further Infomation please contact

technical information

Andreas Doll
technical lead


availability & prices

Julia Gelsebach
commercial lead