Connexium is an engineering company located in France that specializes in FPGA and digital signal processing design for applications such as industrial systems, test instruments, and embedded systems. They offer expertise in areas like RF/IF design, DSP, and communications protocols. Connexium helps clients with complex projects involving FPGAs, multicore processors, and system on a chip designs. They provide training, custom designs, and off-the-shelf test instruments and IP cores. Connexium has experience working on projects for aerospace companies and the European Space Agency.

2. Introduction
Embedded electronics and Communications engineering design company
FPGA design experts
www.connexium.fr
contact@connexium.fr
6, rue de l’Ourmède, 31621 Eurocentre
T. + 33 531 08 16 08

3. French company, located in the Aerospace Valley
(near Toulouse)
We are specialised in Digital communications for
• robust industrial systems
• high-end test instruments
• and embedded applications
We offer expertise, design services and manufacturing facilities

4. Expertise
Main
Signal Pre- Post- Signal
processing
RF/IF sampling processing processing generation IF/RF
Front-end Back-end
(DSP / PPC)
(ADC) (FFT, DDC) (Digital mixing) (DAC)
Algorithm
Host system
Control / Display / Data storage / Debug
CONNEXIUM helps you to reach “time-to-market” faster by lowering your design and integration risks
for complex projects integrating FPGA-based signal processing architectures, System On Chip,
Multiprocessors, Multicore processors and Microcontrollers
CONNEXIUM offers dedicated “on-site” and “on-demand” trainings for
• Xilinx FPGA-based topics
• and also for other technologies (ARM, ALTERA, ACTEL, LATTICE…)
CONNEXIUM has developed a pole of expertise in the design and integration
of Ethernet-based communicating solutions

5. Products
CONNEXIUM develops off-the-shelf test and measurement instruments :
• XWG multichannel high-speed arbitrary waveform generators (up to 2.5GSPS)
CONNEXIUM offers off-the-shelf embedded core solutions and FPGA IP cores including
• Alarm management systems with GPRS/ADSL link
• Ethernet bridge with secured UDP/IP communications
• Sensors interfaces to Ethernet networks
CnxStack (VHDL) allows users to efficiently integrate a simple and robust
communication link based on industry-standard protocols like UDP, IP, ICMP,
ARP… between FPGA devices, embedded systems, host controllers, servers
or any equipment communicating over Ethernet
Data Recovery (VHDL) up to 600MHz asynchronous communication link
with digital phase control to latch input data with any system clock

6. Customers
With many successes in International projects, CONNEXIUM’s expertise is recognised
by major contractors in the Aerospace industry

7. Participation in the ULISS project
by C.HAARDT, Thales Alenia Space project manager
“Led by the Research and Development of the R&D directorate at Thales Alenia Space France, the ULISS
(Ultra fast Internet Satellite Switching) project is funded by the European and French space agencies. The main
goal of this project is to prepare the future satellite payloads for Multimedia missions in Ka Band.
Fully involved in the ULISS project, CONNEXIUM has successfully provided more than 6 key designs of the
project, with a very high level of complexity :
- the switch controller (PCU) : based on high end SoC, including two VHDL cores both communicating with
an embedded processor (PPC), able to process near 500,000 users per second in a flexible way.
- High speed traffic emulator and monitoring function : based on high performance VHDL core, and
connected to several Multi Gigabit transceivers MGT,
- Flexible Data Generator and Data Recorder : to enable fast and efficient integration of the different parts
and check bit to bit compliance with the simulation.”
ULISS Project

8. Participation in the LEON SVF project
by S. REILLER, ASTRIUM Technical manager
and F. PASQUIER, ASTRIUM Study manager
“With the LEON2-FT processor being released for industrial applications, ESA/ESTEC has initiated and granted
to ASTRIUM Satellites a study for the development of a versatile Software Validation Facility (SVF) for this new
target processor. By versatile it is meant that this SVF can be configured either as a full software simulation tool
or with an hardware accelerator board running the LEON2-FT VHDL code. The LEON2-FT processor is
available in VHDL which enables to use commercial off-the-shelf FPGA boards, ease the design of the
interface between the CPU and the remaining part of the simulation, while ensuring fidelity.
CONNEXIUM’s expertise has been done in two steps. First of all, CONNEXIUM has reviewed the existing
VHDL source code and architecture and tools environment. Then, they have provided a set of
recommendations which have been successfully implemented in collaboration with Astrium Satellites team
leading to a LEON2-FT at 90MHz without any instability issue.
In addition CONNEXIUM has offered a re-design of the VHDL in order to reach the targeted frequency of
100MHz and to increase the maintainability of the VHDL thanks to a modular architecture. The challenge
was to implement exactly the same functionalities in order to avoid any changes in the simulation software.”
LeonSVF Project