Project maintainers


Name: spacewire_light
Created: Jun 6, 2010
Updated: Dec 5, 2018
SVN Updated: May 4, 2013
SVN: Browse
Latest version: download (might take a bit to start...)
Statistics: View
Bugs: 10 reported / 5 solved
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Other project properties

Category:Communication controller
Development status:Beta
Additional info:Design done
WishBone compliant: No
WishBone version: n/a
License: GPL


SpaceWire Light is a SpaceWire encoder-decoder with FIFO interface.
It is synthesizable for FPGA targets (up to 200 Mbit on Spartan-3).
An optional AMBA bus interface can be used to implement the core in
LEON3-based designs.


The goal is to provide a complete, reliable, fast implementation of a SpaceWire encoder-decoder according to ECSS-E-50-12C. The core is "light" in the sense that it does not provide additional features such as RMAP, routing etc.

SpaceWire Light supports two application interfaces. One interface provides FIFO-style access to RX/TX buffers in the core (spwstream). This interface can be easily integrated into most digital designs.

Alternatively, an AMBA bus interface (spwamba) may be used to integrate SpaceWire Light into a LEON3 embedded system. This interface supports DMA-based data transfers. The code for the AMBA interface depends on GRLIB, a VHDL library from Aeroflex Gaisler. The source of GRLIB must be downloaded separately from

See the manual for detailed information: Manual.pdf.


This core is complete and fully functional. It has been tested on Xilinx Spartan-3 and Virtex-5 FPGA boards, with a SpaceWire link connected to a commercial SpaceWire product.


SpaceWire Light is used for VIBANASS, an image-based navigation sensor system developed by Kayser-Threde, co-funded by the German Aerospace Center.