The SpaceWire Codec has been developed by Adiuvo for use across a range of different FPGAs targetting space. 
 
It uses an oversampling approach for recovery of the clock from the incoming data and strobe. 
 
Delivery is source code, in accordance with the licnese available here.
 
All purchases come with a physical hardware deliverable of SPW CODEC working on the Adiuvo Embedded Sytem Development board. This enables rapid testing of the SpW Codec and its integration within a FPGA.