Fault (radiation) tolerant soft core?

Question

Hi everybody, I've a question...

is there a certification or something that decides if a soft core is fault tolerant or not?

and another question...I've seen that LEON3-FT is radiation tolerant only implementd on RTAX Actel FPGA. Is it right?

Excuse me but I'm confusing about it becuase somebody speaks about LEON3-FT (fault tolerant) for space application where is better to say radiation toleran...mny doubts!!!!!

And, the last question...is there somebody that knows another soft core "radiation tolerant" (for space application)?

Many thanks in advance!!!!

Marco

Answer 1

The Actel is not fault tolerant. It is resistant to radiation in the first place. This is because of the way it is design.

Xilinx has some documentation on radiation link text.

I have done satellite FPGA work and don't know of any certification body. Some discussion of the general issue is at link text.

A fault tolerant design will be a start. However since the configuration memory can be corrupted in a SRAM-based design (Xilinx, Altera, Lattice), you have to worry about that too.

Answer 2

This might be useful. There is also a presentation, summarizing the results. These are test done for CERN. They need radiation tolerant ASICs and tested some FPGAs. I think they didn't focus on certification, they just testet how fast they could re-configure a faulty FPGA.