是否有认证或权威机构来决定软核是否具有容错能力?
另一个问题。 我发现 LEON3-FT 仅在 RTAX Actel FPGA 上实现时才具有抗辐射能力。 是对的吗?
打扰一下,但我对此感到困惑,因为有人谈论用于太空应用的 LEON3-FT(容错),在哪里说耐辐射更正确?
而且,最后一个问题......是否有人知道另一个软核“耐辐射”(用于太空应用)?
Is there a certification or some authority that decides if a soft core is fault tolerant or not?
Another question. I've seen that LEON3-FT is radiation tolerant only when implemented on the RTAX Actel FPGA. Is that right?
Excuse me but I'm confused about it because somebody speaks about LEON3-FT (fault tolerant) for space applications, where it is more correct to say radiation tolerant?
And, the last question...is there somebody that knows another soft core "radiation tolerant" (for space application)?
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Actel 不具有容错能力。 首先它是抗辐射的。 这是因为它的设计方式。
Xilinx 有一些有关辐射的文档链接文本。
我做过卫星FPGA工作,不知道有什么认证机构。 一般问题的一些讨论位于 链接文本。
容错设计将是一个开始。 然而,由于基于 SRAM 的设计(Xilinx、Altera、Lattice)中的配置内存可能会被损坏,因此您也必须担心这一点。
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.
这可能有用 。 还有一个演示文稿,总结了结果。 这些是为 CERN 所做的测试。 他们需要耐辐射 ASIC 并测试了一些 FPGA。 我认为他们并不专注于认证,他们只是测试重新配置有故障的 FPGA 的速度。
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.
当你说容错时,意味着如果由于辐射离子撞击而发生故障,处理器将有能力纠正它。 这是由于处理器架构的设计方式造成的。
这种容错 IP 可以与基于航天级 SRAM 的设备和设备一起使用。 性能仍将令人满意,但我认为由于 SRAM FPGA 功能必须进行故障纠正,它会减慢处理器的速度。 而如果将上述 IP 与抗辐射 FPGA 结合使用,软错误将会少得多。
辐射硬化和辐射硬化之间的区别 容忍:硬化在一定的拉德水平下没有错误,而容忍对于某些辐射量会导致一定量的错误
Actel 可以提供 upton 请求的数据,但如果您在美国,则可以提供。 ITAR 限制适用于所有航天级设备和设备
在您期待有关耐辐射/强化设备的答复之前,供应商可能会要求您披露有关您自己的信息。
CERN 使用 Actel 器件(FUSION 系列)来纠正 Xilinx 器件的配置。
When you say fault tolerant, it means in case a fault occurs due to radiation ion hit, the processor will have the ability to correct it's bit . This is due to the way the processors architecture is designed.
Such kind of fault tolerant IPs can be used with Space grade SRAM based devices & will yet perform somewhat satisfactorily, but i think it will slow down the processor due to fault correction it will have to do due to SRAM FPGA features. Whereas the soft errors will be much much lesser if you use the above IP with a Radiation Hardened FPGA.
The difference between Radiation Hardened & Tolerant : Hardened is no error upto certian rad level, whereas Tolerant will cause certain amount error for certain amt of radiation
Actel can provide data upton request, but provided if you are in USA. ITAR Restrictions apply for all Space Grade devices &
Vendors may ask you to disclose info about yourself before you expect a reply about Radiation tolerant / hardened device.
CERN has used Actel devices (FUSION Family) to correct a Xilinx devices's configuration.