如何使用Impact和平台线USB II将aes加密密钥放入Spartan 6 EFUSE寄存器

嗨Krishna和Kodali，非常感谢您的回复。
我重新访问了设计并重新检查了一切。
事实证明，RUSE引脚上安装了错误的R电阻值;
1k4而不是1k14。
这远远高于直流和开关特性用户指南中规定的+/-百分比容差。我订购了正确的电阻值，将其安装到“未吹制”电路板之一，今天再次尝试。
一切顺利。我打算将此回复标记为解决方案。
如果其他人将来有一个部分配置的加密eFuse密钥，那么这篇文章很可能会帮助他们。非常感谢你提出的那些建议;
我很高兴这一切都归结为一个简单的电阻值，可以很容易地纠正！干杯，皮特。
在原帖中查看解决方案



以下为原文

Hi Krishna and Kodali,

Many thanks for your replies.  I re-visited the design and re-checked everything.  It turned out that the wrong value of R resistor was populated on the RFUSE pin; 1k4 instead of 1k14.  This is much higher than the +/- one percent tolerance stated in the DC and Switching characteristics user guide.

I ordered the correct value of resistor, fitted it to one of the "unblown" boards and tried again today.  Everything working successfully.

I'm going to mark this reply as the solution.  If somebody else were to ever have a partially configured encryption eFuse key in the future, then this post may well help them out.

Many thanks once again for the kind suggestions you put forwards; I'm glad that this was all down to a simple resistor value that can be easily rectified!

Cheers,
Pete.
View solution in original post

很抱歉再次发布这篇文章，但这个问题真的让我们失望了。
在我们对某些可能出错的问题有所了解之前，我不愿意再烧掉任何设备。
有谁之前经历过这个吗？
有人可以提出建议吗？
非常感谢！



以下为原文

Sorry to bump this post up again, but this problem is really holding us up.  I'm reluctant to blow any more devices until we have some sort of idea what could have gone wrong.  Has anyone experienced this before?  Could anyone offer a suggestion?
 
Many thanks!

- 我们在其他项目中使用了带有EFUSE加密的Spartan 6而没有任何问题
以上表示当前项目存在的一些问题。
你能分享完整的项目吗？
仅供参考：以下是有关Spartan-6 EFUSE加密问题的一些相关答案。
请检查其中任何一个有助于您的情况
http://www.xilinx.com/support/answers/62646.html-->eFUSE编程 -  iMPACT 14.7支持哪些设备以及哪些设备不受支持
http://www.xilinx.com/support/answers/46336.html--> iMPACT  - 为什么Spartan-6 FPGA eFuse操作限制在1.5 MHz？
_______________________________________________如果有助于解决您的查询，请将此帖子标记为“接受为解决方案”。
因此，它将有助于其他论坛用户直接参考答案。如果您认为该信息有用且面向答复，请给予此帖子称赞。



以下为原文

--We have used the Spartan 6 with EFUSE encryption in other projects without a problem
 
The above indicates some problem in current project. Could you please share the complete project?
 
FYI: The below are some related Answers about issues in Spartan-6 EFUSE encryption. Please check any of them helps your case
http://www.xilinx.com/support/answers/62646.html -->eFUSE programming - What devices are supported and what devices are not supported in iMPACT 14.7
 
http://www.xilinx.com/support/answers/46336.html --> iMPACT - Why are Spartan-6 FPGA eFuse operations limited to 1.5 MHz?
 
________________________________________________

Please mark this post as an "Accept as solution" in case if it helped to resolve your query. So that it will help to other forum users to directly refer to the answer.

Give kudos to this post in case if you think the information is useful and reply oriented.

很高兴知道你的问题已经解决了。
感谢您分享调试信息。
_______________________________________________如果有助于解决您的查询，请将此帖子标记为“接受为解决方案”。
因此，它将有助于其他论坛用户直接参考答案。如果您认为该信息有用且面向回复，请给予此帖子一定的荣誉。



以下为原文

It is glad to know that your problem solved. Thanks for sharing the debug information.
________________________________________________

Please mark this post as an "Accept as solution" in case if it helped to resolve your query. So that it will help to other forum users to directly refer to the answer.

Give kudos to this post in case if you think the information is useful and reply oriented.