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_elham
Observer
Observer
222 Views
Registered: ‎12-24-2019

ReadEfuse failure

Hi all,

I'm programming spartan6 device's efuse register. when I give efuse "ReadEfuse -aeskey -p 1" command to read back efuse, I get all-zero for AES key register. I got this all-zero in both programmed and non-programmed efuses in different devices.

I cannot write efuse with a non all-zero key!

I appreciate any help,

Elham

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iguo
Xilinx Employee
Xilinx Employee
169 Views
Registered: ‎08-10-2008

https://www.xilinx.com/support/answers/47802.html

Try readdna, do you get correct dna values?

How did you program efuse? Did you program the Key security bit?

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