Forum Discussion
jtag secure mode (arria 10)
Is there an order in enabling security bits? Would enabling JTAG secure mode first lock me out from enabling any of the other security bits?
And is programming/verifying included in the list of jtag commands not permitted in secure mode?
3 Replies
- JohnT_Altera
Regular Contributor
Hi,
Is there an order in enabling security bits? Would enabling JTAG secure
mode first lock me out from enabling any of the other security bits?
- Yes, the order can matter, depending on your device.Generally:
- If you enable JTAG secure mode (or any security mode that restricts debug/programming access) before setting other security bits or configuring options, you may lock yourself out of making further changes via JTAG or other debug interfaces.
- Best Practice: Set all desired configuration and security bits before enabling JTAG secure mode or any permanent lock.
And is programming/verifying included in the list of jtag commands not
permitted in secure mode?
Yes.
Thanks.
- Yes, the order can matter, depending on your device.Generally:
- JohnT_Altera
Regular Contributor
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- CongoJack
New Contributor
Hi John, thank you for your answer. Is it possible to enable tamper protection after secure mode is enabled on the 20 nm arria 10?