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CPete12
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7 years ago

JTAG Secure Mode

Dear all, As I understand I can lock the JTAG port during programming, which is highly applreciated. However, in the Manual, it says that it is also possible to later unlock the port again, which i...
CPete12's avatar
CPete12
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7 years ago

Dear YL,

Thankyou for your reply! I forgot to mention that I am looking at a MAX10, which runs on TSMC's 55nm process, so the above feature does not apply (I am sorry for wasting your time and not mentioning it before). I know I can lock the JTAG duing programming, but there seems to be a way to unlock it by instatinating the internal JTAG and pulling the start_unlock port (see 

<a href="https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/max-10/ug_m10_config.pdf">MAX 10 Configuration File</a>

section 3.9.4). How can I turn this feature off? Or is it tunred off by default? Is there any literature that you could suggest?

Many thanks again,

Chistian