Forum Discussion
CPete12
New Contributor
New ContributorJTAG 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...
YuanLi_S_Intel
Regular Contributor
Regular ContributorHi Christian,
The JTAG Secure Mode is unlock by default. Once you LOCK the JTAG Secure Mode, the device is in JTAG Secure mode after power-up and
configuration.
If you are speaking about the feature to turn on (LOCK) and off (UNLOCK) the JTAG Secure Mode, what you need to do is burn the fuse of tamper-protection bit. This will permanently cause the FPGA in JTAG Secure Mode. If it is permanently in JTAG Secure Mode, that means, you cannot unlock the JTAG Secure Mode.
Regards,
Yuan Li
