Intel® MAX® 10 FPGA Configuration User Guide

ID 683865
Date 3/27/2023
Document Table of Contents JTAG Secure Mode

In JTAG Secure mode, the device only allows mandatory IEEE 1149.1 JTAG instructions to be exercised.

You can enable the JTAG secure when generating the .pof in the Convert Programming Files. To exit JTAG secure mode, issue the UNLOCK JTAG instruction. The LOCK JTAG instruction puts the device in the JTAG secure mode again. The LOCK and UNLOCK JTAG instructions can only be issued through the JTAG core access. Refer to JTAG Instruction Availability for list of available instructions.