Intel® Arria® 10 Core Fabric and General Purpose I/Os Handbook

ID 683461
Date 1/21/2022
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7.5.2.1. JTAG Secure Mode

When the Intel® Arria® 10 device is in the JTAG Secure mode, all JTAG instructions except for the mandatory IEEE Standard JTAG 1149.1 BST JTAG instructions are disabled.

Table 106.  Mandatory and Non-Mandatory IEEE Standard 1149.1 BST JTAG Instructions
Mandatory IEEE Standard 1149.1 BST JTAG Instructions Non-Mandatory IEEE Standard 1149.1 BST JTAG Instructions
  • BYPASS
  • EXTEST
  • IDCODE
  • SAMPLE/PRELOAD
  • SHIFT_EDERROR_REG
  • CONFIG_IO
  • CLAMP
  • EXTEST_PULSE 41
  • EXTEST_TRAIN 41
  • HIGHZ
  • KEY_CLR_VREG
  • KEY_VERIFY 41
  • PULSE_NCONFIG
  • USERCODE
Note: After you issue the EXT_JTAG_SECURE instruction, the Intel® Arria® 10 device cannot be unlocked.
41 You can execute these JTAG instructions during JTAG Secure mode.