Intel® MAX® 10 JTAG Boundary-Scan Testing User Guide

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ID 683210
Date 11/01/2021
Public
Document Table of Contents
Document Table of Contents x
1. Intel® MAX® 10 JTAG BST Overview 2. JTAG BST Architecture 3. BST Operation Control 4. I/O Voltage Support in the JTAG Chain 5. Enabling and Disabling JTAG BST Circuitry 6. Guidelines for JTAG BST 7. Boundary-Scan Description Language Support A. Document Revision History for the Intel® MAX® 10 JTAG Boundary-Scan Testing User Guide
2. JTAG BST Architecture x
2.1. JTAG Pins 2.2. JTAG Circuitry Functional Model 2.3. JTAG Boundary-Scan Register
2.3. JTAG Boundary-Scan Register x
2.3.1. Boundary-Scan Cells in Intel® MAX® 10 I/O Pin
3. BST Operation Control x
3.1. JTAG IDCODE 3.2. JTAG Secure Mode 3.3. JTAG Private Instruction 3.4. JTAG Instructions
1. Intel® MAX® 10 JTAG BST Overview
2. JTAG BST Architecture
3. BST Operation Control
4. I/O Voltage Support in the JTAG Chain
5. Enabling and Disabling JTAG BST Circuitry
6. Guidelines for JTAG BST
7. Boundary-Scan Description Language Support
A. Document Revision History for the Intel® MAX® 10 JTAG Boundary-Scan Testing User Guide

6. Guidelines for JTAG BST

Consider the following guidelines when you perform BST with the device:

  • If the “10...” pattern does not shift out of the instruction register through the TDO pin during the first clock cycle of the SHIFT_IR state, the TAP controller did not reach the proper state. To solve this problem, try one of the following procedures:
    • Verify that the TAP controller has reached the SHIFT_IR state correctly. To advance the TAP controller to the SHIFT_IR state, return TAP controller to the RESET state and send the 01100 code to the TMS pin.
    • Check the connections to the VCC, GND, JTAG, and dedicated configuration pins on the device.
  • Perform a SAMPLE/PRELOAD test cycle before the first EXTEST test cycle to ensure that known data is present at the device pins when you enter EXTEST mode. If the OEJ update register contains 0, the data in the OUTJ update register is driven out. The state must be known and correct to avoid contention with other devices in the system.
  • To perform testing before configuration, hold the nCONFIG pin low.
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