Intel® MAX® 10 FPGA Design Guidelines

ID 683196
Date 10/19/2020
Public
Document Table of Contents

1.5.3.5. Review the following JTAG pin connections guidelines:

  • If you have multiple devices in the chain, connect the TDO pin of a device to the TDI pin of the next device in the chain.
  • Noise on the JTAG pins during configuration, user mode, or power-up can cause the device to go into an undefined state or mode.
  • To disable the JTAG state machine during power-up, pull the TCK pin low through a 1-kΩ resistor to ensure that an unexpected rising edge does not occur on TCK.
  • Pull TMS and TDI high through a 1-kΩ to 10-kΩ resistor.