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Occasional Contributor

3 years ago

Solved

SignalTap Invalid jtag (completely wiring dependent)

Dear support, This issue has haunted me since 16.1 till 22.1std. SinglTap is not reliable. And it is completely wiring dependent. I don't see hardware or setup issue, since reducing wiring will get...

Platform

sstrell
3 years ago
Ouch.
Have you tried slowing the JTAG clock or making sure you have the JTAG timing constraints in your .sdc:
https://www.intel.com/content/www/us/en/docs/programmable/683081/22-2/jtag-signals.html
https://www.intel.com/content/www/us/en/support/programmable/articles/000084236.html

ShengN_altera

Super Contributor

3 years ago

Below are some links for suggestions:

https://www.intel.com/content/www/us/en/programmable/quartushelp/current/index.htm#msgs/msgs/esedq_jtag_err_no_hardware.htm

https://www.intel.com/content/www/us/en/programmable/quartushelp/current/index.htm#msgs/msgs/ibnlq_invalid_jtag_configuration.htm

https://www.intel.com/content/www/us/en/programmable/quartushelp/current/index.htm#msgs/msgs/iredq_invalid_jtag_configuration.htm

https://www.intel.com/content/www/us/en/programmable/quartushelp/current/index.htm#msgs/msgs/isedq_invalid_jtag_configuration.htm

Also make sure to recompile and reprogram after making any changes.

Try to Scan Chain as well.

Thanks,

Best regards,

Sheng

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SignalTap Invalid jtag (completely wiring dependent)

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