JTAG pin sharing in MAX10

Hi,

Thank you for contacting Intel community.

Per Intel Max 10 pin connection guideline,

Intel suggest when to use JTAG pins as regular I/O pins, tie the JTAGEN pin to a weak 1-kΩ pull-down. To use JTAG pin as dedicated pin, tie the JTAGEN pin to a weak 10-kΩ pull-up.

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/dp/max-10/pcg-01018.pdf (page 6).

Regards,

Aiman

Hi,

JTAGEN is a dual-purpose pin. This pin functions according to the setting of the JTAG pin sharing option bit. If the JTAG pin sharing is not enabled, the JTAGEN pin is a regular I/O pin and JTAG pins function as JTAG dedicated pins.

If the JTAG pin sharing is enabled and the JTAGEN pin is pulled low, JTAG pins function as dual-purpose pins. If the JTAG pin sharing is enabled and the JTAGEN pin is pulled high, JTAG pins function as JTAG dedicated pins

Hence, if the pin is dedicated pin, it can't be used using user I/O mode.

Regards,

Aiman

Hi,

We do not receive any response from you to the previous question/reply/answer that I have provided. This thread will be transitioned to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you.

Regards,

Aiman