Forum Discussion

enovara's avatar
enovara
Icon for New Contributor rankNew Contributor
9 months ago

Can't place multiple pins assigned JTAG shared pins

Hello, I followed all the rules in: https://www.altera.com/en_us/pdfs/literature/hb/max-10/ug_m10_config.pdf https://www.intel.com/content/www/us/en/docs/programmable/683865/current/guidelines-...
Hdl
enovara's avatar
enovara
Icon for New Contributor rankNew Contributor
9 months ago

Hi,

thanks for the feedback.

1) This is how i try to configure my system:

What I am seeing is that your design is using one of the JTAG pins as a general purpose I/O pin.
Our requirement is different: we need to use the JTAG pins as a JTAG interface while the JTAG_EN is logic high, and then, after the initial configuration, those same pins would be used as I/O pins (while JTAG_EN is logic low).

Is this doable on the MAX10 board?

What you are doing seems to be different: you are re-assigning one of the jtag pins to a custom function.

2) I am not able to open the " dual-purpose pins " tab; this is what Quartus is showing me: