Device Family: Intel® Stratix® 10

Intel Software: Quartus Prime Pro

Type: Answers

Area: Component, HSIO

Last Modified: March 16, 2018
Version Found: v17.1
Bug ID: FB: 485289;

Is there a known issue with Intel® Stratix® 10 3V IOs in user mode?


Yes, due to a known problem in Intel® Quartus® Prime Pro software version 17.1 update 2 or earlier, when 3V IOs in Intel Stratix® 10 FPGAs are assigned to a static GND in the design, you may see an inversion at the output pin. 

3V IOs are located in IO banks 6A,6B,6C,7A,7B,7C and are available in different density and package variants of Intel Stratix 10 devices.


To work around this, use an input to drive the 3V IO or place the signal assignment in a clocked process. 

This is scheduled to be fixed in a future release of the Intel Quartus Prime Pro software.