Device Family: Intel® Stratix® 10

Intel Software: Quartus Prime Pro

Type: Answers

Area: Component


Last Modified: April 09, 2018
Version Found: v17.0
Bug ID: FB: 440830;

Warning(12620): Input port OE of I/O output buffer "~ALTERA_MSEL,~~obuf" is not connected, but the atom is driving a bi-directional pin

Description

You may see a warning message like the one above when compiling your Intel® Stratix® 10 design in the Intel Quartus® Prime Pro software version 17.0 and later. The warning message may refer to one of the MSEL (0..2) pins and an SDM_IO function that is being used on that pin (e.g.  CONF_DONE, INIT_DONE, HPS_COLD_RESET, HPS_WARM_RESET etc)

There is no requirement to make any internal connection to this pin and this warning message can be safely ignored.

Workaround/Fix

This warning message can be safely ignored. It will be removed in a future release of the Intel Quartus Prime Pro software.