Type: Answers, Errata

Area: EMIF, Intellectual Property



Global Signal Assignments for UniPHY External Memory Interfaces Not Applied

Description

The Fitter sometimes does not honor GLOBAL signal assignments applied by the <variation name>_pin_assignments.tcl script.

Workaround/Fix

To determine whether the Quartus II software properly applies GLOBAL assignments, check the Fitter Report and verify whether any GLOBAL signal assignment referring to a PLL output port (for example, ...|auto_generated|clk[*]) appear in the Ignored Assignments section.If there is a GLOBAL assignment to a PLL output port listed in Ignored Assignments, you can correct the problem by running Analysis and Synthesis and then running the Fitter. You should then verify in the Fitter Report that the assignment is no longer ignored.