Device Family: Intel® Stratix® 10

Intel Software: Quartus Prime Pro

Type: Answers

Area: EMIF


Last Modified: January 31, 2018
Version Found: v17.1 Update 1
Bug ID: FB: 517840;
IP: Stratix 10 External Memory Interfaces

Why does the Intel® Stratix® 10 External Memory Interfaces DDR4 IP show minimum pulse violations on the wf_clk clocks in the Intel Quartus® Prime timing analyzer?

Description

Due to a problem in the Intel® Quartus® Prime Pro software version 17.1.1, you may see Minimum Pulse Width timing violations associated with the wf_clk_<number> clocks in the Intel Quartus Compilation TimeQuest report of a project implementing the Intel Stratix® 10 External Memory Interfaces DDR4 IP.

An example of a Minimum Pulse Width timing violation from the Intel Stratix 10 DDR4 example design project is emif_s10_0|emif_s10_0_wf_clk_3 with a slack failure of -0.058.

Workaround/Fix

The wf_clk clock minimum pulse width violations can be ignored.
This problem is scheduled to be fixed in a future release of the Intel Quartus Prime Pro software.