Device Family: Intel® Arria® 10, Arria® II GX, Arria® II GZ, Arria® V, Intel® Cyclone® 10, Cyclone® IV, Cyclone® V, Intel® MAX® 10, Intel® Stratix® 10, Stratix® IV, Stratix® V

Type: Answers

Area: DSP


Last Modified: May 09, 2019
Version Found: v18.1
Bug ID: 1506795653
IP: FFT

Why is the last output frame of the Intel® FFT IP core missing EOP?

Description

Due to a problem with the Intel® FFT IP core in Intel® Quartus® Prime Standard software version 18.1, you may observe that the last output frame of the FFT IP core is missing EOP when both the Input Order and Output Order are configured to Natural and there are intervals with sink_valid = 0 between input frames.

Workaround/Fix

Configure the Output Order in FFT IP to be Digit Reverse.

This problem will be fixed in a future version of the Intel Quartus Prime Standard software.