AR# 29571

LogiCORE FIR Compiler v3.0 - Why is my filter output incorrect when I have a factional rate change filter, that spans multiple DSP48 columns?

Description

Why is my filter output incorrect when I have a factional rate change filter that spans multiple DSP48 columns?

Solution

This issue is resolved in the FIR Compiler v.3.1. 

 

This issue is due to a bug in the factional rate change filter design that causes lost when passing the results between columns. 

 

See (Xilinx Answer 29138) for a detailed list of LogiCORE FIR Compiler Release Notes and Known Issues.

AR# 29571
Date 05/20/2014
Status Archive
Type General Article