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AR# 29421

LogiCORE FIR Compiler v1.0 - Why do I see a glitch when switching between coefficent sets with halfband filters?

Description

Why do I see a glitch when switching between coefficient sets with halfband filters? 

 

There is a glitch in the switchover from one coefficient set to another when using multiple coefficient sets with halfband filters. The glitch is due to the new center tap coefficient being applied earlier than the rest of the new coefficients.

Solution

It is possible to avoid the glitch by halting data processing during the switchover period, as the glitch will only be evident if data is passed continuously to the core during the switchover. 

 

This issue has been resolve in the FIR Compiler v2.0. 

 

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

AR# 29421
Date Created 10/28/2007
Last Updated 05/22/2014
Status Archive
Type General Article