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  4. AR# 58579: LogiCORE FIR Compiler v5.0 - Why do I see a glitch on the output after a coefficient reload, when using the DA FIR implementation?

AR# 58579

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LogiCORE FIR Compiler v5.0 - Why do I see a glitch on the output after a coefficient reload, when using the DA FIR implementation?

描述

Why do I see a glitch on the output after a coefficient reload, when using the DA FIR implementation?

解决方案

This is a known issue that can happen under particular timing scenarios.

The following options are available to work around this issue:
  •  Tolerate the glitch as the core will recover.
  •  Ensure that the FILTER_SEL value is different to the COEF_FILTER_SEL value during and immediately following a reload.
  •  Do not select ND
  •  If ND is used, ensure that the core is run at its maximum input rate during reload or de-assert ND during reload.

链接问答记录

主要问答记录

Answer Number 问答标题 问题版本 已解决问题的版本
29138 LogiCORE IP Finite Impulse Response Compiler (FIR Compiler) - Release Notes and Known Issues N/A N/A
AR# 58579
日期 03/02/2015
状态 Active
Type 综合文章
IP
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