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LogiCORE RAM-Base Shift Register - Why is the LogiCORE RAM-Based Shift Register v9.0 almost 10 times larger than the LogiCORE RAM-Based Shift Register v8.0, when targeting Virtex or Spartan-II?

AR# 23696

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Topic IP-DSP Horizontal
Last Updated 09/16/2008
Status Active
Description

Keywords: CORE Generator, core, LogiCORE, SRL16, SRL16E, shift register

Why is the LogiCORE RAM-Based Shift Register v9.0 almost 10 times larger than the LogiCORE RAM-Based Shift Register v8.0, when targeting Virtex or Spartan-II?

Solution

This is due to a bug in the implementation tools used to generate the RAM-Based Shift Register v9.0.

To work around this problem, use LogiCORE RAM-Based Shift Register v8.0.
 
 
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