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AR# 12505

1999.1b EXEMPLAR - Leonardo Spectrum is not inferring Xilinx Virtex flip-flops with enables

Description

Keywords: flip, flop, enable, Virtex, logic

Urgency: Standard

General Description:
Version 1999.1b of Leonardo Spectrum does not infer Xilinx Virtex flip-flops with the enable pin. Instead, LUTs are used to implement the enable. This causes an increase in LUT count, and, therefore, area.

Solution

This has been fixed with the release of 2001.1a. If you do not have the latest version of Leonardo Spectrum, please download it from the Exemplar web site at:

http://www.exemplar.com
AR# 12505
Date Created 09/07/2001
Last Updated 09/17/2002
Status Archive
Type General Article