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Quartus II Settings File Reference Manual - Altera

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ANALYZE_LATCHES_AS_SYNCHRONOUS_ELEMENTS<br />

Type<br />

© 2012 <strong>Altera</strong> Corporation. All rights reserved. ALTERA, ARRIA, CYCLONE, HARDCOPY, MAX, MEGACORE, NIOS, QUARTUS and STRATIX words and logos<br />

are trademarks of <strong>Altera</strong> Corporation and registered in the U.S. Patent and Trademark Office and in other countries. All other words and logos identified as<br />

trademarks or service marks are the property of their respective holders as described at www.altera.com/common/legal.html. <strong>Altera</strong> warrants performance of its<br />

semiconductor products to current specifications in accordance with <strong>Altera</strong>'s standard warranty, but reserves the right to make changes to any products and<br />

services at any time without notice. <strong>Altera</strong> assumes no responsibility or liability arising out of the application or use of any information, product, or service<br />

described herein except as expressly agreed to in writing by <strong>Altera</strong>. <strong>Altera</strong> customers are advised to obtain the latest version of device specifications before relying<br />

on any published information and before placing orders for products or services.<br />

<strong>Quartus</strong> <strong>Settings</strong> <strong>File</strong><br />

<strong>Reference</strong> <strong>Manual</strong><br />

June 2012<br />

17. TimeQuest Timing Assignments<br />

Directs the <strong>Quartus</strong> <strong>II</strong> TimeQuest timing analyzer to analyze latches as synchronous<br />

elements, rather than as combinational elements. Although latches continue to be<br />

implemented as a LUT feeding back onto itself, turning on this option directs the<br />

TimeQuest analyzer to analyze all latches as synchronous elements. Specifically, the<br />

clock enable is analyzed as an inverted clock. The TimeQuest analyzer reports the<br />

results of setup and hold analysis on these latches.<br />

Boolean<br />

Device Support<br />

This setting can be used in projects targeting any <strong>Altera</strong> device family.<br />

Syntax<br />

set_global_assignment -name ANALYZE_LATCHES_AS_SYNCHRONOUS_ELEMENTS<br />

<br />

Default Value<br />

On<br />

ISO<br />

9001:2008<br />

Registered<br />

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