AR# 1871

14.x Speed Files - Reports contain "Preliminary" or "Advanced" timing values

Description

The TRCE (Trace) reports contain "Preliminary" or "Advanced" timing values. What do these values mean?

Solution

In a Trace report, the "Speed" line can include the words "Preliminary" or "Advanced". These designations refer to the speed file used in the analysis, and they indicate that the speed values are based on preliminary characterization. This also indicates that the speed files might change in future software releases.

Advanced measurements are simulated (SPICE) before any silicon is returned.

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AR# 1871
Date	12/15/2012
Status	Active
Type	General Article
Devices	4000/E/XL/XV 4000E/EX/XL QPro/R 9500 More 9500XL 9500XL IQ 9500XL XA 9500XV CoolRunner XPLA3 CoolRunner-II CoolRunner-II XA Spartan/XL Spartan-3 Spartan-3 XA Spartan-3A Spartan-3A DSP Spartan-3AN Spartan-3E Spartan-6 LX Spartan-6 LXT Spartan-II Spartan-IIE Spartan-IIE XA Spartan-XL IQ Virtex Virtex QPro/R Virtex-4 FX Virtex-4 LX Virtex-4 QPro/R Virtex-4 SX Virtex-5 FXT Virtex-5 LX Virtex-5 LXT Virtex-5 SXT Virtex-5 TXT Virtex-5Q Virtex-6 CXT Virtex-6 HXT Virtex-6 LX Virtex-6 LXT Virtex-6 SXT Virtex-E Virtex-E QPro Virtex-EM Virtex-II Virtex-II Pro Virtex-II Pro X Virtex-II QPro/R Artix-7 Kintex-7 Virtex-7 Virtex-7 HT Less
Tools	ISE Design Suite - 11.1 ISE Design Suite - 11.2 ISE Design Suite - 11.3 More ISE Design Suite - 11.4 ISE Design Suite - 11.5 ISE Design Suite - 12.1 ISE Design Suite - 12.2 ISE Design Suite - 12.3 ISE Design Suite - 12.4 ISE Design Suite - 13 ISE Design Suite - 13.1 ISE Design Suite - 13.2 ISE Design Suite - 13.3 ISE Design Suite - 13.4 ISE Design Suite - 14.1 Less

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AR# 1871

14.x Speed Files - Reports contain "Preliminary" or "Advanced" timing values

Description

Solution