UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 18677

6.1i SP3 Speed Files/Timing - New Virtex-II Pro speed files, 1.85 for 6.1i SP3 only

Description

Keywords: speeds, file, rocket, mgt, hold, setup, violation, error

Urgency: Standard

General Description:
Where are the new speed files and what has changed in the files?

Solution

The changes are as follows:

Source Synchronous and System Synchronous Hold Times are Smaller

This change reduces the setup/hold window and allows support for higher-speed designs. The Tiopid parameter has been increased for certain device/speed grade combinations to better match measurement results from characterization. This parameter might affect setup and hold values for designs that use the delay line in the IOB.

Rocket I/O TXDATA Setup and Hold Times

This change fixes a bug introduced in 6.1isp3 in which the TXDATA setup and hold requirements were reversed, resulting in the reporting of non-existent hold violations in some designs.

You can download the speed files from the following location and extract them into the directory pointed to by the XILINX environment variable:
http://www.xilinx.com/txpatches/pub/swhelp/speed_files/v2p_spd_185.zip

The first version of the software containing these fixes is ISE 6.2i.

AR# 18677
Date Created 12/18/2003
Last Updated 03/27/2007
Status Archive
Type General Article