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# 9704

3.1i Virtex Speed Files - New Virtex Speed Files are available


Keywords: speed, speeds, Virtex, Virtex-E, Spartan-2

Urgency: Standard

General Description:
New Virtex and Spartan-2 speed files are available in the 3.1i service pack
addressing the following issues:

There is an underreporting for multiple IOBs connected to the global clk.

Virtex shift register CLK->Q delays are underreported by 0.822 nS on -6 grade.

Delays on nets using large chains of unbuffered singles are underreported.


This change is available in the latest 3.1i Service Pack available at:
AR# 9704
Date Created 07/17/2000
Last Updated 12/07/2004
Status Archive
Type General Article