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AR# 9704

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

Description

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.

Solution

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