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# 19074

6.2i NGDBuild - (Spartan-3) "WARNING:NgdBuild:488 on LVPECL_25 is invalid"

描述

Keywords: standard, valid, OBUFDS

Urgency: Standard

General Description:
On my Spartan-3 design I used an OBUFDS primitive, and set the standard to LVPECL_25. This is supposed to be a valid standard for Spartan-3, but when I run NGDBuild, I receive the following:

WARNING:NgdBuild:488 - Attribute value "LVPECL_25" is not an accepted value for attribute "IOSTANDARD" on "output_lvds_n".
WARNING:NgdBuild:488 - Attribute value "LVPECL_25" is not an accepted value for attribute "IOSTANDARD" on "output_lvds_p".

Is this warning a mistake?

解决方案

Yes, the tools should not issue this warning. The LVPELC_25 was missing from the list of NGDBuild valid standards.

This will be fixed in a future release of the software.
AR# 19074
日期 02/21/2007
状态 Archive
Type 综合文章
的页面