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# 20377

6.3.2 NGDBuild - 'NgdBuild:466 - input pad net 'bHD_DAT' has illegal connection"

描述

Keywords: error, NGDBuild, ngdbuild, 466, illegal, connection

Urgency: Low

General Description :
When IFDDRR and FDCE are instaniated on the same net, NGDBuild fails with the following error.

"ERROR:NgdBuild:466 - input pad net 'XXX' has illegal connection. Possible
pins causing this are:pin D on block XXX with type FDCE"

解决方案

The IFDDRR components consist of one input buffer and two identical flip-flops (FDCPE). When FD flip-flop is also instaniated, the handling of IBUF for this flip-flop causes the tools to error out. A change request is filed against this.

To work around this issue, you can use two FD components to create the DDR flip-flop.
AR# 20377
日期 02/21/2007
状态 Archive
Type 综合文章
的页面