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# 6342

M1.5: Trce 1.5is2: WARNING:basts:157 - PERIOD TIMESPEC ...contains a mixture of pad and synchronous elements

Description

General description:

In trace1.5is2 sometimes you will get the warning like this:

WARNING:basts:157 - PERIOD TIMESPEC 'TS_MYCLk' has TIMEGRP

'MYCLK' which contains a mixture of PADs and synchronous

elements. The PADs in this group will be exempt from analysis by the

trce application. The ability to mix PADs and synchronous elements

in a PERIOD group will soon be obsoleted.

解决方案

Currently PERIOD constraint covers input pad to synchronous element and

from synchronous element to synchronous element but excludes synchronous

element to output pad. In next release input pad to synchronous element

will not be included any longer.

So the technique is to either have the offset or

have a FROM pads TO ffs constraint.

AR# 6342
创建日期 08/31/2007
Last Updated 01/18/2010
状态 Archive
Type 综合文章