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  3. AR# 7872: 2.1i Ngdbuild: WARNING:NgdHelpers:359 - The input pad net "U_Txclk" driving one or more clock

AR# 7872

2.1i Ngdbuild: WARNING:NgdHelpers:359 - The input pad net "U_Txclk" driving one or more clock

Description

Keywords:

Warning, NgdHelpers, 359, Driving, Clock, Buffer, Bufg

Urgency: Standard

General Description:

Running Ngdbuild, the following warning may occur:

WARNING:NgdHelpers:359 - The input pad net "U_Txclk" driving one or more clock

What does this warning mean?

Solution

This warning is caused by using combinatorial logic or a regular buffer other the bufg
to drive clock pins of Flip FLops. As long as timing and skew are within the design
requirement, this warning can be safely ignored.
AR# 7872
Date 12/10/2001
Status Archive
Type General Article