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AR# 3567

CPLD: 9500/XL :Sourcing internal logic with a global buffer

Description

Urgency: standard

General Description:

What kind of logic can I drive with a BUFG?

Solution

If you try to use a global buffer to drive logic the fitter will use a regular IBUF instead.

However if you are driving multiple clocks and some logic, it will use the BUFG

to drive the clocks and the IBUF (from the same pad) to drive the combinatorial

logic.

AR# 3567
Date Created 08/21/2007
Last Updated 12/15/2012
Status Active
Type General Article