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AR# 633

XC5200: How to shut off the internal oscillator

Description

Keywords: oscillator, 5200

Urgency: Standard

Description
XC5200: How to shut off the internal oscillator

Solution

1


To turn off the XC5200 internal oscillator, set the makebit tag OscClk:UserClk
(default is OscClk:Cclk). Doing this may produce a DRC error since XACT expects
a net connected to the osc.CK pin in the top right corner of the XDE editor.

You may either ignore the DRC error, or if you want a clean DRC free design,
you may connect a grounded net to the osc.CK pin.



2

AR# 633
Date Created 09/20/1995
Last Updated 01/12/2003
Status Archive
Type General Article