FSB auto-detection in Athlon XP

The following report is applicable the Barton, Thoroughbred and Thorton
However, my presumed part is contained. Please confirm for yourself.

Automatically detect the FSB setting

These pins may be used to automatically detect the front-side bus (FSB) setting of this processor.

Barton Front-Side Bus Sense Truth Table
FSBFSB_Sense[1]FSB_Sense[0]Note
AH31AG31
100 or 133 MHz::
133 MHz:C
167 MHzC:
200 MHzCC

: = Open circuit (logic level of 1)
C = Pull down to GND (logic level of 0)


FSB_Sense[1:0] controls

OFF= Open circuit (logic level of 1)
ON= Pull down to GND (logic level of 0)


FSB_Sense[1:0] ( AH30,AG31pin )

reference
AMD http://www.amd.com/
AMD Athlon XP Processor Model 10 Data Sheet 26237.pdf

2003/05/20 - 2004/01/19


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