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2.1-2 CPU Core Speed Derivation Procedure
1. This mainboard can auto-detect the Core/Bus (Fraction) ratio of the CPU.
If
then
1
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
Note:
SW1 is reserved for future use.
CPU Clock
Core/Bus ratio
CPU core speed =
2
3
ON
ON
ON
OFF
OFF
OFF
ON
ON
OFF
ON
ON
OFF
OFF
OFF
ON
ON
OFF
ON
ON
OFF
OFF
OFF
ON
ON
ON = Short
=
66MHz
=
5.5
Host Clock x Core/Bus ratio
=
66MHz x 5.5
=
366MHz
4
Core/Bus Ratio
ON
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF
OFF = Open
2-2
2
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
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