W254B Datasheet, PDF (11/17 Pages) SpectraLinear Inc – 133MHz Spread Spectrum FTG for Mobile Pentium® III Platforms

W254B
Table 9. Spread Spectrum and Overclocking Mode Select
Byte 0
Byte 5
Bit 3
Bit 5 Bit 6
SS % Overclock %
Description and Comments
0
Spread
0
Spectrum
ON
1
1
0
–0.5%
0%
No overclocking (Default)
1
±0.5%
0%
No overclocking
0
–0.5%
5% ^[10]
1
±0.5%
5% ^[10]
0
0
Spread
0
1
Spectrum
OFF
1
0
1
1
-
0%
No overclocking
-
10% ^[10]
-
5% ^[10]
-
15% ^[10]
Note:
10. Overclocking not tested; characterized at room temperature only. Base Frequency determined through hardware select pins, FS0 & FS1.
Document #: 38-07233 Rev. *A
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