IEI Integration WAFER-LX v1.0 - Manual (Page 114)

WAFER-LX
3. VCC1_8
4. VCC3
5. VCC5
6. VCC12
7. VBAT
Frequency/Voltage
The Frequency/Voltage menu (BIOS Menu 16) can be used to set the Spread Spectrum
parameters.
TBD
BIOS Menu 17: Frequency/Voltage
Spread Spectrum
The Spread Spectrum option allows you to reduce the EMI of your board by modulating the
signals it generates so that the spikes are reduced to flatter curves. It achieves this by varying the
frequency slightly so that the signal does not use any particular frequency for more than a moment.
The spread spectrum has the following configuration options
Default
0.80 Down
1.00 Down
1.25 Down
1.50 Down
1.75 Down
2.00 Down
2.50 Down
3.00 Down
0.30 center
0.40 center
0.50 center
0.60 center
0.80 center
1.00 center
1.25 center
4-49 4-49