Lanner electronics EM-561 Series, User Manual

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Page: 41
3.10 F
REQUENCY
/ V
OLTAGE
C
ONTROL
This section is for setting CPU Frequency / Voltage Control.
CMOS Setup Utility – Copyright © 1984-2001 Award Software
Frequency/ Voltage Control
Auto Detect DIMM/PCI Clk Enabled Item Help
Spread Spectrum Disabled
Menu Level
CPU Host /PCI Clock /PC133 Default
CPU Clock Ratio X3
á â àß
Move Enter: Select +/-/PU/PD: Value F10: Save Esc: Exit F1: General Help
F5: Previous Values F6: Fail-Safe Defaults F7: Optimized Defaults
Auto Dect DIMM/PCI Clk : This item allows you to enable / disable auto detect DIMM / PCI
Clock. The settings are “Enabled” and “Disabled”.
Spread Spectrum Modulated: When the system clock generator pulses, the extreme values of
the pulse generate excess EMI. Enabling pulse spectrum spread modulation changes the extreme
values from spikes to flat curves, thus reducing EMI. This benefit may in some cases be
outweighed by problems with timing-critical devices, such as a clock-sensitive SCSI device.
CPU Host Clock/PCI Clock/ PC133 : This item allows you to select the CPU Host / PCI Clock.
The item you can select including 100/33MHz, 103/34MHz, 110/34MHZ, 115/38MHz and Default.
CPU Clock Ratio:
This item allows you to set up the CPU clock ratio. This function depends on
your CPU specification and the change might not take affect due to the CPU specification
limitation.