Pro-Tech EB-471LF M1 Frequency Control Setup Screen, Auto Detect PCI CLK, Spread Spectrum

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Chapter 4 Award BIOS Setup

4-10. FREQUENCY CONTROL

Choose 〝FREQUENCY CONTROL〞 from the main menu, a display will be shown on screen as below:

Phoenix - AwardBIOS CMOS Setup Utility

Frequency Control

	Auto Detect PCI Clk	[Enabled]	Item Help
	Spread Spectrum	[Enabled]	Item Help
	Spread Spectrum	[Enabled]
			Menu Level ►

	↑↓→←: Move Enter: Select	+/-/PU/PD:Value F10:Save ESC:Exit F1:General Help
	F5: Previous Values	F6: Fail-Safe Defaults F7:Optimized Defaults

Frequency Control Setup Screen

This setup menu allows you to specify your settings for frequency control.

AUTO DETECT PCI CLK:

This item allows you to enable or disable auto detect PCI Clock.

SPREAD SPECTRUM:

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.

EB-471LF USER′S MANUAL

Page: 4-21

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Contents USER’S Manual EB-471LF Celeron M FCC Notice Table of Contents Appendix Expansion BUS Introduction Hardware Configuration About this ManualSystem Specification CPUDisplay Safety Precautions Hardware Jumper & Connector Quick Reference Table EB-471LF Connector, Jumper and Component locations Component LocationsHOW to SET the Jumpers Jumpers and CapsJumper Diagrams Jumper SettingsCOM Port Connector RS-232 RS-422 RS-485Jumper Settings Function Pin closed Illustrations RS232/422/485 COM2 SelectionHard Disk Drive LED Connector KEYBOARD/MOUSE ConnectorReset Connector JPANEL1 7,8 Reset ConnectorIrda Connector External Speaker ConnectorPower LED Connector System FAN Connector VGA ConnectorHard Disk Drive Connector PIN AssignmentUniversal Serial BUS Connector LAN ConnectorFunction Jumper Setting Clear Cmos Data SelectionPower Requirement Selection SettingsAT Power Connector Inverter ConnectorRESET/NMI Watchdog Selection IllustrationLvds Connector Panel Voltage Selection Sound Connector TV-OUT ConnectorLAN LED Software Utilities Filename Purpose Assume that CD ROM drive is D IntroductionVGA Driver Utility Installation of VGA Driver To update VGA Bios for LCD Flat Panel Display Flash Bios UpdateSystem Bios Update Page3-5 LAN Driver Utility IntroductionInstallation Procedure for Windows 9x/NT/2000/XP Sound Driver UtilityIntel Chipset Software Installation Utility Installation of Utility for Windows 98SE/ME/2000/XPUSB2.0 Software Installation Utility Installation of Utility for Windows 98SE/ 2000/XPWatchdog Timer Configuration Configuration SequencePage3-11 Award Bios Setup Introduction Entering Setup Setup program initial screenStandard Cmos Features Cmos Setup screenIDE Primary Master / Slave IDE Secondary Master / Slave Halt on Drive a and Drive BVideo Base MemoryHard Disk Attributes Award Hard Disk Type TableQuick Power on SELF-TEST Advanced Bios FeaturesBios Features Setup Screen CPU L1 & L2 CacheTypematic Rate Setting FIRST/SECOND/ Boot DeviceBoot UP Numlock Status Typematic Delay MsecAdvanced Chipset Features Chipset Features Setup ScreenDram Data Integrity Mode Active to Precharge DelayDram RAS# to CAS# Delay System Bios CacheableAGP Aperture Size Delayed TransactionMemory Hole AT 15M-16M ON-CHIP VGAIntegrated Peripherals Setup Screen Integrated PeripheralsPrimary Master/Slave PIO Secondary Master/Slave PIO Onchip IDE DeviceOnChip Primary PCI IDE Primary Master/Slave Udma Secondary Master/Slave UdmaUSB Keyboard Support Onboard DeviceUSB Controller USB Mouse SupportSuper IO Device Power Management Power Management SetupPower Management Setup Screen Modem USE IRQReset Configuration Data PNP/PCI ConfigurationPNP/PCI Configuration Setup Screen IRQ-n Assigned to Resource Controlled byIRQ Resources PC Health Status Current Warning TemperatureCurrent CPU Temperature Current System FAN SpeedAuto Detect PCI CLK Frequency Control Setup ScreenFrequency Control Spread SpectrumLoad FAIL-SAFE Defaults Load Optimized DefaultsTo Disable the Password SET Supervisor PASSWORD/SET User PasswordTo SET a Password Save & Exit Setup Exit Without Saving Expansion BUS PC/104 Plus BUS Connector PIN Assignment Technical Summary Block Diagram Interrupt MAP IRQ AssignmentRTC & Cmos RAM MAP Code AssignmentDMA Channel Map Assignment Timer & DMA Channels MAPTimer Channel Map Assignment Map Memory MAPMemory Map