Intel 3U Compact PCI, MIC-3321 Dram RAS# to CAS# Delay, Dram RAS# Precharge, Precharge delay tRAS

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DRAM RAS# to CAS# Delay

This field is used to insert a timing delay between the CAS and RAS strobe signals, used when DRAM is written to, read from, or refreshed. Fast gives faster performance; and Slow gives more stable performance.

This field applies only when synchronous DRAM have been installed in the system. The settings are: 2,3,4,5 and auto.

DRAM RAS# Precharge

If an insufficient number of cycles is allowed for the RAS to accumulate its charge before DRAM refresh, the refresh may be incomplete and the DRAM may fail to retain data. Fast gives faster performance; and Slow gives more stable performance. This field applies only when synchronous DRAM is installed in the system. The settings are: 2,3,4,5 and Auto.

Precharge delay (tRAS)

If an insufficient number of cycles is allowed for the RAS to accumulate its charge before DRAM refresh, the refresh may be incomplete and the DRAM may fail to retain data. Fast gives faster performance; and Slow gives more stable performance. This field applies only when synchronous DRAM is installed in the system. The settings are: Auto and 2,3,4,5,6,7,8,9,10

System Memory Frequency

Default auto :The bios detect memory frequency is by SPD. The settings are: Auto and 333MHz,400MHz,533MHz.

System BIOS Cache-able

Selecting Enabled allows caching of the system BIOS ROM at F0000h- FFFFFh, resulting in better system performance. However, if any pro- gram writes to this memory area, a system error may result. The settings are: Enabled (Default) and Disabled.

Video BIOS Cacheable

Select Enabled allows caching of the video BIOS, resulting in better sys- tem performance. However, if a program writes to this area, a system error may result. The settings are: Enabled and Disabled (Default).

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Chapter4

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Contents MIC-3321 Acknowledgements Copyright NoticeCE Notification Product WarrantyTechnical Support and Assistance Safety Precaution Static ElectricityPacking List Contents CompactFlash Interface Hardware Configuration Compact Mechanical Design IntroductionOrdering Information System Memory SpecificationsBattery-backup RAM 512 KB Standard SBC FunctionsDisplay Function Block DiagramMechanical and Environmental Specifications Storage Temperature -40 ~ 80 C Board Weight 0.6 kgDip Switch Settings Board DimensionsMIC-3321 Switch Descriptions Switch LocationsMIC-3321 S2 Location 2F Safety PrecautionsPage Connecting Peripherals MIC-3321 Connector Locations 1F ConnectorsMIC-3521 Connectors MIC-3321 Connectors Overview To install a card Card InstallationTo remove a card Chassis Installation/RemovalSoftware Configuration Intel VGA Graphics Driver Intel Chipset Software Installation UtilityOverview Utilities and DriversAward Bios Setup Setup Program Initial Screen Entering SetupTime Standard Cmos SetupIDE Device Setup DateHalt On Advanced Bios Features SetupMemory CPU Thermal Monitor Hard Disk Boot PriorityVirus Warning CPU L1 & L2 Cache Quick Power On Self TestFirst/Second/Third Boot Device and Boot Other Device Boot Up NumLock StatusTypematic Rate Chars/Sec Typematic Rate SettingTypematic Delay Msec SetupdefaultDram Timing Configuration Advanced Chipset Features SetupCAS Latency Time Video Bios Cacheable Dram RAS# to CAS# DelayPrecharge delay tRAS System Bios Cache-ableIntegrated Peripherals IDE Primary/Secondary Master/Slave Udma IDE HDD Block ModeOn-Chip Primary Sata / Secondary Pata PCI IDE IDE Primary/Secondary Master/Slave PIOUSB Mouse Support USB ControllerUSB 2.0 Controller USB Keyboard SupportReset Configuration Data 5 PNP/PCI Configuration SetupInit Display Fiest PCI/VGA Palette Snoop PC Health StatusResource Controlled By IRQ ResourcesCPU Warning Temperature PC Health Status setup screenSpread Spectrum Control Load Optimized DefaultsSpread Spectrum Set Password Exit Without Saving Save & Exit SetupProgramming Watchdog Timer Data Time Interval 01 0.25 sec Appendix a Watchdog Timer ProgrammingPin Assignment Appendix B Pin Assignment Table B.2 CompactFlash Interface Pin Definitions CompactFlash InterfaceUSB 2.0 Ports VGA ConnectorCOM port PS/2 Keyboard and Mouse ConnectorSecondary IDE 44-pin 2mm Conn Ethernet 10/100/1000Base-T RJ-45 ConnectorTable B.7 Secondary IDE Connectors 2.5 HDD Serial ATA0 7pin connector