LSI SYM8953U manual On-Board LED

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integration of I/O transceivers into the chip. LVD provides the reliability of HVD SCSI without the added cost of external differential transceivers. Ultra2 SCSI with LVD allows a longer SCSI cable and more devices on the bus, using the same cables defined in the SCSI-3 parallel Interface (SPI-2) standard for Ultra SCSI.

Important: To utilize Ultra2 SCSI performance, you must only have LVD devices on the bus. Do not mix any SE devices with LVD devices or the entire bus will drop to SE, limiting bus performance to Ultra SCSI levels.

1.3.5 On-Board LED

An on-board LED (CR1) indicates the status of the SCSI bus. This SCSI Activity LED lights when the SCSI bus is transferring information. It is located near J4 (see Figure A.1).

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Using the SYM8953U Host Adapter

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Contents User’s Guide DecemberElectromagnetic Compatibility Notices Iii Page Contents Appendix a Technical Specifications Tables ViiiContents Audience PrefaceOrganization Related Publications Chapter Using the SYM8953U Host Adapter General DescriptionPCI Interface FeaturesScsi Interface Board Characteristics Interface DescriptionsPCI Interface LVD Link Technology Ultra2 Scsi TechnologyBenefits of LVD Link On-Board LED Chapter Installing the SYM8953U Host Adapter Quick Installation ProcedureInstalling the SYM8953U Host Adapter Detailed Installation Procedure Before You StartInserting the Host Adapter Hardware Connections for the SYM8953U Host Adapter Inserting the Host Adapter Connecting the Scsi Peripherals Scsi Bus Widths and SpeedsScsi Bus Lengths LVDScsi Cables Making Internal Scsi Bus Connections Internal Scsi Ribbon Cable to Host Adapter ConnectionDetailed Installation Procedure Connecting Additional Internal Scsi Devices Multiple Internal Scsi Devices Chained Together Scsi LED Connector Making External Scsi Bus Connections External Cable to Host Adapter10 External Scsi Device Cable 11 Multiple External Scsi Devices Chained Together Scsi Bus Termination Internal Bus Connections 12 Internal Scsi Device TerminationExternal Bus Connections 13 External Scsi Device TerminationInternal and External Bus Connections 14 Internal and External Scsi Device TerminationSetting Scsi IDs Scsi ID Record Completing the Installation Verify Installation Procedures DoneChapter Configuring the SYM8953U Host Adapter Overview of the Scsi Bios Configuration UtilityStarting the Configuration Utility Exiting the Scsi Bios Configuration Utility Symbios Scsi Bios Configuration Utility MenusUsing the Menus Configuration Commands Main MenuMain Menu Main Menu Fields and DescriptionsAdapter Properties Menu NVMAdapter Properties Menu Adapter Properties Fields and Descriptions Field Field Type Descriptions ValueIs moved between adapters from different vendors Device Properties Menu Device Properties Menu Left Half Device Properties Menu Right Half Device Properties Fields and Descriptions Field Field Type Description ValueForever should an operation fail Boot Adapter List Menu Boot Adapter List Menu Boot Adapter List Fields and Descriptions Global Properties Menu Global Properties MenuGlobal Properties Fields and Descriptions Exit Menu Exit MenuSymbios Scsi Bios Configuration Utility Menus Configuring the SYM8953U Host Adapter Physical Characteristics Appendix a Technical SpecificationsPhysical Environment Electrical Characteristics Table A.1 Maximum Power RequirementsThermal, Atmospheric Characteristics Safety CharacteristicsOperational Environment Electromagnetic CompliancePCI Interface Table A.2 PCI Connector J1 Front Signal Name PinTable A.3 PCI Connector J1 Back Scsi Interface Table A.4 Internal Scsi Connector J2 SDP1+ SDP1−Table A.5 External Scsi Connector J3 Table A.6 LED Connector J4 Scsi Busy LEDAppendix B Glossary of Terms Abbreviations Configuration DMA BusMaster Device DriverFile FirmwareHard Disk HostMain Memory MbyteMotherboard MultitaskingPort Address Port NumberQueue Tags Risc CoreSystem Bios Scsi DeviceProcessor Single-EndedUltra2 Scsi Virtual MemoryWide Scsi Wide Ultra ScsiGlossary of Terms and Abbreviations Index IX-1IX-2Index Customer Feedback Reader’s Comments Excellent Good Average Fair PoorDistributors by State CaliforniaNew York Direct Sales Representatives by State Component and HAB Sales Offices and Design Resource Centers InternationalInternational Distributors