LSI Symbios SYM8953U User Manual
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LSI Symbios SYM8953U User Manual

Pci to ultra2 scsi host adapter
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®
Symbios
SYM8953U
PCI to Ultra2 SCSI
Host Adapter
User's Guide
December 1999
Version 1.0
®
Order Number S14036

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Summary of Contents for LSI Symbios SYM8953U

  • Page 1 ® Symbios SYM8953U PCI to Ultra2 SCSI Host Adapter User’s Guide December 1999 Version 1.0 ® Order Number S14036...

  • Page 2: Electromagnetic Compatibility Notices

    Consult the dealer or an experienced radio/TV technician for help. Shielded cables for SCSI connection external to the cabinet are used in the compliance testing of this Product. LSI Logic is not responsible for any radio or television interference caused by unauthorized modification of this equipment or the substitution or attachment of connecting cables and equipment other than those specified by LSI Logic.
  • Page 3 LSI Logic; nor does the purchase or use of a product from LSI Logic convey a license under any patent rights, copyrights, trademark rights, or any other of the intellectual property rights of LSI Logic or third parties.

  • Page 5: Table Of Contents

    Contents Chapter 1 Using the SYM8953U Host Adapter General Description Features 1.2.1 1.2.2 1.2.3 Interface Descriptions 1.3.1 1.3.2 1.3.3 1.3.4 1.3.5 Chapter 2 Installing the SYM8953U Host Adapter Quick Installation Procedure Detailed Installation Procedure 2.2.1 2.2.2 2.2.3 2.2.4 2.2.5 2.2.6 2.2.7...
  • Page 6 The PCI Interface The SCSI Interface On-Board LED The SCSI Busy LED Hardware Connections for the SYM8953U Host Adapter Inserting the Host Adapter SCSI Cables Internal SCSI Ribbon Cable to Host Adapter Connection Internal SCSI Ribbon Cable to Internal SCSI Device...
  • Page 7 Device Properties Menu (Left Half) Device Properties Menu (Right Half) Boot Adapter List Menu Global Properties Menu Exit Menu SYM8953U Mechanical Drawing SCSI Bus Widths and Speeds SCSI Bus Lengths SCSI ID Record Configuration Commands Main Menu Fields and Descriptions...
  • Page 8 viii Contents...
  • Page 9 Preface This book is the primary reference and user’s guide for the LSI Logic Symbios complete functional description for the SYM8953U as well as complete physical and electrical specifications. Audience This document assumes that you have some familiarity with SCSI protocol and related support devices and will benefit persons installing and using the SYM8953U Host Adapter Board.
  • Page 10 Related Publications Symbios Guide, LSI Logic Corporation, Order Number S14007 Symbios Manual, LSI Logic Corporation, Order Number S14028 Preface ® PCI SCSI Device Management System SDMS™ 4.0 User’s ® SYM53C895A PCI to Ultra2 SCSI Controller Technical...

  • Page 11: Chapter 1 Using The Sym8953U Host Adapter

    The LSI Logic Corporation Symbios Host Adapter board provides an Ultra2 SCSI interface to PCI computer systems. It is referred to as the SYM8953U throughout this guide. Installing this adapter in your PCI system allows connection of up to 15 SCSI devices.

  • Page 12: Features

    This user’s guide, along with the Symbios PCI SCSI Device Management System SDMS 4.0 User’s Guide, contains a complete library of product information and installation instructions. With this information, the full benefits of your SYM8953U PCI to Ultra2 SCSI Host Adapter are available to you. 1.2 Features...

  • Page 13: Board Characteristics

    Contains external 68-pin High Density (HD) and internal 68-pin HD latching connectors Performs wide Ultra2 SCSI LVD synchronous transfers up to 80 Mbytes/s Supports SCSI synchronous offset up to 31 Provides SCSI termination power (TERMPWR) source with autoresetting circuit protection device Supports SCSI Configured AutoMatically (SCAM) Level 1 Capability (Set “OFF”...

  • Page 14: The Pci Interface

    SCSI standards. The SCSI interface on the SYM8953U operates as an 8-bit or 16-bit interface. It supports 8-bit or 16-bit, synchronous and asynchronous, LVD or SE, Fast, Ultra and Ultra2 SCSI protocols in various combinations. The interface is made through connectors J2 and J3 (see connector J2 is a 68-pin HD right angle latching connector.

  • Page 15: Ultra2 Scsi Technology

    1.3.3 Ultra2 SCSI Technology The SYM8953U fully supports Ultra2 SCSI. Ultra2 SCSI is an extension of the SCSI Parallel Interface 2 and 3 (SPI-2 and SPI-3) family of standards. SCSI2 expands the bandwidth of the SCSI bus, allowing faster synchronous data transfers.

  • Page 16: 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 Using the SYM8953U Host Adapter 34.5 pc To utilize Ultra2 SCSI performance, you must only have LVD devices on the bus.

  • Page 17: Chapter 2 Installing The Sym8953U Host Adapter

    Chapter 2 Installing the SYM8953U Host Adapter This chapter provides instructions on how to install the SYM8953U Host Adapter and includes these topics: Section 2.1, “Quick Installation Procedure,” page 2-1 Section 2.2, “Detailed Installation Procedure,” page 2-3 Section 2.3, “Completing the Installation,” page 2-24 2.1 Quick Installation Procedure...
  • Page 18 Handle plug-in boards by the edge; do not touch board components or gold connector contacts. The use of a static ground strap is recommended. The SYM8953U requires a PCI slot that allows bus master operation. See Figure 2.2.

  • Page 19: Detailed Installation Procedure

    2.2 Detailed Installation Procedure This section provides step-by-step instructions for installing the SYM8953U host adapter board, and connecting it to your SCSI peripherals. If you are experienced in these tasks, you may prefer to use Section 2.1, “Quick Installation Procedure.”...

  • Page 20: Inserting The Host Adapter

    SYM8953U. Step 1. Ground yourself before removing this host adapter board. Step 2. Remove the SYM8953U PCI to Ultra2 SCSI Host Adapter Step 3. Switch off the computer and unplug power cords for all Step 4. Remove the cover from your computer per the instructions in Caution: Step 5.

  • Page 21: Hardware Connections For The Sym8953U Host Adapter

    Figure 2.1 Hardware Connections for the SYM8953U Host Adapter Internal SCSI Interface External SCSI Interface Step 7. Carefully insert edge connector J1 (see Note: Detailed Installation Procedure 34.5 pc SYM8953U J1 to PCI Mainboard adapter into the PCI slot. Make sure the edge connector is properly aligned before...

  • Page 22: Inserting The Host Adapter

    Figure 2.2 Inserting the Host Adapter Bracket Screw Bracket Surround Step 8. Secure the board with the bracket screw (see Installing the SYM8953U Host Adapter 34.5 pc making the internal and external SCSI bus connections. 4.333 pc Figure 2.2) before 48.583 p...

  • Page 23: Connecting The Scsi Peripherals

    The connectors on this cable may also be keyed to ensure proper pin-1 connection. All external SCSI bus connections to the SYM8953U host adapter are made with high quality shielded 68 conductor cables (see The connectors on this cable are always keyed to ensure proper pin-1 connection.
  • Page 24 1. This parameter may be exceeded in point-to-point and engineered applications. 2. Additional spacing rules apply. 3. SE and high power differential are not defined at Ultra2 speeds. Installing the SYM8953U Host Adapter 34.5 pc SCSI Bus Lengths Maximum Bus Length, Meters Differential –...

  • Page 25: Scsi Cables

    34.5 pc Figure 2.3 SCSI Cables Terminated SCSI Cable for Internal Connections (for use with nonterminated internal devices) Terminated End SCSI Cable for Internal Connections SCSI Cable for External Connections Detailed Installation Procedure 4.333 pc 68-pin HD 68-pin HD 68-pin HD 48.583 p 52.5 pc...

  • Page 26: Making Internal Scsi Bus Connections

    SCSI bus connections. Step 1. Plug one end of the 68-pin internal SCSI ribbon cable into Important: Figure 2.4 2-10 Installing the SYM8953U Host Adapter 34.5 pc connector J2 (see Figure 2.4). You must match pin 1 on this and all subsequent connections.

  • Page 27: Internal Scsi Ribbon Cable To Internal Scsi Device Connection

    Step 2. If you have only two internal devices to connect, plug the other Note: Figure 2.5 Internal SCSI Ribbon Cable to Internal SCSI Device Connection Detailed Installation Procedure 34.5 pc end of the internal SCSI ribbon cable into the SCSI connector on your internal SCSI device.

  • Page 28: Connecting Additional Internal Scsi Devices

    Step 3. Plug the cable into each additional device as needed. Figure 2.6 Connecting Additional Internal SCSI Devices 2-12 Installing the SYM8953U Host Adapter 34.5 pc page 2-14. An example of this type of chained connection is shown in Figure 2.7.

  • Page 29: Multiple Internal Scsi Devices Chained Together

    34.5 pc Figure 2.7 Multiple Internal SCSI Devices Chained Together Detailed Installation Procedure 4.333 pc 48.583 p 2-13 52.5 pc...

  • Page 30: Scsi Led Connector

    Most PC cabinets are designed with a front panel LED. Step 4. Connect the LED cable to connector J4 on the host adapter, as Figure 2.8 2-14 Installing the SYM8953U Host Adapter 34.5 pc shown in Figure 2.8. When properly connected, the front panel LED lights when there is activity on the SCSI bus.

  • Page 31: Making External Scsi Bus Connections

    2.2.5 Making External SCSI Bus Connections This section provides step-by-step instructions about making external SCSI bus connections. To connect external SCSI devices to the SYM8953U host adapter: Step 1. Plug the 68-pin HD connector on one end of a shielded external Figure 2.9...

  • Page 32: External Scsi Device Cable

    Section 2.2.6, “SCSI Bus Termination,” page 2-18 instructions. If you have multiple SCSI devices, proceed to the next page. 2-16 Installing the SYM8953U Host Adapter 34.5 pc external SCSI cable into the SCSI connector on your external SCSI device. An example of this connection is shown in Figure 2.10.

  • Page 33: Multiple External Scsi Devices Chained Together

    34.5 pc Step 3. Chain multiple devices together with shielded external SCSI cables. An example of these chained connections is shown in Figure 2.11. Figure 2.11 Multiple External SCSI Devices Chained Together After you have connected all of your internal and external devices, proceed to Section 2.2.6, “SCSI Bus Termination.”...

  • Page 34: Scsi Bus Termination

    2.1). The three bus configurations are: Section 2.2.6.1, “Internal Bus Connections” Section 2.2.6.2, “External Bus Connections” Section 2.2.6.3, “Internal and External Bus Connections” Termination on the SYM8953U host adapter for these three different bus configurations is discussed below. 2-18 Installing the SYM8953U Host Adapter 34.5 pc...

  • Page 35: Internal Scsi Device Termination

    2.2.6.1 Internal Bus Connections If you have only internal SCSI device connections to your host adapter, you must terminate the last internal device on the SCSI bus. You must disable the terminators on all other devices. Termination on your host adapter is automatically enabled in this case.

  • Page 36: External Scsi Device Termination

    SCSI bus configuration. Figure 2.13 External SCSI Device Termination Last Device on Bus - Terminators Enabled 2-20 Installing the SYM8953U Host Adapter 34.5 pc shows an example of how termination is determined for this Does not end Bus - Terminators Disabled...

  • Page 37: Internal And External Scsi Device Termination

    2.2.6.3 Internal and External Bus Connections If you have both internal and external SCSI device connections to your host adapter, you must terminate the last internal and last external devices on the SCSI bus. You must also disable the termination on all other devices.

  • Page 38: Setting Scsi Ids

    SCSI ID on the bus. Typically, SCSI ID 0 is used; however, for system performance optimization, an ID other than 0 (zero) can be used. Chapter 3, “Configuring the SYM8953U Host Adapter” set the host adapter ID using the Symbios SCSI BIOS Configuration Utility.

  • Page 39: Scsi Id Record

    34.5 pc Table 2.3 SCSI ID Record SCSI ID SCSI Device SYM8953U Host Adapter (default) Detailed Installation Procedure 4.333 pc 48.583 p 2-23 52.5 pc...

  • Page 40: Completing The Installation

    Step 4. Wait for your computer to boot up. Step 5. To change the configuration of the host adapter, see Step 6. Load the software and drivers suitable to your application and 2-24 Installing the SYM8953U Host Adapter 34.5 pc “Configuring the SYM8953U Host system.

  • Page 41: Chapter 3 Configuring The Sym8953U Host Adapter

    3-3 3.1 Overview of the SCSI BIOS Configuration Utility The SYM8953U Host Adaptor is loaded with Symbios SCSI BIOS and Configuration Utility Version 4.15 (or greater). This chapter describes the process you need to follow to change configuration settings on your board.

  • Page 42: Starting The Configuration Utility

    NVRAM is valid. “Found SCSI Controller not in following Boot Order List, to Add: Press Ctrl-C to start Symbios Configuration Configuring the SYM8953U Host Adapter 34.5 pc 4.333 pc 48.583 p...

  • Page 43: Exiting The Scsi Bios Configuration Utility

    Utility...” appears when less than four adapters are in the boot order and more adapters exist than are shown. NonVolatile Random Access Memory (NVRAM) is available on the SYM8953U Host Adapter. Changes can be made and stored using this menu driven utility. Important: Note: 3.1.2 Exiting the SCSI BIOS Configuration Utility...

  • Page 44: Main Menu

    SCSI devices attached to it. You can select an adapter only if Current Status is “On.” Changes are possible since NVRAM is present on this host adapter. Configuring the SYM8953U Host Adapter 34.5 pc Configuration Commands Description Provides context sensitive help for the cursor resident field.

  • Page 45: Main Menu

    The Symbios SCSI BIOS Configuration Utility Menus <Global Properties> Port Boot Number Order FC00 F800 E400 = Select Item -/+ = [Change Item] Enter = Execute <Item> 4.333 pc Table LSI Logic Control Enabled Disabled Enabled 48.583 p 52.5 pc...

  • Page 46: Adapter Properties Menu

    The Symbios SCSI BIOS traverses up to four adapters in the specified order in search of bootable media. To modify this field, access the Boot Adapter List Menu. Indicates whether an adapter is eligible for LSI Logic Symbios software control or is reserved for control by non-Symbios software.

  • Page 47: Adapter Properties Menu

    34.5 pc Figure 3.2 Adapter Properties Menu Symbios PCI SCSI Configuration Utility Version PCI 4.15.00 Adapter Properties SYM53C895A <Device Properties> SCSI Parity Host SCSI ID SCSI Bus Scan Order [Low to High (0.Max)] Removable Media Support CHS Mapping Spinup Delay (Secs) [2] Secondary Cluster Server Termination Control [Auto]...

  • Page 48: Adapter Properties Fields And Descriptions

    Support [None / Boot Drive Only / With Media Installed] Configuring the SYM8953U Host Adapter 34.5 pc lists the fields you can access and their descriptions. If the field displays in black text it is available for changes. If it displays in white text, it is not available.
  • Page 49 Table 3.3 Adapter Properties Fields and Descriptions (Cont.) Field Field Type [Value] CHS Mapping Configuration [SCSI Plug and Play Mapping / Alternate CHS Mapping] Spinup Delay Configuration (Seconds) [1 to 15] Secondary Cluster Configuration Server [Yes / No] Termination Control Configuration [Auto / Off] <Restore Defaults>...

  • Page 50: Device Properties Menu

    The example for the Device Properties Menu is split (Figure 3.3 3-10 Configuring the SYM8953U Host Adapter 34.5 pc Figure 3.4) due to the width of its multiple fields/columns.

  • Page 51: Device Properties Menu (Left Half)

    Figure 3.3 Device Properties Menu (Left Half) Symbios PCI SCSI Configuration Utility Version PCI 4.15.00 Device Properties SYM53C895A SCSI Device Identifier Quantum Viking 4.5 Quantum Viking 4.5 Quantum Viking 4.5 Quantum Viking 4.5 Quantum Viking 4.5 Quantum Viking 4.5 SYM53C895A F1 = Help Esc = Abort/Exit The Symbios SCSI BIOS Configuration Utility Menus...

  • Page 52: Device Properties Menu (Right Half)

    Quantum Viking 4.5 < 10> Quantum Viking 4.5 < 10> Quantum Viking 4.5 < 10> Quantum Viking 4.5 < 10> SYM53C895A F1 = Help Esc = Abort/Exit 3-12 Configuring the SYM8953U Host Adapter 34.5 pc SCSI Queue Boot Timeout Tags Choice...

  • Page 53: Device Properties Fields And Descriptions

    Table 3.4 Table 3.4 Device Properties Fields and Descriptions Field Field Type [Value] SCSI ID Information Device Identifier Information Sync Rate Configuration [0 / 5 / 10 / 20 / 40] Data Width Configuration [8 / 16] Scan ID Configuration [Yes / No] Scan LUNs >...
  • Page 54 Executable Verify Executable <Restore Defaults> Executable 3-14 Configuring the SYM8953U Host Adapter 34.5 pc Description Indicates whether to allow a device to disconnect during SCSI operations. Some (usually newer) devices run faster with disconnect enabled, while some (usually older) devices run faster with disconnect disabled.

  • Page 55: Boot Adapter List Menu

    3.2.5 Boot Adapter List Menu The Boot Adapter List Menu specifies the order in which adapters boot when more than one Symbios adapter is in a system. Up to four of the total adapters in a system can be selected as bootable. This menu may also list additional adapters in your system that are not bootable.

  • Page 56: Boot Adapter List Menu

    Hit Insert to select an adapter from this list. <SYM53C895A <SYM53C896 <SYM53C896 F1 = Help Esc = Abort/Exit 3-16 Configuring the SYM8953U Host Adapter 34.5 pc provides an example of the Boot Adapter List Menu. Boot Adapter List Menu Dev/ Func 98>...

  • Page 57: Boot Adapter List Fields And Descriptions

    Table 3.5 Table 3.5 Boot Adapter List Fields and Descriptions Field Field Type [Value] Adapter Information PCI Bus Information Dev/Func Information Boot Order Configuration [0 to 3] Current Status Information Next Boot Configuration [On / Off] The Symbios SCSI BIOS Configuration Utility Menus 34.5 pc lists the fields on this menu and their descriptions.

  • Page 58: Global Properties Menu

    Figure 3.6 Symbios PCI SCSI Configuration Utility Version PCI 4.15.00 Global Properties F1 = Help Esc = Abort/Exit 3-18 Configuring the SYM8953U Host Adapter 34.5 pc Figure 3.6 Global Properties Menu Pause If Boot Alert Displayed Boot Information Display Mode Video Mode <Restore Defaults>...

  • Page 59: Global Properties Fields And Descriptions

    Table 3.6 Table 3.6 Global Properties Fields and Descriptions Field Field Type [Value] Pause When Boot Configuration Alert Displayed [Yes / No] Boot Information Configuration Display Mode [Terse / Verbose] Video Mode Configuration [Color / Monochrome] <Restore Defaults> Executable The Symbios SCSI BIOS Configuration Utility Menus 34.5 pc lists the fields on this menu and their descriptions.

  • Page 60: Exit Menu

    Cancel exit Save changes and exit this menu Discard changes and exit this menu 3-20 Configuring the SYM8953U Host Adapter 34.5 pc Exit Menu Cancel exit Exit the Configuration Utility Save changes and then exit this menu Discard changes and exit this menu This option returns you to the previous menu.
  • Page 61 34.5 pc If you are exiting the Main Menu, the exit menu gives you the following options: Cancel exit This returns you to the Main Menu. Exit the This option exits the configuration and returns you to the Configuration DOS prompt. Utility Important: You must reboot in order for the changes you have made...
  • Page 62 3.75 pc 10.25 pc 11.25 pc 38.25 pc 34.5 pc 4.333 pc 44.25 pc 48.583 p 3-22 Configuring the SYM8953U Host Adapter 52.5 pc...

  • Page 63: A.1.1 Physical Characteristics

    FCC. A.1.1 Physical Characteristics The dimensions of the SYM8953U Host Adapter board are 6.00 x 3.50 inches. PCI connection is made through edge connector J1. Internal SCSI connection is made through the 68-pin HD connector J2.

  • Page 64: A.1.2 Electrical Characteristics

    J3: 68-pin HD connector. • J4: 4 pin low density connector. A.1.2 Electrical Characteristics The SYM8953U maximum power requirement, including SCSI TERMPWR (termination power), under normal operation is as follows: Table A.1 + 5 V DC Under abnormal conditions such as a short on SCSI TERMPWR, + 5 V current may be higher.

  • Page 65: A.1.4 Electromagnetic Compliance

    PCI bus slot, all voltages are below the SELV 42.4 V limit. A.2 Operational Environment The SYM8953U host adapter is designed for use in PCI computer systems. SDMS operates the board, but the design of the board does not prevent the use of other software.

  • Page 66: The Pci Interface

    A.2.1 The PCI Interface The PCI interface operates as a 32-bit DMA bus master. The connection is made through edge connector J1, which provides connections on both the front and back of the board. The signal definitions and pin numbers conform to the PCI Local Bus Specification Revision 2.2 standard.

  • Page 67: Pci Connector J1 (Front

    Table A.2 PCI Connector J1 (Front) Signal Name =12 V + 5 V + 5 V INTB/ INTD/ GND (PRSNT1/) RESERVED GND (PRSNT2/) KEYWAY KEYWAY RESERVED REQ/ VI/O AD31 AD29 1. Highlighted signals are not connected. Operational Environment 34.5 pc Signal Name AD27 AD25...

  • Page 68: Pci Connector J1 (Back

    Table A.3 PCI Connector J1 (Back) Signal Name TRST/ + 12 V + 5 V INTA/ INTC/ + 5 V RESERVED + 5 V RESERVED KEYWAY KEYWAY RESERVED RST/ VI/O GNT/ RESERVED AD30 + 3.3 V 1. Highlighted signals are not connected. Technical Specifications 34.5 pc Signal Name...

  • Page 69: The Scsi Interface

    A.2.2 The SCSI Interface The SCSI interface conforms to ANSI X 3T10.11/1142. The SCSI interface operates as 16-bit, synchronous or asynchronous, SE or LVD, and supports SCSI-3 protocols and 8-bit and 16-bit arbitration. The interface is made through connectors J2 and J3. Active SE or LVD SCSI termination is provided automatically.

  • Page 70: Internal Scsi Connector J2

    Table A.4 Signal Name SD12+ SD13+ SD14+ SD15+ SDP1+ SD00+ SD01+ SD02+ SD03+ SD04+ SD05+ SD06+ SD07+ SDP0+ DIFFSENS TERMPWR TERMPWR SATN+ SBSY+ SACK+ SRST+ SMSG+ SSEL+ SCD+ SREQ+ SIO+ SD08+ SD09+ SD10+ SD11+ Technical Specifications 34.5 pc Internal SCSI Connector J2 Signal Name SD12 SD13...

  • Page 71: External Scsi Connector J3

    34.5 pc Table A.5 External SCSI Connector J3 Signal Name SD12+ SD13+ SD14+ SD15+ SDP1+ SD00+ SD01+ SD02+ SD03+ SD04+ SD05+ SD06+ SD07+ SDP0+ DIFFSENS TERMPWR TERMPWR SATN+ SBSY+ SACK+ SRST+ SMSG+ SSEL+ SCD+ SREQ+ SIO+ SD08+ SD09+ SD10+ SD11+ Note: When operated in the SE mode, all signals with the + suffix are clamped to ground.

  • Page 72: A.2.3 On-Board Led

    A.2.4 The SCSI Busy LED The SCSI Activity LED interface on the SYM8953U is a four-wire arrangement that allows the user to connect a LED harness to the board. The buffered GPIO0_FETCH line (maximum output low voltage 0.4 V and minimum output low current 16 mA) is pulled low to complete the circuit when a harness with a LED is attached.

  • Page 73: Appendix B Glossary Of Terms And Abbreviations

    A unit of information consisting of eight bits. CISPR A special international committee on radio interference (Committee, International and Special, for Protection in Radio). Symbios SYM8953U PCI to Ultra2 SCSI Host Adapter 34.5 pc 4.333 pc 12 pc 12.938 p 13.851 p...
  • Page 74 Configuration Refers to the way a computer is set up; the combined hardware components (computer, monitor, keyboard, and peripheral devices) that make up a computer system; or the software settings that allow the hardware components to communicate with each other. Central Processing Unit.
  • Page 75 File A named collection of information stored on a disk. Firmware Software that is permanently stored in ROM. Therefore, it can be accessed during boot time. Hard Disk A disk made of metal and permanently sealed into a drive cartridge. A hard disk can store very large amounts of information.
  • Page 76 Main Memory The part of a computer’s memory which is directly accessible by the CPU (usually synonymous with RAM). Mbyte Megabyte. A measure of computer storage equal to 1024 kilobytes. Motherboard See Mainboard. In some countries, the term Motherboard is not appropriate.
  • Page 77 CPU. Information can be written to and read from RAM. The contents of RAM are lost when the computer is turned off. RISC Core LSI Logic SCSI chips contain a RISC (Reduced Instruction Set Computer) processor, programmed through microcode scripts. Read Only Memory. Memory from which information can be read but not changed.
  • Page 78 SCRIPTS processor fetches SCRIPTS instructions from system memory to control operation of the SYM53C8XX device. SDMS SCSI Device Management System. A LSI Logic software product that manages SCSI system I/O. Single-Ended A hardware specification for connecting SCSI devices. It references each SCSI SCSI signal to a common ground.
  • Page 79 Ultra2 SCSI A standard for SCSI data transfers. It allows a transfer rate of up to 40 Mbytes/s over an 8-bit SCSI bus, and up to 80 Mbytes/s over a 16-bit SCSI bus. SCSI Trade Association (STA) supports using the term “Ultra2 SCSI”...
  • Page 80 3.75 pc 10.25 pc 11.25 pc 38.25 pc 34.5 pc 4.333 pc 44.25 pc 48.583 p Glossary of Terms and Abbreviations 52.5 pc...

  • Page 81: Index

    3-12 Device Selections Menu 3-10 device/function description disconnect description 3-14 Symbios SYM8953U PCI to Ultra2 SCSI Host Adapter 34.5 pc duplication of SCSI IDs edge connector Electrical Characteristics Electromagnetic Compliance Erroneous Termination External SCSI Bus Connections External SCSI Connector J3...
  • Page 82 interrupt request line LED cable 2-14 LED Connector 2-14 LVD Link Technology Main Menu Display menus device properties 3-11 3-12 global properties 3-18 Multiple Internal SCSI Devices 2-13 next boot description 3-17 nonvolatile memory Operational Environment PCI bus description PCI Connector J1 (Back) PCI Connector J1 (Front) PCI Interface 1-2, 1-4, peripheral device SCSI IDs...

  • Page 83: Customer Feedback

    Customer Feedback We would appreciate your feedback on this document. Please copy the following page, add your comments, and fax it to us at the number shown. If appropriate, please also fax copies of any marked-up pages from this document. Important: Please include your name, phone number, fax number, and company address so that we may contact you directly for...
  • Page 84 Reader’s Comments Fax your comments to: Please tell us how you rate this document: Symbios® SYM8953U PCI to Ultra2 SCSI User’s Guide. Place a check mark in the appropriate blank for each category. Completeness of information Clarity of information Ease of finding information...
  • Page 85 U.S. Distributors by State A. E. Avnet Electronics Colorado http://www.hh.avnet.com Denver B. M. Bell Microproducts, A. E. Inc. (for HAB’s) B. M. http://www.bellmicro.com W. E. I. E. Insight Electronics Englewood http://www.insight-electronics.com I. E. W. E. Wyle Electronics http://www.wyle.com Connecticut Cheshire Alabama A.
  • Page 86 U.S. Distributors by State (Continued) New York South Carolina Hauppauge A. E. I. E. Tel: 516.761.0960 W. E. Long Island South Dakota A. E. Tel: 516.434.7400 A. E. W. E. Tel: 800.861.9953 W. E. Rochester A. E. Tel: 716.475.9130 Tennessee I.
  • Page 87 Direct Sales Representatives by State (Component and HAB) E. A. Earle Associates Texas E. L. Electrodyne - UT Austin Group 2000 I. S. Infinity Sales, Inc. Arlington ION Associates, Inc. R. A. Rathsburg Associ- Houston ates, Inc. Synergy Associates, Utah Inc.
  • Page 88 Ottawa Tel: 613.592.1263 Kentucky Fax: 613.592.3253 Bowling Green Tel: 270.793.0010 Fax: 270.793.0040 INTERNATIONAL Taiwan Taipei France LSI Logic Asia, Inc. Paris Taiwan Branch LSI Logic S.A. Tel: 886.2.2718.7828 Immeuble Europa Fax: 886.2.2718.8869 Tel: 33.1.34.63.13.13 Fax: 33.1.34.63.13.19 United Kingdom Bracknell Germany...

  • Page 89: International Distributors

    Fax: 86.10.6804.2521 Acal Nederland b.v. Tel: 31.40.2.502602 France Fax: 31.40.2.510255 Rungis Cedex Azzurri Technology France Switzerland Tel: 33.1.41806310 Brugg Fax: 33.1.41730340 LSI Logic Sulzer AG Tel: 41.32.3743232 Germany Fax: 41.32.3743233 Haar EBV Elektronik Taiwan Tel: 49.89.4600980 Taipei Fax: 49.89.46009840 Avnet-Mercuries...

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