USER’S GUIDE LSI8751D PCI to SCSI Host Adapter Version 3.
Electromagnetic Compatibility Notices This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. 2. This device may not cause harmful interference, and This device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules.
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Preface This book is the primary reference and user’s guide for the LSI Logic LSI8751D PCI to SCSI Host Adapter. It describes how to install and configure the LSI8751D in a PCI computer system. Basic information on setting up the SCSI bus is also provided. LSI Logic Technical Support The entire LSI Logic host adapter solution is designed for ease of use. However, if you require additional assistance, please contact the LSI Logic Technical Support Hot Line at (719) 533-7230.
• Chapter 3, Technical Specifications, describes the physical and operational environments of the LSI8751D. • Appendix A, Glossary of Terms and Abbreviations, provides definitions of various terminology that is referenced throughout this user’s guide. Related Publications PCI Storage Device Management System SDMS 4.0 User’s Guide, Order Number S14007.A Revision Record Revision Date Remarks 1.0 6/95 Final version. 2.0 3/99 Document converted to LSI format. 2.
Contents Chapter 1 Chapter 2 Chapter 3 Describing the LSI8751D 1.1 General Description 1.2 Features 1.2.1 PCI Interface 1.2.2 SCSI Interface 1.2.3 Board Characteristics 1.2.4 Ultra SCSI Installing the LSI8751D 2.1 Quick Installation Procedure 2.2 Detailed Installation Procedure 2.2.1 Before You Start 2.2.2 Inserting the Host Adapter 2.2.3 Connecting the SCSI Peripherals 2.2.4 SCSI Bus Termination 2.2.5 Setting SCSI IDs 2.3 Completing the Installation Technical Specifications 3.1 Physical Environment 3.
Appendix A Glossary of Terms and Abbreviations Customer Feedback ii Contents
Figures 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 2.14 3.
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Tables 2.1 2.2 3.1 3.2 3.3 3.4 3.
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Chapter 1 Describing the LSI8751D This chapter describes how the LSI8751D PCI to SCSI Host Adapter interfaces to PCI computer systems and includes these topics: • Section 1.1, “General Description,” page 1-1 • Section 1.2, “Features,” page 1-2 1.1 General Description The LSI8751D provides a SCSI-3, Ultra SCSI interface to PCI computer systems. Installing this adapter in your PCI system allows you to connect SCSI devices over a SCSI bus.
1.2 Features This section provides an overview of the PCI interface, the SCSI interface, and board characteristics for the LSI8751D. BIOS support for this host adapter is incorporated on the board in an 8 x 64 Kbytes Flash BIOS. 1.2.1 PCI Interface PCI is a high-speed standard local bus for interfacing a number of I/O components to the processor and memory subsystems in a high-end PC. The PCI functionality for the LSI8751D is contained within the LSI53C875J PCI to SCSI I/O Processor chip.
• 68-pin high density external dual connector • 68-pin high density internal dual connector • Fast and Ultra SCSI data transfer capability • SCSI termination power (TERMPWR) source with autoresetting circuit breaker • Flash EEPROM for BIOS storage • Serial NonVolatile Random Access Memory (NVRAM) for user configuration utility. • SCSI activity LED connector 1.2.3 Board Characteristics The board characteristics are • PCI host adapter dimensions – 5.00 x 3.25 inches (127 X82.
1-4 Describing the LSI8751D
Chapter 2 Installing the LSI8751D This chapter provides instructions on how to install the LSI8751D and includes these topics: • Section 2.1, “Quick Installation Procedure,” page 2-1 • Section 2.2, “Detailed Installation Procedure,” page 2-2 • Section 2.3, “Completing the Installation,” page 2-21 2.1 Quick Installation Procedure This section provides quick setup instructions for the experienced computer user with prior host adapter installation and SCSI bus setup experience.
Step 7. Connect the internal and external SCSI peripherals. Optional: Connect the LED cable on your SCSI host adapter. Step 8. Terminate the SCSI bus. The SCSI bus requires proper termination and no duplicate SCSI IDs. Step 9. Set the peripheral SCSI IDs. Step 10. Make any configuration changes. Step 11. Replace your PC cabinet cover. Step 12. Plug in your computer and peripherals. Step 13. Turn on the peripherals, and then your computer. The host adapter installation is complete.
2.2.2 Inserting the Host Adapter For safe and proper installation, check the user’s manual supplied with your computer and perform the following steps. Step 1. Ground yourself before handling this host adapter board. Remove the LSI8751D from the packing and check that it is not damaged. Figure 2.1 shows an example of this board. Figure 2.
by the edge; do not touch board components or gold connector contacts. The use of a static ground strap is recommended. Step 4. Locate the slots for PCI plug-in board installation. Refer to the user’s manual for your computer to confirm the location of the PCI slots. The LSI8751D requires a PCI slot which allows bus master operation. Step 5. Remove the blank panel on the back of the computer aligned with the PCI slot you intend to use. Save the bracket screw. Step 6.
Step 7. The bracket around the connectors J3 (see Figure 2.1) should fit in the slot where you removed the blank panel. Secure the bracket with the bracket screw (see Figure 2.2) before making the internal and external SCSI bus connections. 2.2.3 Connecting the SCSI Peripherals SCSI bus connections to the LSI8751D inside your computer are made with an unshielded, 68-conductor ribbon cable (see Figure 2.3). One side of this cable is marked with a color to indicate the pin-1 side.
Figure 2.
2.2.3.1 Making Internal SCSI Bus Connections This section provides step-by-step instructions for making internal SCSI bus connections: Step 1. To connect an internal SCSI device, plug the 68-pin connector on one end of the internal SCSI ribbon cable into the connector J2. Make certain to match pin 1 on both connectors. Figure 2.4 shows an example of this connection. Figure 2.
Step 2. Plug the 68-pin connector on the other end of the internal SCSI ribbon cable into the SCSI connector on your internal SCSI device. (See Figure 2.5.) Make sure to match pin 1 on all connections. Figure 2.5 Internal SCSI Ribbon Cable to Internal SCSI Device Connection Step 3. Connect additional internal SCSI devices by using an internal SCSI ribbon cable with the required number of 68-pin connectors attached along its length as shown in Figure 2.6. Figure 2.
Figure 2.7 shows an example of this type of chained connection. Make sure to match pin 1 on all connections. Figure 2.
Step 4. Most PC cabinets are designed with a front panel LED, which may already be connected to an existing IDE drive. Connect this LED cable to connector J4 on the host adapter, as shown in Figure 2.8. This allows the front panel LED to indicate activity on the SCSI bus. Connector J4 is not keyed. The orientation of the LED cable does not matter as long as all four pins are connected. Figure 2.8 SCSI LED Connector Connector J4 Some LED cables have only two wires.
2.2.3.2 Making External SCSI Bus Connections This section provides step-by-step instructions for making external SCSI bus connections: Step 1. To connect external SCSI devices to the LSI8751D, plug the 68pin connector on one end of a shielded external SCSI cable (see Figure 2.3) into the host adapter connector J3 (see Figure 2.1). This connector is now bracketed to the back panel of your computer. Figure 2.9 shows how this connection is made. Figure 2.
Step 2. Plug the 68-pin connector on the other end of the shielded external SCSI cable into the SCSI connector on the external SCSI device. Figure 2.10 shows an example of this connection. Figure 2.
Step 3. To connect more than one external SCSI device to the host adapter, you must chain them together with shielded external SCSI cables. Figure 2.11 shows an example of these chained connections. Figure 2.
2.2.4 SCSI Bus Termination The devices making up the SCSI bus are connected serially (chained together) with SCSI cables. The first and last physical SCSI devices connected on the ends of the SCSI bus must have a set of resistors called terminators. All other SCSI devices on the bus must have their terminators removed or disabled.
2.2.4.1 Internal SCSI Connections If you make only internal SCSI device connections to the host adapter, you must terminate the last internal device on the SCSI bus. You must disable the termination on all other devices. Termination on the host adapter is required in this case. Insert the plug-in HVD terminator into the external connector J3 on the host adapter. Figure 2.12 shows an example of how termination is determined for this SCSI bus configuration. Figure 2.
2.2.4.2 External SCSI Connections If you make only external SCSI device connections to the host adapter, you must terminate the last external device on the SCSI bus. You must disable the termination on all other devices. Termination on the host adapter is required in this case. Insert the plug-in HVD terminator into the internal connector J2 on the host adapter. Figure 2.13 shows you how to enable or disable termination for this SCSI bus configuration. Figure 2.
2.2.4.3 Internal and External SCSI Connections If you make internal and external SCSI device connections to the host adapter, you must terminate the last internal device and external device on the SCSI bus. You must disable the termination on all other devices. Termination on the host adapter is not required in this case. Save the plug-in HVD terminator so you can change the SCSI bus configuration in the future. Figure 2.14 shows you how to enable or disable termination for this SCSI bus configuration.
Figure 2.
2.2.5 Setting SCSI IDs Each SCSI device and the host adapter must have a separate SCSI ID, 0 through 15. SCSI ID 7 is the preset host adapter setting, giving it the highest priority on the SCSI bus. If you plan to boot your computer from a SCSI hard disk drive on the SCSI bus, that drive should have SCSI ID 0, or the lowest SCSI ID on the bus. The PCI Storage Device Management System SDMS 4.0 User’s Guide explains how to set your host adapter ID using the SCSI BIOS Configuration Utility.
Table 2.
2.3 Completing the Installation Before replacing the cover on your computer, review this installation procedure check list. This can save you effort later. Verify Installation Procedures Done Host adapter connection in PCI bus slot secure Internal SCSI bus connections secure (pin-1 continuity) External SCSI bus connections secure Proper SCSI bus termination established Unique SCSI IDs set and recorded for each device Step 1. Replace the cabinet cover on your computer. Step 2.
2-22 Installing the LSI8751D
Chapter 3 Technical Specifications This section discusses the physical environment associated with the LSI8751D. The LSI8751D mechanical drawing is shown in Figure 1.1. This section also includes these topics: • Section 1.1, “Physical Environment,” page 1-1 • Section 1.2, “Operational Environment,” page 1-3 3.1 Physical Environment This section discusses the physical, electrical, thermal, and safety characteristics of the LSI8751D. This board complies with electromagnetic standards set by the FCC. 3.
Figure 3.1 LSI8751D Mechanical Drawing 127.00 (REF) (5.00 (REF)) 82.55 (REF) (3.25 (REF)) J2 J4 J3 LSI53C875J J1 All dimensions are given in millimeters and (inches). 3.1.2 Electrical Characteristics The LSI8751D maximum power requirements, including SCSI TERMPWR, under normal operation, are shown in Table 1.1: Table 3.1 Maximum Power Requirements +5 V DC ±5% 1.5 A Over the operating range 5 °C to 55 °C +3.3 V DC ±0.3 V 130 mA Over the operating range 5 °C to 55 °C when operating in a 3.
The PCI PRSNT1/ and PRSNT2/ pins are set to indicate a 7.5 W maximum configuration. 3.1.3 Thermal, Atmospheric Characteristics The board operates in an environment defined by the following parameters: • Temperature range: 5 to 55 °C (dry bulb) • Relative humidity range: 5 to 90% noncondensing • Maximum dew point temperature: 32 °C 3.1.4 Electromagnetic Compliance The board minimizes electromagnetic emissions, susceptibility to radio frequency energy, and the effects of electromagnetic discharge.
Note: Table 3.2 The + 3.3 V pins are tied together and decoupled with high frequency bypass capacitors to ground. No current from these 3.3 V pins is used on the board. The PCI portion of the LSI53C875J chip is powered from the 3 V/5 V pins. PCI Connector JI (Top) Signal Name1 Pin Signal Name1 Pin Signal Name1 Pin Signal Name1 Pin -12 V 1 GND 17 C_BE2/ 33 GND 49 TCK 2 REQ/ 18 GND 34 KEYWAY 50 GND 3 3 V/5 V 19 IRDY/ 35 KEYWAY 51 TDO 4 AD31 20 +3.
Table 3.3 PCI Connector JI (Bottom) Signal Name1 Pin Signal Name1 Pin Signal Name1 Pin Signal Name1 Pin TRST/ 1 GNT/ 17 +3.3 V 33 AD09 49 +12V 2 GND 18 FRAME/ 34 KEYWAY 50 TMS 3 RESERVED 19 GND 35 KEYWAY 51 TDI 4 AD30 20 TRDY/ 36 C_BE0/ 52 +5 V 5 +3.3 V 21 GND 37 +3.3V 53 INTA/ 6 AD28 22 STOP/ 38 AD06 54 INTC/ 7 AD26 23 +3.
Table 3.
Appendix A Glossary of Terms and Abbreviations Active Termination The electrical connection required at each end of the SCSI bus, composed of active voltage regulation and a set of termination resistors. Ultra and Ultra2 SCSI require active termination. Address A specific location in memory, designated either numerically or by a symbolic name. Asynchronous Data Transfer One of the ways data is transferred over the SCSI bus. It is slower than synchronous data transfer. BIOS Basic Input/Output System.
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. CPU Central Processing Unit. The “brain” of the computer that performs the actual computations. The term Microprocessor Unit (MPU) is also used. DMA Direct Memory Access.
Fast SCSI A standard for SCSI data transfers. It allows a transfer rate of up to 10 Mbytes/s over an 8-bit SCSI bus and up to 20 Mbytes/s over a 16-bit SCSI bus. FCC Federal Communications Commission. 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.
LVD SCSI Low Voltage Differential. LVD is a robust design methodology that improves power consumption, data integrity, cable lengths and support for multiple devices, while providinga migration path for increased I/O performance. Mainboard A large circuit board that holds RAM, ROM, the microprocessor, custom integrated circuits, and other components that make a computer work. It also has expansion slots for host adapters and other expansion boards.
Peripheral Devices A piece of hardware (such as a video monitor, disk drive, printer, or CD-ROM) used with a computer and under the computer’s control. SCSI peripherals are controlled through a SCSI host adapter. Pin-1 Orientation The alignment of pin 1 on a SCSI cable connector and the pin-1 position on the SCSI connector into which it is inserted. External SCSI cables are always keyed to insure proper alignment, but internal SCSI ribbon cables sometimes are not keyed. PIO Programmed Input/Output.
SCSI Bus A host adapter and one or more SCSI peripherals connected by cables in a linear chain configuration. The host adapter may exist anywhere on the chain, allowing connection of both internal and external SCSI devices. A system may have more than one SCSI bus by using multiple host adapters. SCSI Device Any device that conforms to the SCSI standard and is attached to the SCSI bus by a SCSI cable. This includes SCSI host adapters and SCSI peripherals.
16-bit SCSI bus. STA (SCSI Trade Association) supports using the term “Ultra2 SCSI” over the term “Fast-40”. VCCI Voluntary Control Council for Interference. VDE Verband Deucher Elektroniker (Association of German Electrical Engineers). Virtual Memory Space on a hard disk that can be used as if it were RAM. Wide SCSI A SCSI-2 feature allowing 16-bit or 32-bit transfers on the SCSI bus. This dramatically increases the transfer rate over the standard 8-bit SCSI bus.
A-8 Glossary of Terms and Abbreviations
Index B P board characteristics 1-3 PCI connector J1 (bottom) 3-5 PCI connector J1 (top) 3-4 PCI interface 1-2, 3-3 peripheral device SCSI IDs 2-19 C chained connection 2-9, 2-13 completing the LSI8751D installation 2-21 connecting the SCSI peripherals 2-5 Q quick installation procedure 2-1 to 2-2 D R detailed installation procedure 2-2 to 2-12 duplication of SCSI IDs 2-19 ribbon cable 2-5 E S edge connector 2-4 electrical characteristics 3-2 electromagnetic compliance 3-3 external SCSI bus con
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