LSI Network Card 8751D User Manual

USER’S  
GUIDE  
LSI8751D  
PCI to SCSI  
Host Adapter  
Version 3.0  
Au g u s t 2 0 0 1  
®
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This document contains proprietary information of LSI Logic Corporation. The  
information contained herein is not to be used by or disclosed to third parties  
without the express written permission of an officer of LSI Logic Corporation.  
LSI Logic products are not intended for use in life-support appliances, devices,  
or systems. Use of any LSI Logic product in such applications without written  
consent of the appropriate LSI Logic officer is prohibited.  
Document DB15-000102-03, Fourth Edition (August 2001)  
This document describes LSI Logic Corporation’s LSI8751D PCI to SCSI Host  
Adapter and will remain the official reference source for all revisions/releases of  
this product until rescinded by an update.  
LSI Logic Corporation reserves the right to make changes to any products herein  
at any time without notice. LSI Logic does not assume any responsibility or  
liability arising out of the application or use of any product described herein,  
except as expressly agreed to in writing by 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.  
Copyright © 2001 by LSI Logic Corporation. All rights reserved.  
TRADEMARK ACKNOWLEDGMENT  
The LSI Logic logo design and SDMS are trademarks or registered trademarks  
of LSI Logic Corporation. All other brand and product names may be trademarks  
of their respective companies.  
MH  
For a current list of our distributors, sales offices, and design resource  
centers, view our web page located at  
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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. The hours of  
operation are from 7:30 a.m. to 4:30 p.m. (MST), Monday through Friday.  
Before calling, please have the following information:  
Which LSI Logic host adapter are you installing?  
What system are you installing into?  
What SCSI devices are you connecting to the bus?  
How is your system configured?  
It is also helpful if you are at your system when you call.  
Organization  
This document has the following chapters and appendixes:  
Chapter 1, Describing the LSI8751D, defines the interfaces and  
characteristics of the LSI8751D.  
Chapter 2, Installing the LSI8751D, provides both quick and  
detailed installation instructions.  
Preface  
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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  
2.0  
2.1  
3.0  
6/95  
3/99  
11/00  
8/01  
Final version.  
Document converted to LSI format.  
All product names changed from SYM to LSI.  
Updated Table 3.4 SCSI Connector J2 and J3; Removed the chapter about  
the SCSI BIOS Configuration Utility; Moved Appendix A to Chapter 3. Other  
minor updates made to installation instructions in Chapter 2.  
vi  
Preface  
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Contents  
Chapter 1  
Describing the LSI8751D  
1.1  
1.2  
General Description  
Features  
1-2  
1.2.1  
1.2.2  
1.2.3  
1.2.4  
SCSI Interface  
Board Characteristics  
Ultra SCSI  
Chapter 2  
Installing the LSI8751D  
2.1  
2.2  
Quick Installation Procedure  
Detailed Installation Procedure  
2.2.1  
2.2.2  
2.2.3  
2.2.4  
2.2.5  
Before You Start  
Inserting the Host Adapter  
SCSI Bus Termination  
Setting SCSI IDs  
2-3  
2.3  
Completing the Installation  
Chapter 3  
Technical Specifications  
3.1  
Physical Environment  
3-3  
3-3  
3-3  
3-5  
3-6  
3.1.1  
3.1.2  
3.1.3  
3.1.4  
3.1.5  
Physical Characteristics  
Electrical Characteristics  
Electromagnetic Compliance  
Safety Characteristics  
3.2  
Operational Environment  
3.2.1  
3.2.2  
3.2.3  
The PCI Interface  
The SCSI Interface  
The LED Interface  
Contents  
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Appendix A  
Glossary of Terms and Abbreviations  
Customer Feedback  
ii  
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Figures  
2.1  
2.2  
2.3  
2.4  
2.5  
Hardware Connections for the LSI8751D  
Inserting the Host Adapter  
2-3  
SCSI Cables  
Connection  
2.6  
2.7  
2.8  
2.9  
Connecting Additional Internal SCSI Devices  
Multiple Internal SCSI Devices Chained Together  
SCSI LED Connector  
2-13  
2-15  
2-16  
2-18  
3-2  
External Cable to Host Adapter  
2.10 External Cable to External SCSI Device  
2.11 Multiple External SCSI Devices Chained Together  
2.12 Internal SCSI Device Termination  
2.13 External SCSI Device Termination  
2.14 Internal and External SCSI Device Termination  
3.1  
LSI8751D Mechanical Drawing  
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Tables  
2.1  
2.2  
3.1  
3.2  
3.3  
3.4  
3.5  
SCSI Bus Widths and Speeds  
SCSI ID Record  
3-2  
Maximum Power Requirements  
PCI Connector JI (Top)  
PCI Connector JI (Bottom)  
SCSI Connectors J2 and J3  
LED Connector J4  
3-4  
3-5  
3-6  
3-6  
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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.  
The LSI8751D is a 16-bit, High Voltage Differential (HVD), Ultra SCSI  
solution for your computer, using only one PCI slot. This board can  
support both legacy Fast SCSI devices and the newest Ultra SCSI  
devices. It is also backward compatible with the existing LSI8251D host  
adapter.  
The Storage Device Management System (SDMS™) software operates  
the board, but the design of the board does not prevent other software  
from being written and used with it.  
This guide and the PCI Storage Device Management System SDMS 4.0  
User’s Guide contain product information and installation instructions.  
This information helps you gain the full benefits of the LSI8751D for your  
computer system.  
LSI8751D PCI to SCSI Host Adapter  
1-1  
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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. The LSI53C875J connects  
directly to the PCI bus and generates timing protocol that complies with  
the PCI specification.  
The PCI interface on the LSI8751D supports these features:  
Full 32-bit DMA bus master  
Zero wait-state bus master data bursts  
Universal 5 V or 3.3 V PCI bus voltage  
PCI Local Bus Specification, Revision 2.1 compliance  
1.2.2 SCSI Interface  
The SCSI functionality for the LSI8751D is contained within the LSI53875  
controller chip. The LSI53C875 connects directly to the SCSI bus and  
generates timing and protocol in compliance with the SCSI standard.  
The SCSI interface on the LSI8751D operates as a 16-bit, synchronous  
or asynchronous, HVD bus, and supports Ultra SCSI protocols and 16-  
bit arbitration. The LSI8751D provides HVD SCSI termination as a  
pluggable terminator. This terminator plugs into either the internal or  
external 68-pin high density connector (J2 or J3).  
The SCSI interface for this board supports these features:  
16-bit HVD  
External plug-in termination supplied with board  
1-2  
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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 X82.552 mm)  
Universal 32-bit card edge connector  
1.2.4 Ultra SCSI  
The LSI8751D has full support for Ultra SCSI and simultaneously  
supports Fast SCSI. Ultra SCSI is an extension of the SCSI-3 family of  
standards that expands the bandwidth of the SCSI bus, allowing faster  
synchronous data transfers. Special SCSI cables are specified for  
operation with Ultra SCSI devices, and you must consider the total  
number of devices and the length of your SCSI bus when setting up your  
system. See Section 1.2.3, “Connecting the SCSI Peripherals,page 1-5  
for a more detailed explanation of SCSI bus connections.  
Features  
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1-4  
Describing the LSI8751D  
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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. If you prefer more detailed guidance for installing the  
LSI8751D, please follow the instructions in Section 2.2, “Detailed  
Installation Procedure.”  
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, then  
remove the cabinet cover on your computer to access the PCI  
slots.  
Note:  
The use of a static ground strap is recommended.  
Step 2. Remove the LSI8751D from the packing and check that it is not  
damaged.  
Step 3. Turn off and unplug your system.  
Step 4. Open your PC cabinet.  
Step 5. Locate the slots for installing a PCI plug-in board.  
Step 6. Insert the LSI8751D board into the selected PCI slot.  
LSI8751D PCI to SCSI Host Adapter  
2-1  
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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.  
Refer to the PCI Storage Device Management System SDMS 4.0 User’s  
Guide (or the guide for the software you will use) to load the driver  
software for your particular operating system. Additionally, this guide  
contains documentation about the SCSI BIOS Configuration Utility, which  
provides a means to change system configuration.  
2.2 Detailed Installation Procedure  
This section provides step-by-step instructions for installing the  
LSI8751D and connecting it to your SCSI peripherals. If you are  
experienced in these tasks, you may prefer to use the instructions in the  
preceding Section 2.1, “Quick Installation Procedure.”  
2.2.1 Before You Start  
Before starting, read through the steps defined within the detailed  
installation procedure. If you are not confident that you can perform the  
tasks as described in this section, LSI Logic suggests getting assistance.  
The SCSI host adapter acts on your computer’s behalf as the host to  
your suite of SCSI peripherals. Each chain of SCSI peripheral devices  
and their host adapter work together and are referred to as a SCSI bus.  
Each channel on your SCSI host adapter can act as host for up to  
15 peripheral devices, not including the adapter itself.  
2-2  
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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 2.1 Hardware Connections for the LSI8751D  
Plug-in HVD Terminator  
(Fits J2 or J3)  
LED  
Connector  
J4  
68-Pin High Density  
SCSI Interface  
J2  
68-Pin External  
SCSI Interface  
J3  
J1 to PCI  
Bus Connector  
on Mainboard  
Step 2. Switch off and unplug power cords for all components in your  
system.  
Step 3. Remove the cabinet cover on your computer to access the PCI  
slots.  
Caution:  
Ground yourself by touching a metal surface before  
removing the cabinet cover. Static charges on your body  
can damage electronic components. Handle plug-in boards  
Detailed Installation Procedure  
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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. Carefully insert the edge connector J1 (see Figure 2.1) of the  
host adapter into the PCI slot. Make sure the edge connector  
is properly engaged before pressing the board into place as  
shown in Figure 2.2. You may notice that the components on a  
PCI host adapter face the opposite way from those on other  
non-PCI adapter boards you have in your system. This is  
correct, and the board is keyed to go in only one way.  
Figure 2.2 Inserting the Host Adapter  
Bracket Screw  
2-4  
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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. Sometimes  
the connectors on this cable are keyed to ensure proper pin-1  
connection.  
All external SCSI bus connections to the LSI8751D are made with  
shielded, 68-conductor cables (see Figure 2.3). The connectors on this  
cable are always keyed to ensure proper pin-1 connection.  
Table 2.1 lists the SCSI bus widths and speeds as established by the  
SCSI Trade Association (STA).  
Table 2.1  
SCSI Bus Widths and Speeds  
SCSI Bus Speed  
Maximum Data Rate,  
Mbytes/s  
SCSI Bus  
Width, Bits  
STA Terms  
SCSI-1  
8
8
5
Fast SCSI  
10  
20  
20  
40  
40  
80  
Fast Wide SCSI  
Ultra SCSI  
16  
8
Wide Ultra SCSI  
Ultra2 SCSI  
Wide Ultra2 SCSI  
16  
8
16  
Important: Use only cables designed and specified for operation with  
Ultra SCSI devices to make connections to the LSI8751D.  
See Figure 2.3 for an example of the required cables.  
Detailed Installation Procedure  
2-5  
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Figure 2.3 SCSI Cables  
SCSI Cable for Internal Connections  
SCSI Cable for External Connections  
2-6  
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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 2.4 Internal SCSI Ribbon Cable to Host Adapter  
Connection  
Detailed Installation Procedure  
2-7  
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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 2.6 Connecting Additional Internal SCSI Devices  
2-8  
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Figure 2.7 shows an example of this type of chained  
connection. Make sure to match pin 1 on all connections.  
Figure 2.7 Multiple Internal SCSI Devices Chained Together  
Detailed Installation Procedure  
2-9  
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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. In this case, place the  
connector on one end or the other of J4. If the LED does not light  
during SCSI bus activity from this host adapter, you may have to  
rotate the LED cable 180° on J4.  
2-10  
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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 68-  
pin 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 2.9 External Cable to Host Adapter  
Detailed Installation Procedure  
2-11  
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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 2.10 External Cable to External SCSI Device  
Terminator  
External  
Connector  
2-12  
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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 2.11 Multiple External SCSI Devices Chained Together  
Termination Enabled  
Termination Disabled  
Detailed Installation Procedure  
2-13  
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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. Remember that the LSI8751D is also  
on the SCSI bus; if you position the host adapter at the end of the SCSI  
bus, you must place the supplied HVD terminator on the unused  
connector (J2 or J3).  
The peripheral device terminators are usually set with jumpers, resistor  
modules, or a switch on the peripheral. Refer to the peripheral  
manufacturer’s instructions and to the user’s manual for your computer  
for information on how to identify the terminator setting of each device  
and how to change it.  
The LSI8751D automatically covers SCSI bus termination for three  
different bus configurations, depending on the use of the connectors J2  
and J3 on the LSI8751D (see Figure 2.1). The three bus configurations  
are  
only for internal SCSI connections to connector J2  
only for external SCSI connections to connector J3  
for SCSI connections to both J2 and J3 connectors  
Termination on the LSI8751D for these three different bus configurations  
is discussed in the following sections.  
2-14  
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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 2.12 Internal SCSI Device Termination  
Last Device  
on Chain –  
Termination  
Enabled  
Does Not  
End Chain –  
Termination  
Disabled  
Last Device on Chain –  
Host Adapter Plug-in  
HVD Terminator  
Required on External  
Connector J3  
Detailed Installation Procedure  
2-15  
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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 2.13 External SCSI Device Termination  
Last Device  
on Chain –  
Termination  
Enabled  
Does Not  
End Chain –  
Termination  
Disabled  
Last Device  
on Chain –  
Host Adapter  
Plug-in  
HVD  
Terminator  
Required  
on Internal  
Connector J2  
2-16  
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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.  
Detailed Installation Procedure  
2-17  
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Figure 2.14 Internal and External SCSI Device Termination  
Last Device  
on Chain –  
Termination  
Enabled  
Host Adapter  
Termination  
Not Required  
Does Not  
End Chain –  
Termination  
Disabled  
Last Device  
on Chain –  
Termination  
Enabled  
2-18  
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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.  
The peripheral device SCSI IDs are usually set with jumpers or with a  
switch on the peripheral. Refer to the peripheral manufacturer’s  
instructions and to the user’s manual for your computer to determine the  
ID of each device and how to change it. No duplication of SCSI IDs is  
allowed on a SCSI bus. Follow these steps for setting SCSI IDs:  
Step 1. Determine the SCSI ID of each device on the SCSI bus. Note  
any duplications.  
Step 2. Make any necessary changes to the SCSI IDs and record the  
IDs for future reference. Correct any duplications at this time.  
Table 2.2 is provided as a place to keep this record.  
Detailed Installation Procedure  
2-19  
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Table 2.2  
SCSI ID Record  
SCSI ID  
SCSI Device  
15  
14  
13  
11  
10  
9
8
7
LSI8751D (default)  
6
5
4
3
2
1
0
2-20  
Installing the LSI8751D  
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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. Plug in all power cords, and switch on power to all devices and  
your computer.  
Step 3. Wait for your computer to boot up.  
Step 4. Refer to the PCI Storage Device Management System SDMS  
4.0 User’s Guide (or the guide for the software you plan to use)  
to load the driver software for your particular operating system.  
To change the configuration of your host adapter, if needed,  
refer to this same guide.  
Completing the Installation  
2-21  
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2-22  
Installing the LSI8751D  
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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.  
3.1.1 Physical Characteristics  
The dimensions of the LSI8751D are 5.00 x 3.25 inches (127 x 82.552  
mm). PCI connection is made through the edge connector J1. Internal  
SCSI connection is made through the 68-pin high density connector J2.  
External SCSI connection is made through the 68-pin high density  
connector J3. The J3 connector extends through the standard bracket,  
which is attached to the face of the connector outside of the cabinet  
where the LSI8751D is installed. The bracket is a standard type with a  
cutout to accommodate connector J3. The J4 connector is for the Busy  
LED connection using a 4-pin, one-row right-angle header. The  
component height on the top and bottom of the board follows the PCI  
specification.  
LSI8751D PCI to SCSI Host Adapter  
3-1  
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Figure 3.1 LSI8751D Mechanical Drawing  
127.00 (REF) (5.00 (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 3.3 V PCI slot  
Under abnormal conditions, such as a short on SCSI TERMPWR, +5 V  
current may be higher. At temperatures of at least 25 °C, a current of  
4 A is sustained no longer than 30 seconds before the self-resetting  
TERMPWR short circuit protection device opens.  
3-2  
Technical Specifications  
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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. The  
board meets the requirements of FCC and CISPR Class B limits and is  
marked with the FCC Class B ID: B8J8251AD.  
3.1.5 Safety Characteristics  
The bare board meets or exceeds the requirements of UL flammability  
rating 94 V0. The bare board is also marked with the supplier’s name or  
trademark, type, and UL flammability rating. Because this board is  
installed in a PCI bus slot, all voltages are below the SELV 42.4 V limit.  
3.2 Operational Environment  
The LSI8751D is designed for PCI computer systems with a standard  
bracket. The SDMS software operates the board, but the design of the  
board does not prevent the use of other software.  
3.2.1 The PCI Interface  
The PCI interface operates as a 32-bit DMA bus master. The connection  
is made through the edge connector J1, which provides connections on  
both the top and bottom of the board. The signal definitions and pin  
numbers conform to the PCI Local Bus Specification Revision 2.1  
standard. The signal assignments are shown in Table 1.2 and Table 1.3.  
Operational Environment  
3-3  
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Note:  
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.  
Table 3.2  
PCI Connector JI (Top)  
1
1
1
1
Signal Name  
Pin  
Signal Name  
Pin  
Signal Name  
Pin  
Signal Name  
Pin  
-12 V  
TCK  
1
2
GND  
REQ/  
3 V/5 V  
AD31  
AD29  
GND  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
C_BE2/  
GND  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
GND  
KEYWAY  
KEYWAY  
AD08  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
GND  
3
IRDY/  
TDO  
4
+3.3 V  
DEVSEL/  
GND  
+5 V  
5
AD07  
+5 V  
6
+3.3 V  
AD05  
INTB/  
7
AD27  
AD25  
+3.3 V  
C_BE3/  
AD23  
GND  
LOCK/  
PERR/  
+3.3 V  
SERR/  
+3.3 V  
C_BE1/  
AD14  
INTD/  
8
AD03  
GND (PRSNT1/)  
RESERVED  
GND (PRSNT2/)  
KEYWAY  
KEYWAY  
RESERVED  
GND  
9
GND  
10  
11  
12  
13  
14  
15  
16  
AD01  
3 V/5 V  
ACK64/  
+5 V  
AD21  
AD19  
+3.3 V  
AD17  
GND  
+5 V  
AD12  
CLK  
AD10  
1. Shaded signals are not connected.  
3-4  
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Table 3.3  
PCI Connector JI (Bottom)  
1
1
1
1
Signal Name  
Pin  
Signal Name  
Pin  
Signal Name  
Pin  
Signal Name  
Pin  
TRST/  
+12V  
1
2
GNT/  
GND  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
+3.3 V  
FRAME/  
GND  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
AD09  
KEYWAY  
KEYWAY  
C_BE0/  
+3.3V  
49  
50  
51  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
TMS  
3
RESERVED  
AD30  
TDI  
4
TRDY/  
GND  
+5 V  
5
+3.3 V  
AD28  
INTA/  
6
STOP/  
+3.3 V  
SDONE  
SBO/  
AD06  
INTC/  
7
AD26  
AD04  
+5 V  
8
GND  
GND  
RESERVED  
3 V/5 V  
RESERVED  
KEYWAY  
KEYWAY  
RESERVED  
RST/  
9
AD24  
AD02  
10  
11  
12  
13  
14  
15  
16  
IDSEL  
+3.3 V  
AD22  
GND  
AD00  
PAR  
3 V/5 V  
REQ64/  
+5 V  
AD15  
+3.3 V  
AD13  
AD11  
GND  
AD20  
GND  
+5 V  
AD18  
3 V/5 V  
AD16  
1. Shaded signals are not connected.  
3.2.2 The SCSI Interface  
The SCSI interface operates as 16-bit, synchronous or asynchronous,  
High Voltage Differential (HVD) bus, and supports SCSI-3 protocols and  
16-bit arbitration. The signal definitions conform to the SCSI-2 differential  
standard. The interface is made through connectors J2 and J3.  
Connector J2 is a 68-pin, high density, right-angle receptacle used for  
internal connections. Connector J3 is a 68-pin, high density, right-angle  
receptacle that protrudes through the back panel bracket. SCSI  
termination is provided through a HVD plug-in terminator. SCSI  
termination power is also supplied by the board. Table Table 1.4 shows  
the signal assignments for J2 and J3 SCSI HVD connectors.  
Operational Environment  
3-5  
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Table 3.4  
SCSI Connectors J2 and J3  
Signal Name  
Pin  
Signal Name  
Pin  
Signal Name  
Pin  
Signal Name  
Pin  
+DB(12)  
+DB(13)  
+DB(14)  
+DB(15)  
+DB(P1)  
GND  
1
2
TERMPWR  
RESERVED  
+ATN  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
DB(12)  
DB(13)  
DB(14)  
DB(15)  
DB(P1)  
GND  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
49  
50  
51  
TERMPWR  
RESERVED  
-ATN  
52  
53  
54  
55  
56  
57  
58  
59  
60  
61  
62  
63  
64  
65  
66  
67  
68  
3
4
GND  
GND  
5
+BSY  
BSY  
6
+ACK  
ACK  
+DB(0)  
7
+RST  
DB(0)  
DB(1)  
DB(2)  
DB(3)  
DB(4)  
DB(5)  
DB(6)  
DB(7)  
DB(P)  
GND  
RST  
+DB(1)  
8
+MSG  
+SEL  
MSG  
SEL  
+DB(2)  
9
+DB(3)  
10  
11  
12  
13  
14  
15  
16  
17  
+C/D  
C/D  
+DB(4)  
+REQ  
REQ  
+DB(5)  
+I/O  
I/O  
+DB(6)  
GND  
GND  
+DB(7)  
+DB(8)  
+DB(9)  
+DB(10)  
+DB(11)  
DB(8)  
DB(9)  
DB(10)  
DB(11)  
+DB(P)  
DIFFSENS  
TERMPWR  
TERMPWR  
3.2.3 The LED Interface  
The LED interface on the LSI8751D is a four-wire arrangement that  
allows the user to connect an LED harness to the board. The  
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 an LED is attached. The connector on the LSI8751D is J4.  
Table 3.5  
LED Connector J4  
Signal Name  
Pin  
LED+  
LED−  
LED−  
LED+  
1
2
3
4
3-6  
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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. Software that provides basic read/write  
capability. Usually kept as firmware (ROM based). The system BIOS on  
the mainboard of a computer is used to boot and control the system. The  
SCSI BIOS on your host adapter acts as an extension of the system  
BIOS.  
Bit  
A binary digit. The smallest unit of information a computer uses. The  
value of a bit (0 or 1) represents a two-way choice, such as on or off,  
true or false, and so on.  
Bus  
A collection of unbroken signal lines across which information is  
transmitted from one part of a computer system to another. Connections  
to the bus are made by way of taps on the lines.  
Bus Mastering  
A high-performance way to transfer data. The host adapter controls the  
transfer of data directly to and from system memory without interrupting  
the computer’s microprocessor. This is the fastest way for multitasking  
operating systems to transfer data.  
Byte  
A unit of information consisting of eight bits.  
CISPR  
A special international committee on radio interference (Committee,  
International and Special, for Protection in Radio).  
LSI8751D PCI to SCSI Host Adapter  
A-1  
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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  
DMA  
Central Processing Unit. The “brain” of the computer that performs the  
actual computations. The term Microprocessor Unit (MPU) is also used.  
Direct Memory Access.  
DMA Bus  
Master  
A feature that allows a peripheral to control the flow of data to and from  
system memory by blocks, as opposed to PIO (Programmed I/O) where  
the processor is in control and the flow is by byte.  
Device Driver  
A program that allows a microprocessor (through the operating system)  
to direct the operation of a peripheral device.  
Differential SCSI A hardware configuration for connecting SCSI devices. It uses a pair of  
lines for each signal transfer (as opposed to single-ended SCSI which  
references each SCSI signal to a common ground). Two types of  
differential signals in the industry are High Voltage Differential (HVD) and  
Low Voltage Differential (LVD).  
Dword  
A double word is a group of four consecutive bytes or characters that are  
stored, addressed, transmitted, and operated on as a unit. The lower two  
address bits of the least significant byte must equal zero in order to be  
Dword aligned.  
EEPROM  
EISA  
Electronically Erasable Programmable Read Only Memory. A memory  
chip typically used to store configuration information. See NVRAM.  
Extended Industry Standard Architecture. An extension of the 16-bit ISA  
bus standard. It allows devices to perform 32-bit data transfers.  
External SCSI  
Device  
A SCSI device installed outside the computer cabinet. These devices are  
connected in a continuous chain using specific types of shielded cables.  
Fast-20  
The SCSI Trade Association (STA) supports the use of “Ultra SCSI” over  
the term “Fast-20”. Please see Ultra SCSI.  
Fast-40  
The SCSI trade association (STA) supports the use of “Ultra2 SCSI” over  
the term “Fast-40”. Please see Ultra2 SCSI.  
A-2  
Glossary of Terms and Abbreviations  
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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  
Host  
A disk made of metal and permanently sealed into a drive cartridge. A  
hard disk can store very large amounts of information.  
The computer system in which a SCSI host adapter is installed. It uses  
the SCSI host adapter to transfer information to and from devices  
attached to the SCSI bus.  
Host Adapter  
A circuit board or integrated circuit that provides a SCSI bus connection  
to the computer system.  
Internal SCSI  
Device  
A SCSI device installed inside the computer cabinet. These devices are  
connected in a continuous chain using an unshielded ribbon cable.  
IRQ  
Interrupt Request Channel. A path through which a device can get the  
immediate attention of the computer’s CPU. The PCI bus assigns an IRQ  
path for each SCSI host adapter.  
ISA  
Industry Standard Architecture. A type of computer bus used in most  
PCs. It allows devices to send and receive data up to 16-bits at a time.  
Kbyte  
Kilobyte. A measure of computer storage equal to 1024 bytes.  
Local Bus  
A way to connect peripherals directly to computer memory. It bypasses  
the slower ISA and EISA buses. PCI is a local bus standard.  
Logical Unit  
LUN  
A subdivision, either logical or physical, of a SCSI device (actually the  
place for the device on the SCSI bus). Most devices have only one  
logical unit, but up to eight are allowed for each of the eight possible  
devices on a SCSI bus.  
Logical Unit Number. An identifier, zero to seven, for a logical unit.  
Glossary of Terms and Abbreviations  
A-3  
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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.  
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.  
Multitasking  
Multithreading  
NVRAM  
The executing of more than one command at the same time. This allows  
programs to operate in parallel.  
The simultaneous accessing of data by more than one SCSI device. This  
increases the data throughput.  
NonVolatile Random Access Memory. Actually an EEPROM  
(Electronically Erasable Read Only Memory chip) used to store  
configuration information. See EEPROM.  
Operating  
System  
A program that organizes the internal activities of the computer and its  
peripheral devices. An operating system performs basic tasks such as  
moving data to and from devices, and managing information in memory.  
It also provides the user interface.  
Parity Checking A way to verify the accuracy of data transmitted over the SCSI bus. The  
parity bit in the transfer is used to make the sum of all the 1 bits either  
odd or even (for odd or even parity). If the sum is not correct, the  
information may be retransmitted or an error message may appear.  
Passive  
The electrical connection required at each end of the SCSI bus,  
Termination  
composed of a set of resistors. It improves the integrity of bus signals.  
PCI  
Peripheral Component Interconnect. A local bus specification that allows  
connection of peripherals directly to computer memory. It bypasses the  
slower ISA and EISA buses.  
A-4  
Glossary of Terms and Abbreviations  
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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. A way the CPU can transfer data to and from  
memory using the computer’s I/O ports. PIO is usually faster than DMA,  
but requires CPU time.  
Port Address  
Also Port Number. The address through which commands are sent to a  
host adapter board. This address is assigned by the PCI bus.  
Port Number  
Queue Tags  
See Port Address.  
A way to keep track of multiple commands that allow for increased  
throughput on the SCSI bus.  
RAM  
Random Access Memory. The computer’s primary working memory in  
which program instructions and data are stored and are accessible to the  
CPU. Information can be written to and read from RAM. The contents of  
RAM are lost when the computer is turned off.  
RISC Core  
ROM  
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. The contents of ROM are not erased when the computer is  
turned off.  
SCAM  
SCSI  
SCSI Configured AutoMatically. A method to automatically allocate SCSI  
IDs using software when SCAM compliant SCSI devices are attached.  
Small Computer System Interface. A specification for a high performance  
peripheral bus and command set. The original standard is referred to as  
SCSI-1.  
SCSI-2  
SCSI-3  
The current SCSI specification which adds features to the original  
SCSI-1 standard.  
The SCSI specification which adds features to the SCSI-2 standard.  
Glossary of Terms and Abbreviations  
A-5  
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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  
SCSI ID  
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.  
A way to uniquely identify each SCSI device on the SCSI bus. Each  
SCSI bus has eight available SCSI IDs numbered 0 through 7 (or 0  
through 15 for Wide SCSI). The host adapter usually gets the highest ID,  
(7 or 15) giving it priority to control the bus.  
SDMS  
Storage Device Management System. An LSI Logic software product that  
manages SCSI system I/O.  
Single-Ended  
SCSI  
A hardware specification for connecting SCSI devices. It references each  
SCSI signal to a common ground. This is the most common method (as  
opposed to differential SCSI which uses a separate ground for each  
signal).  
STA  
SCSI Trade Association. A group of companies that cooperate to  
promote SCSI parallel interface technology as a viable mainstream I/O  
interconnect for commercial computing.  
Synchronous  
Data Transfer  
One of the ways data is transferred over the SCSI bus. Transfers are  
clocked with fixed-frequency pulses. This is faster than asynchronous  
data transfer. Synchronous data transfers are negotiated between the  
SCSI host adapter and each SCSI device.  
System BIOS  
Ultra SCSI  
Controls the low level POST (Power-On Self-Test), and basic operation  
of the CPU and computer system.  
A standard for SCSI data transfers. It allows a transfer rate of up to  
20 Mbytes/s over a 8-bit SCSI bus and up to 40 Mbytes/s over a 16-bit  
SCSI bus. STA (SCSI Trade Association) supports using the term “Ultra  
SCSI” over the older term “Fast-20”.  
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  
A-6  
Glossary of Terms and Abbreviations  
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16-bit SCSI bus. STA (SCSI Trade Association) supports using the term  
“Ultra2 SCSI” over the term “Fast-40”.  
VCCI  
VDE  
Voluntary Control Council for Interference.  
Verband Deucher Elektroniker (Association of German Electrical  
Engineers).  
Virtual Memory  
Wide SCSI  
Space on a hard disk that can be used as if it were RAM.  
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.  
Wide Ultra SCSI The STA term for a SCSI bus width of 16 bits, with the SCSI bus speed  
maximum data rate of 40 Mbytes/s.  
Wide Ultra2  
SCSI  
The STA term for a SCSI bus width of 16 bits, with the SCSI bus speed  
maximum data rate of 80 Mbytes/s.  
Word  
A 2-byte (or 16-bit) unit of information.  
Glossary of Terms and Abbreviations  
A-7  
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A-8  
Glossary of Terms and Abbreviations  
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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  
C
peripheral device SCSI IDs 2-19  
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
edge connector 2-4  
safety characteristics 3-3  
SCSI bus connections 2-5  
SCSI bus termination 2-14  
SCSI connector J3 3-5  
electrical characteristics 3-2  
electromagnetic compliance 3-3  
external SCSI bus connections 2-11  
SCSI ID record table 2-20  
SCSI IDs 2-19  
F
SCSI interface 1-2, 3-5  
SCSI peripherals 2-5  
features 1-2  
front panel LED 2-10  
setting SCSI IDs 2-19  
storage device management system (SDMS) 1-1  
I
inserting the host adapter 2-3  
installation procedure 2-2  
termination  
SCSI bus 2-14 to 2-18  
thermal, atmospheric characteristics 3-3  
installation procedure check list 2-21  
internal SCSI bus connections 2-7  
L
Ultra SCSI 1-3  
LED connector J4 3-6  
LED interface 3-6  
LSI8751D host adapter  
board characteristics 1-3  
features 1-2  
installing 2-2 to 2-21  
termination 1-2  
Ultra SCSI 1-3  
O
operational environment 3-3  
LSI8751D PCI to SCSI Host Adapter  
IX-1  
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IX-2  
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