LSI Symbios SYM22801 User manual

®
Symbios™SYM22801
Dual Channel PCI to Ultra
SCSI Host Adapter
S14017
User’s Guide
Version 2.0

Federal Communications Commission (FCC) Declaration of Conformity

iii
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.
Document DB15-00106-00, Second Edition (March 1999). This document
describes Version 2.0 of LSI Logic Corporation’s Symbios™SYM22801 Dual
Channel PCI to Ultra SCSI Host Adapter and will remain the official reference
source for all revisions/releases of this product until rescinded by an update.
To receive product literature, call us at 1.800.574.4286 (U.S. and Canada);
+32.11.300.531 (Europe); 408.433.7700 (outside U.S., Canada, and Europe)
and ask for Department JDS; or visit us at http://www.lsilogic.com.
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 © 1999 by LSI Logic Corporation. All rights reserved.
TRADEMARK ACKNOWLEDGMENT
The LSI Logic logo design and TolerANT are registered trademarks and Symbios,
SDMS and LVDlink are trademarks of LSI Logic Corporation. All other brands and
product names may be trademarks of their respective companies.
The product in this manual is not intended for use in life-support appliances,
devices, or systems. Use of this product in such applications without the written
consent of the appropriate LSI Logic Corporation officer is prohibited.

iv

Contents v
Contents
Chapter 1 Using the SYM22801 Host Adapter
1.1 General Description 1-1
1.2 Features 1-2
1.2.1 PCI Interface 1-2
1.2.2 SCSI Interface 1-2
1.2.3 Board Characteristics 1-2
1.3 Interface Descriptions 1-3
1.3.1 The PCI Interface 1-3
1.3.2 The SCSI Interface 1-3
1.3.3 Ultra SCSI 1-4
Chapter 2 Installing the SYM22801 Host Adapter
2.1 Quick Installation Procedure 2-1
2.2 Detailed Installation Procedure 2-3
2.2.1 Before You Start 2-3
2.2.2 Inserting the Host Adapter 2-4
2.2.3 Connecting the SCSI Peripherals 2-6
2.2.4 Making Internal SCSI Bus Connections 2-8
2.2.5 Making External SCSI Bus Connections 2-15
2.3 SCSI Bus Termination 2-18
2.3.1 Internal SCSI Connections 2-19
2.3.2 External SCSI Connections 2-20
2.3.3 Internal and External SCSI Connections 2-21
2.3.4 Internal SCSI Connections for Both Internal
Connectors 2-22
2.3.5 Setting SCSI IDs 2-25
2.4 Setting Interrupts 2-27
2.5 Completing Your Installation 2-28

vi Contents
Chapter 3 Configuring the Host Adapter
3.1 When to Configure the SYM22801 Host Adapter 3-1
3.2 Starting the SCSI BIOS Configuration Utility 3-2
3.2.1 Configuration Utility Main Menu 3-3
3.2.2 Utilities Menu 3-6
3.2.3 Device Selections Menu 3-10
3.3 Exiting the SCSI BIOS Configuration Utility 3-13
Appendix A Technical Specifications
A.1 Physical Environment A-1
A.1.1 Physical Characteristics A-1
A.2 Electrical Characteristics A-2
A.2.1 Thermal, Atmospheric Characteristics A-3
A.2.2 Electromagnetic Compliance A-3
A.2.3 Safety Characteristics A-3
A.3 Operational Environment A-3
A.3.1 The PCI Interface A-3
A.3.2 The SCSI Interface A-6
A.3.3 The LED Interface A-9
Appendix B Glossary of Terms and Abbreviations
Index
Customer Feedback
Figures 2.1 Hardware Connections for the SYM22801 Host Adapter 2-5
2.2 Inserting the Host Adapter 2-6
2.3 SCSI Cables 2-7
2.4 Internal Wide SCSI Ribbon Cable to Host Adapter
Connection 2-9
2.5 Internal SCSI Ribbon Cable to Host Adapter Connection 2-10
2.6 Internal SCSI Ribbon Cable to Internal SCSI Device
Connection 2-11

Contents vii
2.7 Connecting Additional Internal SCSI Devices 2-12
2.8 Multiple Internal SCSI Devices Chained Together 2-13
2.9 Using Both Internal Connectors on a Channel 2-14
2.10 SCSI LED Connectors 2-15
2.11 External Cable to Host Adapter 2-16
2.12 External Cable to External SCSI Device 2-17
2.13 Multiple External SCSI Devices Chained Together 2-18
2.14 Internal SCSI Device Termination 2-20
2.15 External SCSI Device Termination 2-21
2.16 Internal and External SCSI Device Termination 2-22
2.17 Internal and Internal SCSI Device Termination 2-23
2.18 Termination Override Switch Settings for U1 and U2 2-25
A.1 SYM22801 Mechanical Drawing A-2
Tables 2.1 SCSI ID Record 2-26
2.2 Setting Interrupts 2-27
3.1 Global Default Settings 3-1
3.2 Device Default Settings 3-2
A.1 PCI Connector J1 (Front) A-4
A.2 PCI Connector J1 (Back) A-5
A.3 SCSI Connectors J2/J6 and J3/J7 A-7
A.4 SCSI Connectors J4/J8 A-8
A.5 LED Connectors J5/J9 A-9

viii Contents

Preface ix
Preface
This book is the primary reference and User’s Guide for the LSI Logic
Symbios™SYM22801 Dual Channel PCI to Ultra SCSI Host Adapter. It
contains a complete functional description for the SYM22801 and
includes complete physical and electrical specifications for the
SYM22801.
Audience
This document assumes that you have some familiarity with
microprocessors and related support devices. The people who benefit
from this book are:
•Engineers and managers who are evaluating the processor for
possible use in a system
•Engineers who are designing the processor into a system
Organization
This document has the following chapters and appendixes:
•Chapter 1, Using the SYM22801 Host Adapter, defines the
interfaces and characteristics of the SYM22801 Dual Channel PCI to
Ultra SCSI Host Adapter Board.
•Chapter 2, Installing the SYM22801 Host Adapter, provides both
quick and detailed installation instructions.
•Chapter 3, Configuring the Host Adapter, describes the SCSI
BIOS Configuration Utility to configure adapter and device settings.
•Appendix A, Technical Specifications, describes the physical and
operational environments of the SYM22801 Host Adapter Board.

x Preface
•Appendix B, Glossary of Terms and Abbreviations, provides
definitions of various terminology that is referenced throughout this
user’s guide.
Related Publications
PCI SCSI Device Management System SDMS 4.0 User’s Guide,
Document No. DB15-000099-01

Symbios SYM22801 Dual Channel PCI to Ultra SCSI Host Adapter 1-1
Chapter 1
Usin
g
the SYM22801
Host Adapter
This chapter describes how the SYM22801 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
•Section 1.3, “Interface Descriptions,” page 1-3
1.1 General Description
LSI Logic’s Symbios™ SYM22801 Dual Channel PCI to Ultra SCSI host
adapter provides a SCSI-3, Ultra SCSI interface to PCI computer
systems. Installing this adapter in your PCI system allows connection of
SCSI devices over a SCSI bus.
The dual channel SYM22801 board provides 16-bit, Single-Ended (SE),
SCSI solutions for your computer, using only one PCI slot. This board
supports legacy Fast SCSI devices, and the newest Ultra SCSI devices.
It is also backwards compatible with the existing SYM8751SP host
adapter but with a different external connector.
Symbios SCSI 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. BIOS support for this host
adapter is incorporated on the board in an 8 X 64K Flash BIOS.
This guide and the
PCI SCSI Device Management System SDMS 4.0
User’s Guide
contain product information and installation instructions to
help you gain the full benefits of the SYM22801 Dual Channel PCI to
Ultra SCSI host adapter for your computer system.

1-2 Using the SYM22801 Host Adapter
1.2 Features
This section provides a high level overview of the PCI Interface, the SCSI
Interface, and Board Chacteristics for the SYM22801 Host Adapter
board.
1.2.1 PCI Interface
•Full 32-bit DMA bus master
•Zero wait-state bus master data bursts
•Universal PCI bus voltage support
1.2.2 SCSI Interface
•Two independent SCSI channels
•16-bit single-ended
•Automatically enabled active termination
•Three connectors per channel:
68-pin VHDCI external
68-pin right-angle high density internal with jack blocks
50-pin vertical low density internal
•Fast and Ultra SCSI data transfer capability
•SCSI TERMPWR source with autoresetting circuit breaker and
TERMPWR shorted LED
•SCAM (SCSI Configured AutoMatically) off in BIOS version 4.09 and
later
•Flash EEPROM for BIOS storage
•Serial NVRAM (Non Volatile Random Access Memory) on each
channel for user configuration utility and SCAM information storage
•SCSI activity LED connector for each channel
1.2.3 Board Characteristics
•PCI board dimensions,
190 x 96.52 mm (7.50 x 3.80 inches)
•Universal 32-bit card edge connector

Interface Descriptions 1-3
1.3 Interface Descriptions
This section provides a more detailed explanation about the PCI
Interface, The SCSI Interface, and Ultra SCSI.
1.3.1 The 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 SYM22801 is contained within the Symbios
SYM53C876 PCI to Ultra SCSI I/O Processor chip. The SYM53C876
connects directly to the PCI bus and generates timing protocol in
compliance with the PCI specification.
The PCI interface operates as a 32-bit DMA bus master. The connection
is made through the edge connector J1 (see Figure 2.1). The signal
definitions and pin numbers conform to the PCI Local Bus Specification
Revision 2.1 standard. The SYM22801 conforms to the PCI universal
signaling environment for a 5 V or 3.3 V PCI bus.
1.3.2 The SCSI Interface
The SCSI functionality for the SYM22801 is contained within the
Symbios SYM53C876 PCI-Ultra SCSI I/O Processor chip. The
SYM53C876 connects directly to the two SCSI buses and generates
timing and protocol in compliance with the SCSI standard.
The SCSI interfaces on the SYM22801 operates as 16-bit, synchronous
or asynchronous, single-ended bus, and support Ultra SCSI protocols
and 16-bit arbitration. Each interface is made through two (and only two)
of the connectors J2, J3, and J4 (for Channel A), or J6, J7, and J8 (for
Channel B). Connectors J2 and J6 are 68-pin high density right-angle
receptacles. Connectors J3 and J7 are shielded 68-pin VHDCI 0.8 mm
right-angle receptacles that protrude through the back panel bracket.
Connectors J4 and J8 are 50-pin low density vertical shrouded pin
headers. See Figure 2.1 for the location of these connectors.
Single-ended SCSI active termination is provided on the SYM22801
board. Termination is automatically enabled when only one of the
connectors J2, J3, and J4 (or J6, J7, and J8) is used, or when an 8-bit
device is connected to the 16-bit J3 or J7 connectors. In the latter case,

1-4 Using the SYM22801 Host Adapter
only the upper 8 data bits are automatically terminated. The SYM22801
supplies SCSI bus TERMPWR (termination power) through a blocking
diode and a self-resetting 1.5 A short circuit protection device. The
onboard LED lights when TERMPWR is shorted. Separate switches for
each channel allow user override of termination.
A 40 MHz oscillator is installed on the SYM22801 to provide the clock
frequency to the SYM53C876 that is necessary to support Wide Ultra
SCSI transfers of up to 40 Mbytes/s.
1.3.3 Ultra SCSI
The SYM22801 has full support for Ultra SCSI as well as supporting Fast
SCSI simultaneously. 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 the SCSI bus when setting up your
system. See Chapter 2, Installing the SYM22801 Host Adapter for a
detailed explanation of SCSI bus connections.

Symbios SYM22801 Dual Channel PCI to Ultra SCSI Host Adapter 2-1
Chapter 2
Installin
g
the SYM22801 Host
Adapter
This chapter provides instructions on how to install the SYM22801 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, “SCSI Bus Termination,” page 2-18
•Section 2.4, “Setting Interrupts,” page 2-27
•Section 2.5, “Completing Your Installation,” page 2-28
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 in installing the
SYM22801 host adapter, 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 removing this host adapter board.
Remove the SYM22801 Dual Channel to PCI Ultra SCSI Host
Adapter board from the packing and check that it is not
damaged. An example of this host adapter board is shown in
Figure 2.1.
Step 2. Switch off and unplug the system.
Step 3. Remove the cabinet cover on your computer to access the PCI
slots. Refer to the user’s manual for your computer.

2-2 Installing the SYM22801 Host Adapter
Caution:
Ground yourself
by touching a metal surface before
handling boards. Static charges on your body can damage
electronic components. 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.
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 SYM22801 requires a PCI slot
that 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 of the host adapter into
the PCI slot. Make sure the edge connector is properly
engaged before pressing the board into place. See the example
shown in Figure 2.1.
Note: 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.
Step 7. The bracket around the connectors J3 and J7 (see Figure 2.1)
should fit where the blank panel was removed. Secure the
bracket with the bracket screw before making the internal and
external SCSI bus connections.
Step 8. If you are connecting any internal SCSI devices, plug a 68-pin
connector on the end of the internal SCSI ribbon cable into
connector J2 or J6 for Wide SCSI, or a 50-pin connector into
connector J4 or J8 for normal SCSI (see Figure 2.1). Make
certain to match pin-1 on both connectors.
Note: It is possible to use both internal connectors on a channel
if no external devices are attached to that chanel. You may
use only two of the three connectors on each channel at
once.
Step 9. Connect your computer’s LED cable if desired. This is designed
to drive the front panel LED found on most PC cabinets to
indicate activity on the SCSI bus. See Table A.5 in Appendix A
for the signal name and pin numbers for this LED interface.

Detailed Installation Procedure 2-3
Step 10. Replace the cabinet cover as described in the user’s manual
for your computer.
Step 11. Make all external SCSI bus connections.
Remember: The SCSI bus requires proper termination, and no duplicate
SCSI IDs.
Step 12. Finally, refer to the
PCI SCSI Device Management System
SDMS 4.0 User’s Guide
(or the guide for the software that you
will use) to load the driver software for your particular operating
system.
2.2 Detailed Installation Procedure
This section provides step-by-step instructions for installing the
SYM22801 host adapter and connecting it to your SCSI peripherals. If
you are experienced in these tasks, you may prefer to use the preceding
Section 2.1, “Quick Installation Procedure.” If you are not confident that
you can perform the tasks as described here, LSI Logic suggests getting
assistance.
2.2.1 Before You Start
Before you start, look through the task list below to get an overall idea
of the steps to perform.
•Open your PC cabinet and select an open PCI slot
•Insert the host adapter
•Connect your SCSI peripherals
– Internal
–External
•Terminate the SCSI bus
•Set the peripheral SCSI IDs
•Make any configuration changes
•Close your PC cabinet
•Install the software

2-4 Installing the SYM22801 Host Adapter
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 SYM22801 host adapter that you install can access up to 15
peripheral devices per channel.
2.2.2 Inserting the Host Adapter
For safe and proper installation, check the user’s manual supplied with
your computer to perform the following steps.
Step 1.
Ground yourself
before removing this host adapter board.
Remove the SYM22801 Dual Channel PCI to Ultra SCSI Host
Adapter board from the packing and check that it is not
damaged. An example of this host adapter board is shown in
Figure 2.1.
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
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 SYM22801 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.

Detailed Installation Procedure 2-5
Figure 2.1 Hardware Connections for the SYM22801 Host Adapter
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.
Step 7. To plan on hooking up another host adapter on the same bus
as this host adapter, or an 8-bit device on 68-pin connector, see
the Channel Switches section discussed later in this chapter.
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.
Channel B
LED Connecto
J9
Channel B
68-pin Internal
High Density
SCSI Interface
J6
Channel A
LED Connector
J5
Channel A
68-pin Internal
High Density
SCSI Interface
J2
Channel A
68-pin External
VHDCI
SCSI Interface
J3
Channel B
68-pin External
VHDCI
SCSI Interface
J7
SYM22801 to PCI Bus
Connector on Mainboard
J1
Channel B
Termination
Override
Switches
U2
Channel A
Termination
Override
Switches
U1
Channel A
50-pin Internal
Low Density
SCSI Interface
J4
Channel B
50-pin Internal
Low Density
SCSI Interface
J8

2-6 Installing the SYM22801 Host Adapter
Figure 2.2 Inserting the Host Adapter
Step 8. The bracket around the connectors J3 and J7 (see Figure 2.1)
should fit where you removed the blank panel. Secure it 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 SYM22801 host adapter inside the
computer are made with an unshielded, 68 or 50-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.
Bracket Screw