TECHNICAL
MANUAL
LSI53C895A
PCI to Ultra2
SCSI Controller
Version 2.2
April 2001
®
S14028.B
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 DB14-000089-03, Fourth Edition (April 2001)
This document describes the LSI Logic LSI53C895A PCI to Ultra2 SCSI
Controller and will remain the official reference source for all revisions/releases
of this product until rescinded by an update.
To receive product literature, 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.
Ultra SCSI is the term used by the SCSI Trade Association (STA) to describe
Fast-20 SCSI, as documented in the SCSI-3 Fast-20 Parallel Interface standard,
X3,277-199X.
Ultra2 SCSI is the term used by the SCSI Trade Association (STA) to describe
Fast-40 SCSI, as documented in the SCSI Parallel Interface-2 standard, (SPI-2)
X3710-1142D.
Copyright © 1998–2001 by LSI Logic Corporation. All rights reserved.
TRADEMARK ACKNOWLEDGMENT
The LSI Logic logo design, TolerANT, LVDlink, and SCRIPTS are registered
trademarks or trademarks of LSI Logic Corporation. All other brand and product
names may be trademarks of their respective companies.
SR/HH
ii
Preface
This book is the primary reference and technical manual for the
LSI53C895A PCI to Ultra2 SCSI Controller. It contains a complete
functional description for the product and also includes complete physical
and electrical specifications.
Audience
This manual provides reference information on the LSI53C895A PCI to
Ultra2 SCSI Controller. It is intended for system designers and
programmers who are using this device to design an Ultra2 SCSI port for
PCI-based personal computers, workstations, servers or embedded
applications.
Organization
This document has the following chapters and appendixes:
•
•
Chapter 1,
General Description,
includes general information about
the LSI53C895A.
Chapter 2,
Functional Description,
describes the main functional
areas of the chip in more detail, including interfaces to the SCSI bus
and external memory.
Chapter 3,
Signal Descriptions,
contains pin diagrams and signal
descriptions.
Chapter 4,
Registers,
describes each bit in the operating registers,
and is organized by register address.
Chapter 5,
SCSI SCRIPTS Instruction Set,
defines all of the SCSI
SCRIPTS instructions that are supported by the LSI53C895A.
•
•
•
Preface
iii
•
•
•
Chapter 6,
Electrical Specifications,
contains the electrical
characteristics and AC timing diagrams.
Appendix A,
Register Summary,
is a register summary.
Appendix B,
External Memory Interface Diagram Examples,
contains several example interface drawings for connecting the
LSI53C895A to external ROMs.
Related Publications
For background information, please contact:
ANSI
11 West 42nd Street
New York, NY 10036
(212) 642-4900
Ask for document number X3.131-199X (SCSI-2)
Global Engineering Documents
15 Inverness Way East
Englewood, CO 80112
(800) 854-7179 or (303) 397-7956 (outside U.S.) FAX (303) 397-2740
Ask for document number X3.131-1994 (SCSI-2); X3.253
(SCSI-3 Parallel Interface)
ENDL Publications
14426 Black Walnut Court
Saratoga, CA 95070
(408) 867-6642
Document names:
SCSI Bench Reference, SCSI Encyclopedia,
SCSI Tutor
Prentice Hall
113 Sylvan Avenue
Englewood Cliffs, NJ 07632
(800) 947-7700
Ask for document number ISBN 0-13-796855-8,
SCSI: Understanding
the Small Computer System Interface
iv
Preface
LSI Logic World Wide Web Home Page
www.lsilogic.com
PCI Special Interest Group
2575 N.E. Katherine
Hillsboro, OR 97214
(800) 433-5177; (503) 693-6232 (International); FAX (503) 693-8344
Conventions Used in This Manual
The word
assert
means to drive a signal true or active. The word
deassert
means to drive a signal false or inactive.
Hexadecimal numbers are indicated by the prefix “0x” —for example,
0x32CF. Binary numbers are indicated by the prefix “0b” —for example,
0b0011.0010.1100.1111.
Revision Record
Revision
0.5
1.0
1.1
2.0
2.1
2.2
Date
4/99
7/99
9/99
2/00
7/00
4/01
Remarks
Advance information version of the manual.
Preliminary version of the manual.
PCI timings corrected in Chapter 6, Table 6.3, and Figure 6.41 corrected.
Final version.
Added Figure 6.43.
All product names changed from SYM to LSI. Updated DC electrical
specifications and test conditions.
Preface
v
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