LSI LSI53C876 Manuale utente

S14066

LSI53C876/876E

PCI to Dual Channel

SCSI Multifunction

Controller

TECHNICAL

MANUAL

March 2001

Version 2.1

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 DB14-000167-00, First Edition (March 2001)

This document describes the LSI Logic LSI53C876/876E PCI to Dual Channel

SCSI Multifunction 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revisions/releases of this product until rescinded by an update.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.

TRADEMARK ACKNOWLEDGMENT

The LSI Logic logo design, TolerANT, SDMS, SYMplicity, and SCRIPTS are

registered trademarks or trademarks of LSI Logic Corporation. All other brand

and product names may be trademarks of their respective companies.

Preface iii

Preface

This book is the primary reference and technical manual for the LSI Logic

LSI53C876/876E PCI to Dual Channel SCSI Multifunction Controller. It

contains a complete functional description for the product and includes

complete physical and electrical speciﬁcations.

This technical manual assumes the user is familiar with the current and

proposed standards for SCSI and PCI. For additional background

information on these topics, please refer to the list of reference materials

provided in the Related Publications list.

Audience

This manual assumes some prior knowledge of current and proposed

SCSI and PCI standards.

Organization

This document has the following chapters and appendixes:

•Chapter 1, General Description, includes general information about

the LSI53C876/876E.

•Chapter 2, Functional Description, describes the main functional

areas of the chip in more detail, including the 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 the SCSI

SCRIPTS instructions supported by the LSI53C876/876E.

iv Preface

•Chapter 6, Electrical Characteristics, contains the electrical

characteristics and AC timing diagrams.

•Appendix A, Register Summary, is a register summary.

•Appendix B, External Memory Interface Diagram Examples,

contains serveral example interface drawings for connecting the

LSI53C876 to external ROMs.

Related Publications

For background 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) or 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

LSI Logic World Wide Web Home Page

www.lsil.com

Preface v

PCI Special Interest Group

2575 N. E. Katherine

Hillsboro, OR 97214

(800) 433-5177; (503) 693-6232 (International); FAX (503) 693-8344

SCSI SCRIPTS™ Processors Programming Guide,

Order Number

S14044.A

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 Date Remarks

1.0 9/96 Prelimiary technical manual.

2.0 11/97 Revised technical manual.

2.1 3/01 All product names changed from SYM to LSI.

vi Preface

Contents vii

Contents

Chapter 1 General Description

1.1 Wide Ultra SCSI Beneﬁts 1-4

1.2 TolerANT®Technology 1-4

1.3 LSI53C876 Beneﬁts 1-5

1.3.1 PCI Performance 1-5

1.3.2 SCSI Performance 1-5

1.3.3 Testability 1-6

1.3.4 Integration 1-7

1.3.5 Reliability 1-7

Chapter 2 Functional Description

2.1 PCI Functional Description 2-3

2.1.1 PCI Addressing 2-3

2.1.2 PCI Bus Commands and Functions Supported 2-4

2.1.3 Internal Arbiter 2-10

2.1.4 PCI Cache Mode 2-11

2.2 SCSI Functional Description 2-13

2.2.1 Two SCSI Controllers 2-13

2.2.2 SCRIPTS Processor 2-13

2.2.3 JTAG Boundary Scan Testing 2-16

2.2.4 SCSI Loopback Mode 2-17

2.2.5 Parity Options 2-17

2.2.6 DMA FIFO 2-20

2.2.7 SCSI Bus Interface 2-24

2.2.8 Synchronous Operation 2-30

2.2.9 Designing a Wide Ultra SCSI System 2-32

2.2.10 Interrupt Handling 2-33

2.2.11 Chained Block Moves 2-40

2.3 Parallel ROM Interface 2-43

viii Contents

2.4 Serial EEPROM Interface 2-45

2.4.1 Mode A Operation 2-45

2.4.2 Mode B Operation 2-46

2.4.3 Mode C Operation 2-46

2.4.4 Mode D Operation 2-48

2.5 Power Management 2-48

2.5.1 Power State D0 2-49

2.5.2 Power State D1 2-49

2.5.3 Power State D2 2-49

2.5.4 Power State D3 2-50

Chapter 3 Signal Descriptions

3.1 PCI Interface Signals 3-6

3.1.1 System Signals 3-6

3.1.2 Address and Data Signals 3-7

3.1.3 Interface Control Signals 3-8

3.1.4 Arbitration Signals 3-9

3.1.5 Error Reporting Signals 3-9

3.1.6 PCI Interrupt Signals 3-10

3.1.7 GPIO Interface Signals 3-11

3.2 SCSI Bus Interface Signals 3-13

3.2.1 SCSI Bus Interface Signal 3-13

3.2.2 SCSI Bus Interface 3-14

3.3 ROM/Flash Interface Signals 3-18

3.4 Test Interface Signals 3-19

3.5 Power and Ground Signals 3-20

3.5.1 Isolated Power Supplies 3-21

3.6 MAD Bus Programming 3-21

Chapter 4 Registers

4.1 PCI Conﬁguration Registers 4-1

4.2 SCSI Registers 4-20

Chapter 5 SCSI SCRIPTS Instruction Set

5.1 Low Level Register Interface Mode 5-1

5.2 High Level SCSI SCRIPTS Mode 5-2

5.2.1 Sample Operation 5-3

Contents ix

5.3 Block Move Instruction 5-6

5.3.1 First Dword 5-6

5.3.2 Second Dword 5-13

5.4 I/O Instruction 5-13

5.4.1 First Dword 5-13

5.4.2 Second Dword 5-22

5.5 Read/Write Instructions 5-22

5.5.1 First Dword 5-22

5.5.2 Second Dword 5-24

5.5.3 Read-Modify-Write Cycles 5-24

5.5.4 Move To/From SFBR Cycles 5-25

5.6 Transfer Control Instructions 5-27

5.6.1 First Dword 5-27

5.6.2 Second Dword 5-34

5.7 Memory Move Instructions 5-34

5.7.1 Read/Write System Memory from SCRIPTS 5-36

5.7.2 Second Dword 5-36

5.7.3 Third Dword 5-36

5.8 Load and Store Instructions 5-38

5.8.1 First Dword 5-39

5.8.2 Second Dword 5-40

Chapter 6 Electrical Characteristics

6.1 DC Characteristics 6-1

6.2 3.3 V PCI DC Characteristics 6-7

6.3 TolerANT Technology Electrical Characteristics 6-8

6.4 AC Characteristics 6-12

6.4.1 PCI and External Memory Interface Timings 6-15

6.4.2 PCI and External Memory Interface Timing 6-54

6.4.3 SCSI Interface Timing 6-55

6.5 Package Diagrams 6-60

Appendix A Register Summary

Appendix B External Memory Interface Diagram Examples

x Contents

Index

Customer Feedback

Figures 1.1 Typical LSI53C876 System Application 1-2

1.2 Typical LSI53C876 Board Application 1-3

2.1 LSI53C876 Block Diagram 2-2

2.2 Parity Checking/Generation 2-20

2.3 DMA FIFO Sections 2-20

2.4 LSI53C876 Host Interface SCSI Data Paths 2-24

2.5 LSI53C876 Differential Wiring Diagram 2-27

2.6 Regulated Termination 2-29

2.7 Determining the Synchronous Transfer Rate 2-32

2.8 Block Move and Chained Block Move Instructions 2-40

3.1 LSI53C876 208-Pin PQFP Diagram 3-2

3.2 LSI53C876 256-Ball BGA Diagram (Top View) 3-3

3.3 LSI53C876 Functional Signal Grouping 3-4

5.1 SCRIPTS Overview 5-5

5.2 Block Move Instruction Register 5-8

5.3 I/O Instruction Register 5-16

5.4 Read/Write Instruction Register 5-23

5.5 Transfer Control Instruction 5-29

5.6 Memory Move Instruction 5-37

5.7 Load and Store Instruction Format 5-41

6.1 Rise and Fall Time Test Conditions 6-10

6.2 SCSI Input Filtering 6-10

6.3 Hysteresis of SCSI Receivers 6-10

6.4 Input Current as a Function of Input Voltage 6-11

6.5 Output Current as a Function of Output Voltage 6-11

6.6 Clock Timing 6-12

6.7 Reset Input 6-13

6.8 Interrupt Output 6-14

6.9 Conﬁguration Register Read 6-17

6.10 Conﬁguration Register Write 6-18

6.11 Target Read (Not From External Memory) 6-19

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