Seagate Medalist ST3636A Manuale utente

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Medalist Family:

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ST31276A

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ST31082A

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ST3636A

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Product Manual

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ST3636A/ST31082A/ST31276A

Intelligent Disk Drive

Product Manual

P/N 20401028-001

Revision C

September 1996

920 Disc Drive

Scotts Valley, California

95066

FCC Notice This equipment generates and uses radio frequency energy and, if not installed

and used properly; that is, in strict accordance with the manufacturer's

instructions, may cause interference to radio and television reception. It has

been type tested and found to comply with the limits for a Class B computing

device in accordance with the specifications in Part 15 of FCC Rules, which are

designed to provide reasonable protection against such interference in a

residential installation. However, there is no guarantee that interference will

not occur in a particular installation. If this equipment does cause interference

to radio or television reception, which can be determined by turning the

equipment on and off, you are encouraged to try to correct the interference by

one or more of the following measures:

• Reorient the receiving antenna.

• Relocate the computer with respect to the receiver.

• Move the computer into a different outlet so that the computer and receiver

are on different branch circuits.

If necessary, you should consult the dealer or an experienced radio/television

technician for additional suggestions. You may find the following booklet

prepared by the Federal Communications Commission helpful:

How to Identify and Resolve Radio-TV Interference Problems

This booklet (Stock No. 004-000-00345-4) is available from the U.S. Government

Printing Office, Washington, DC 20402.

Warning: Changes or modifications made to this equipment which have not

been expressly approved by Seagate Technology, Inc. may cause radio and

television interference problems that could void the user's authority to operate

the equipment.

Further, this equipment complies with the limits for a Class B digital apparatus

in accordance with Canadian Radio Interference Regulations.

Cet appareil numérique de la classe B est conforme au Règlement sur le

brouillage radioélectrique, C.R.C., ch. 1374.

Seagate, Seagate Technology and the Seagate logo are registered trademarks of

Seagate Technology, Inc. All other trademarks mentioned in this manual are

property of their respective owners.

Important Information About this Manual

All information contained in or disclosed by this document is considered

proprietary by Seagate Technology, Inc. By accepting this material, the

recipient agrees that this material and the information contained therein are

held in confidence and in trust and will not be used, reproduced in whole or in

part, nor its contents revealed to others, except to meet the purpose for which it

was delivered. It is understood that no right is conveyed to reproduce or

translate any item herein disclosed without express written permission from

Seagate Technology, Inc.

Seagate Technology, Inc. provides this manual "as is," without warranty of any

kind, either expressed or implied, including, but not limited to, the implied

warranties of merchantability and fitness for a particular purpose. Seagate

Technology, Inc. reserves the right to change, without notification, the

specifications contained in this manual.

Seagate Technology, Inc. assumes no responsibility for the accuracy,

completeness, sufficiency, or usefulness of this manual, nor for any problem

that might arise from the use of the information in this manual.

Technical Reference Manual Page i

Table of Contents

1. Overview of the Drive 1

What is the Drive? 1

Features of the Drive 1

What the Drive is Composed Of 2

Mechanical Design Features 2

Drive Assembly Housing 2

Head Positioning Mechanism 2

Read/Write Heads and Disks 3

Data and Power Connections 4

Electrical Design Features 4

Pre-amplifier 4

Circuit Board 4

Firmware 4

2. Specifications 5

Specifications In This Chapter 5

Drive Capacity 6

Physical Configuration 6

Performance Characteristics 7

Read/Write Characteristics 8

Reliability 8

Power Requirements 9

Environmental Tolerances 9

Product Test Standards 10

Physical Characteristics 11

3. How the Drive Operates 13

Functions of the Drive 13

Drive Operational Modes 13

Error Correction 13

Universal Translate Mode 14

Master/Slave Configuration 14

Cable Select 15

Forced M/S operation: 15

4. Installing the Drive 17

Take These Precautions 17

Installing the Drive 17

Setting the Drive’s Jumpers 18

Attaching a Data Cable to the Drive 19

Attaching Power to the Drive 21

Mounting the Drive 22

Table of Contents ST3636A/ST1082A/ST31276A

Page ii ST3636A/ST31082A/ST31276A

5. Host Interface 23

About the Host Interface 23

Signal Conventions 23

Signal Levels 23

Signal Descriptions 24

ATA/CAM Master/Slave Reset Timing 26

Host PI0 16-Bit Timing Values 28

Host Demand Mode DMA 16-bit Interface Timing Values 29

6. Register Addresses and Functions 31

Host Address Decoding 31

Addressing the Data 33

Cylinder-head-sector (CHS) mode 33

Logical Block Addressing (LBA) Mode 33

Descriptions of the Registers 34

Data Register 34

Error Register 35

Features Register (formerly Write Precomp Register) 36

Sector Count 36

Sector Number 36

Cylinder Low 37

Cylinder High 37

Device/Head Register 38

Status Register 39

Alternate Status Register 40

Device Control Register 41

Drive Address Register 42

Command Register 42

7. Command Set 45

Command Register 45

Seagate Specific 46

Get Drive Feature word (00) 47

Execute Drive Diagnostic 48

Format Track 48

Identify Device 49

Initialize Device Parameters 53

Power Commands 54

Read DMA 55

Read Multiple 56

Read Sector(s) 57

Read Sector Buffer 58

Read Verify Sectors 58

Recalibrate 59

Seek 59

Set Features (Set Look Ahead Read) 60

Set Multiple Mode 61

S.M.A.R.T. 62

Device Attributes Data Structure 65

Device Attribute Thresholds Data Structure 68

Error Reporting 70

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