Seagate Medalist Pro Family Manuel utilisateur

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Medalist Pro Family

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Medalist Pro 6450 (ST36450A)

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Medalist Pro 6451 (ST36451A)

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ATA Interface Drives

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Product Manual

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Medalist Family

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Medalist Pro 6450 (ST36450A)

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Medalist Pro 6451 (ST36451A)

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ATA Interface Drives

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Product Manual

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Publication Number: 32652-001, Rev. B, June 1997

Seagate, Seagate Technology, the Seagate logo, Medalist and the

Medalist logo are registered trademarks of Seagate Technology, Inc.

Other product names are trademarks or registered trademarks of their

owners.

Seagate reserves the right to change, without notice, product offerings

or specifications. No part of this publication may be reproduced in any

form without written permission from Seagate Technology, Inc.

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Quick specification chart . . . . . . . . . . . . . . . . . . . . . . 3

1.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.1 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . 5

1.1.1 Standard configuration . . . . . . . . . . . . . . . . . . 5

1.2 Physical organization . . . . . . . . . . . . . . . . . . . . . 6

1.3 Functional specifications . . . . . . . . . . . . . . . . . . . 6

1.4 Physical dimensions . . . . . . . . . . . . . . . . . . . . . . 7

1.5 Seek time . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6 Multisegmented cache buffer . . . . . . . . . . . . . . . . . 7

1.7 Start and stop times . . . . . . . . . . . . . . . . . . . . . . 8

1.8 Typical power-up and power-down sequence . . . . . . . . . 8

1.9 Power-up sequence . . . . . . . . . . . . . . . . . . . . . 9

1.9.1 Power-down sequence . . . . . . . . . . . . . . . . . . 9

1.10 Auto-park . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.11 Power specifications . . . . . . . . . . . . . . . . . . . . . 9

1.11.1 Power management . . . . . . . . . . . . . . . . . . . 9

1.11.2 Power consumption . . . . . . . . . . . . . . . . . 11

1.12 Input noise . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.13 Environmental specifications . . . . . . . . . . . . . . . . 11

1.13.1 Ambient temperature . . . . . . . . . . . . . . . . . 11

1.13.2 Temperature gradient . . . . . . . . . . . . . . . . . 12

1.13.3 Altitude . . . . . . . . . . . . . . . . . . . . . . . . 12

1.13.4 Relative humidity . . . . . . . . . . . . . . . . . . . 12

1.14 Shock and vibration . . . . . . . . . . . . . . . . . . . . 12

1.15 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.16 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.17 Agency listings . . . . . . . . . . . . . . . . . . . . . . . 13

1.18 Electromagnetic Compliance for the European Union . . . 14

Medalist Pro 6450/6451 Product Manual, Rev. B iii

1.19 FCC verification . . . . . . . . . . . . . . . . . . . . . . 14

2.0 Configuring and mounting the drive . . . . . . . . . . . . . 17

2.1 Handling and static-discharge precautions . . . . . . . . . 17

2.2 I/O cable and connector. . . . . . . . . . . . . . . . . . . 18

2.3 Power connector . . . . . . . . . . . . . . . . . . . . . . . 18

2.4 Options jumper block . . . . . . . . . . . . . . . . . . . . 19

2.4.1 Master/slave configuration . . . . . . . . . . . . . . 20

2.4.2 Alternate capacity jumper . . . . . . . . . . . . . . . . 21

2.4.3 Cable-select option . . . . . . . . . . . . . . . . . . . 21

2.4.4 Remote LED connection . . . . . . . . . . . . . . . . 21

2.5 Mounting the drive . . . . . . . . . . . . . . . . . . . . . . 22

3.0 ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.1 ATA Interface connector pin assignments . . . . . . . . . . 25

3.2 Command set . . . . . . . . . . . . . . . . . . . . . . . . 27

3.2.1 Identify drive command (ECH) . . . . . . . . . . . . . 29

3.2.2 Set Features command (EFH) . . . . . . . . . . . . . 32

3.2.3 Standby timer timeout period . . . . . . . . . . . . . . 34

3.2.4 Sleep command (99H, E6H) . . . . . . . . . . . . . . 34

3.2.5 Automatic Reallocation . . . . . . . . . . . . . . . . . 34

3.3 Synchronous DMA Transfer . . . . . . . . . . . . . . . . . 35

3.3.1 Signal Line Definitions . . . . . . . . . . . . . . . . . . . 35

3.3.2 Protocol Rules . . . . . . . . . . . . . . . . . . . . . 35

3.3.3 Error Register . . . . . . . . . . . . . . . . . . . . . . 36

Appendix. Timing diagrams . . . . . . . . . . . . . . . . . . 37

iv Medalist Pro 6450/6451 Product Manual, Rev. B

Figures

Figure 1. Typical startup current profile . . . . . . . . . . . . . . . . 8

Figure 2. ATA interface connector . . . . . . . . . . . . . . . . . 18

Figure 3. Connectors . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 4. Configuration settings . . . . . . . . . . . . . . . . . . . 20

Figure 5. Connecting cable-selected drives . . . . . . . . . . . . . 22

Figure 6. Mounting dimensions . . . . . . . . . . . . . . . . . . . 23

Figure 7. ATA interface connector pin assignments . . . . . . . . 26

Figure 8. Programmed I/O timing without IORDY . . . . . . . . . . 37

Figure 9. Programmed I/O timing with IORDY . . . . . . . . . . . 38

Figure 10. Multiword DMA timing . . . . . . . . . . . . . . . . . . 39

Figure 11. Sustained synchronous DMA burst . . . . . . . . . . . 40

Medalist Pro 6450/6451 Product Manual, Rev. B v

vi Medalist Pro 6450/6451 Product Manual, Rev. B

Introduction

This manual describes the functional, mechanical and interface specifi-

cations for the Medalist®Pro 6450 and the Medalist Pro 6451 hard disc

drives. The drives are referred to throughout this manual by their model

numbers, ST36450A for the Medalist Pro 6450 and ST36451A for the

Medalist Pro 6451.

Seagate®desktop products take a step intothe future withtheST36450A

and ST36451A. These drives feature MR heads and PRML recording

technology, Fast ATA-2 and Ultra ATA performance, segmented cache,

embedded servo technology, low noise and power management

The ST36450Aand the ST36451A each contain five discs.These drives

use MR heads and PRML technology that provide the drives with

increased areal density. This means that more data can be stored on

each disc.

The ST36450A supports Fast ATA-2 technology and provides burst

transfer rates of up to 16.6 Mbytes per second. The ST36451A supports

Ultra ATA technology and provides burst-transfer rates of up to 33.3

Mbytes per second. Both drives support PIO mode 4, multiword DMA

mode 2 transfer modes and multiple block read/write. The multiple block

read/write feature allows the drives to store several blocks of data in

cache and to transfer them in a single burst.

These drives use a 512-Kbyte segmented cache. Segmenting the cache

providesadesignatedareawhereblocksofcontiguousreadorwritedata

can be staged for transfer in a single burst.

The ST36450A and ST36451A drives have other features that ensure

fast data throughput. Embedded servo technology allows the drives to

position the heads for data retrieval efficiently and accurately while

eliminating the periodic thermal recalibration that can interrupt during

data transfers. These drives also use a 16-bit microprocessor and an

intelligent controller that provides data streaming: direct data transfers

between the drive and the host without microprocessor intervention.

These features allow for a sustained data-transfer rate that facilitates

video-playback and other multimedia operations.

These drives support Active, Idle and Standby power-management

modes. Power-saving modes can be controlled by the computer.

Standby mode reduces power consumption to 2 watts (typical) while

retaining drive accessibility.

Medalist Pro 6450/6451 Product Manual, Rev. B 1

The ATA commands with specific applications for these drives and the

Seagate-unique commands the drives use are discussed in Section 3.0

onpage25.Acompletelistofthecommandsthedrivessupportarefound

in the table on page 27.

The following is a summary of the drives’ features:

Capacity

•6.4 Gbytes formatted

•LBA translation support

•Available software driver that surpasses the 528-Mbyte barrier and

4,096 cylinder barrier limited by some system BIOSs

•Available software driver that provides expanded 32-bit disk access

support for Windows 3.

Performance

•FastATA-2(ST36450A)—bursttransferratesupto16.6-Mbytes-per-

second

•Ultra ATA (ST36451A)—burst transfer rates up to 13.3-Mbytes-per-

second

•Supports DMA mode 2, PIO mode 4 and multiple block read/write.

•512-Kbyte segmented buffer

•12-msec average read seek time

•13.5-msec average write seek time

•Data streaming

Energy-efficiency

•Active, Idle and Standby power-management modes

•2 watt typical power dissipation rating in Standby mode

2 Medalist Pro 6450/6451 Product Manual, Rev. B

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