Seagate MARATHON 1680 Manuale utente

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Marathon 2250

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Marathon 1680

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ATA Interface Drives

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Product Manual

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Marathon 2250 (ST92255AG)

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Marathon 1680 (ST91685AG)

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ATA Interface Drives

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Product Manual

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Publication Number: 36337-101, Rev. B, March 1997

Seagate, Seagate Technology and the Seagate logo are registered

trademarks of Seagate Technology, Inc. Marathon and SafeRite are

trademarks of Seagate Technology. Other product names are registered

trademarks or 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

Specification summary table . . . . . . . . . . . . . . . . . . . 2

1.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . 5

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

1.1.1 Default logical geometry . . . . . . . . . . . . . . . . 5

1.1.2 Supported CHS translation geometries . . . . . . . . 5

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

1.3 Recording and interface technology . . . . . . . . . . . . . 6

1.4 Physical characteristics . . . . . . . . . . . . . . . . . . . 7

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

1.6 Start times . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.7 Power specifications . . . . . . . . . . . . . . . . . . . . . 8

1.7.1 Power consumption . . . . . . . . . . . . . . . . . . 8

1.7.2 Power recovery . . . . . . . . . . . . . . . . . . . . . 9

1.7.3 Conducted noise . . . . . . . . . . . . . . . . . . . . 9

1.7.4 Voltage tolerance . . . . . . . . . . . . . . . . . . . . 10

1.7.5 Power-management modes . . . . . . . . . . . . . . 10

1.8 Environmental tolerances . . . . . . . . . . . . . . . . . . 12

1.8.1 Ambient temperature . . . . . . . . . . . . . . . . . . 12

1.8.2 Temperature gradient . . . . . . . . . . . . . . . . . 12

1.8.3 Humidity . . . . . . . . . . . . . . . . . . . . . . . . 12

1.8.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.8.5 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.8.6 Vibration . . . . . . . . . . . . . . . . . . . . . . . . 13

1.9 Drive acoustics . . . . . . . . . . . . . . . . . . . . . . . 14

1.10 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1.11 Agency certification . . . . . . . . . . . . . . . . . . . . 15

1.11.1 Safety certification . . . . . . . . . . . . . . . . . . 15

Marathon 2250 and Marathon 1680 Product Manual iii

1.11.2 Electromagnetic Compatibility . . . . . . . . . . . . 15

1.11.3 FCC verification . . . . . . . . . . . . . . . . . . . . 15

2.0 Drive mounting and configuration . . . . . . . . . . . . . . 17

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

2.2 Jumper settings . . . . . . . . . . . . . . . . . . . . . . . 17

2.2.1 Master/slave configuration . . . . . . . . . . . . . . . 17

2.3 Remote LED configuration . . . . . . . . . . . . . . . . . 19

2.4 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . 19

2.5 ATA interface connector . . . . . . . . . . . . . . . . . . . 23

3.0 ATA Attachment-3 Interface (ATA-3) . . . . . . . . . . . . . 25

3.1 ATA interface signals and connector pins . . . . . . . . . . 25

3.1.1 AT bus signal levels . . . . . . . . . . . . . . . . . . 25

3.2 ATA Interface commands . . . . . . . . . . . . . . . . . . 27

3.2.1 Supported ATA commands . . . . . . . . . . . . . . . 27

3.2.2 Identify Drive command . . . . . . . . . . . . . . . . 29

3.2.3 Set Features command . . . . . . . . . . . . . . . . 32

3.2.4 S.M.A.R.T. commands . . . . . . . . . . . . . . . . . 34

3.2.5 Drive Security commands . . . . . . . . . . . . . . . 35

Appendix. Compatibility Notes . . . . . . . . . . . . . . . . . . 37

iv Marathon 2250 and Marathon 1680 Product Manual

Figures

Figure 1. Typical startup and operation current profile. . . . . . . . 9

Figure 2. Connector and master/slave jumper setup . . . . . . . . 18

Figure 3. Drive mounting dimensions—side and bottom view. . . . 20

Figure 4. Drive mounting dimensions—end view . . . . . . . . . . 21

Figure 5. ATA Interface connector dimensions . . . . . . . . . . . 23

Figure 6. I/O pins and supported ATA signals . . . . . . . . . . . 26

Marathon 2250 and Marathon 1680 Product Manual v

vi Marathon 2250 and Marathon 1680 Product Manual

Introduction

The Marathon 2250 (ST92255AG) and Marathon 1680 (ST91685AG)

provide very high storage capacity in a small, 17-mm hard disc drive.

Key Features:

•Low power consumption

•Compact, SFF-8200-compatible form-factor

•High rotational speed for fast internal data transfer

•Quiet operation

•SafeRiteshock protection

•Support for PIO modes 0, 1, 2, 3 and 4, as well as single-word and

multiword DMA modes 0, 1 and 2

•High instantaneous (burst) data-transfer rates (up to 16.6 Mbytes per

second) using PIO mode 4 and DMA mode 2

•103-Kbyte adaptive multisegmented cache

•Fast caching and on-the-fly error-correction algorithms

•Fast microprocessor for low command overhead

•Support for S.M.A.R.T. drive monitoring and reporting

•Support for drive password security

•Support for Read/Write Multiple commands

•Support for autodetection of master/slave drives using cable-select

(CSEL) and DASP– signals

Marathon 2250 and Marathon 1680 Product Manual 1

Specification summary table

The specifications listed in this table are for quick reference. For details

on a specificationmeasurement ordefinition, seethe appropriatesection

of this manual.

Drive Specification Marathon

2250 Marathon

1680

Guaranteed Mbytes (1 Mbyte=106bytes) 2,250 1,680

Guaranteed sectors (LBAmode) 4,394,940 3,282,490

Bytes per sector 512

Default sectors per track 63 63

Default read/write heads 16 16

Default cylinders 4,360 3,256

Physical read/write heads 10 8

Discs 5 4

Recording density (bits/inch, max) 120,000

Track density (tracks/inch) 5,555

Areal density (Mbits/inch2) 666

Spindle speed (RPM) 4,508

Internal data-transfer rate (Mbits/sec max) 60.8

I/O data-transfer rate (Mbytes/sec max) 16.6

ATAdata-transfer modes supported PIO modes 0, 1, 2, 3, 4 and

multiword DMAmodes 0, 1, 2

Cache buffer (Kbytes) 103

Height (mm max) 17.2

Width (mm max) 70.1

Length (mm max) 100.45

Weight (grams typical) 204 200

Track-to-track seek time (msec typical) 4 (read), 5 (write)

Average seek time (msec typical) 12 (read), 14 (write)

Full-stroke seek time (msec max) 26 (read), 28 (write)

Average latency (msec) 6.65

2 Marathon 2250 and Marathon 1680 Product Manual

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