Seagate MARATHON 420SL Product Manual

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Marathon SL Family

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Marathon 420sl

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ATA Interface Drives

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Product Manual

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Marathon SL Family

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Marathon 420sl

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(ST9420A, ST9420AG)

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ATA Interface Drives

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Product Manual

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August 16, 1995 Seagate, Seagate Technology and the Seagate logo are registered

trademarks of Seagate Technology, Inc. SafeRite is a trademark of Seagate Technology, Inc. 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 Tec hnology, Inc.

Marathon 420sl Product Manual, August 1995 iii

Contents

Intr od u ction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Specificatio n Summary table . . . . . . . . . . . . . . . . . . . 2

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

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

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

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

1.2 Physical organization . . . . . . . . . . . . . . . . . . . . 5

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

1.4 Physical dimensions . . . . . . . . . . . . . . . . . . . . . 6

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

1.6 Startup times . . . . . . . . . . . . . . . . . . . . . . . . 7

1.7 Power specifications . . . . . . . . . . . . . . . . . . . . . 7

1.7.1 Power consumption . . . . . . . . . . . . . . . . . . 7

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

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

1.7.4 Voltage tolerance . . . . . . . . . . . . . . . . . . . . 9

1.7.5 Power-management modes . . . . . . . . . . . . . . 9

1.8 Environmental tolerances . . . . . . . . . . . . . . . . . . 10

1.8.1 Ambient temperature . . . . . . . . . . . . . . . . . . 10

1.8.2 Temperature gradient . . . . . . . . . . . . . . . . . 10

1.8.3 Relative humidity . . . . . . . . . . . . . . . . . . . . 10

1.8.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.8.5 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.8.6 Vibration . . . . . . . . . . . . . . . . . . . . . . . . 11

1.9 Drive acoustics . . . . . . . . . . . . . . . . . . . . . . . 12

1.10 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.11 Agency certification . . . . . . . . . . . . . . . . . . . . 13

1.11.1 Safety certification . . . . . . . . . . . . . . . . . . 13

iv Marathon 420sl Product Manual, August 1995

1.11.2 FCC verification . . . . . . . . . . . . . . . . . . . . 13

2.0 Drive mounting and configuration . . . . . . . . . . . . . . 15

2.1 Handling and static-discharge precautions . . . . . . . . . 15

2.2 Jumper settings . . . . . . . . . . . . . . . . . . . . . . . 15

2.2.1 Master/slave configurati on . . . . . . . . . . . . . . . 15

2.3 Remote LED configuration . . . . . . . . . . . . . . . . . 17

2.4 Drive mounting . . . . . . . . . . . . . . . . . . . . . . . 17

2.5 ATA interface connector . . . . . . . . . . . . . . . . . . . 19

3.0 ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . 21

3.1 ATA interface signals and connector pins . . . . . . . . . . 21

3.1.1 AT bus signal levels . . . . . . . . . . . . . . . . . . 21

3.2 ATA Interface commands . . . . . . . . . . . . . . . . . . 22

3.2.1 Supported ATA commands . . . . . . . . . . . . . . . 22

3.2.2 Identify Drive comman d . . . . . . . . . . . . . . . . 25

3.2.3 Set Features command . . . . . . . . . . . . . . . . 28

Appendix. Compatibility Notes . . . . . . . . . . . . . . . . . . 29

Marathon 420sl Product Manual, August 1995 v

Figures

Figure 1. Typical startup and operation current profile for a

Marathon 420sl . . . . . . . . . . . . . . . . . . . . . . 8

Figure 2. Connector and master/slave jumper set up for

the Marathon 420sl . . . . . . . . . . . . . . . . . . . . 16

Figure 3. Mounting dimensions for the Marathon 420sl . . . . . . . 18

Figure 4. Additional ATA Interface connector dimensions . . . . . 19

Figure 5. I/O pins and associated ATA signals supported

by the Marathon 420sl . . . . . . . . . . . . . . . . . . . 24

Marathon 420sl Product Manual, August 1995 1

Introduction

The Marathon 420sl provides high storage capacity in a sma ll, low-profile hard disc drive.

Key features:

• Low power consumption

• Low profile (12.5-mm high); compact, MCC-compatible form-fact or

• Quiet operation

• SafeRite shock protection (optional; ST9420AG only)

• Advanced partial-response, maximum-likelihood (PRML) read channel

• Support s logical block addressing

• Supports PIO modes 0, 1, 2, 3 and 4, as well as DMA modes 0, 1 and 2

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

ond) using PIO mode 4 and DMA mode 2

• Fast microprocessor for lower command overhead

• Higher rotational speed for faster data access

• 120-Kbyte multisegmented adaptive cache

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

• Supports Read/Write Multiple commands

• Supports autodetection of master/slave drives using cable select and

DASP– signals

2 Marathon 420sl Product Manual, August 1995

Specification Summary table

The specifications listed in this table are for quick reference. For details on specification measurements or def initions, please see the appropriate section of this manual.

Drive Specifi cation Marathon 420sl

Guaranteed Mbytes (×106 bytes) Guaranteed sectors 822,016 Bytes per sect or 512 Default sectors per track 52 Default Read/Write heads 16 Default cylinders 988 Physical read/write he ads 4 Discs 2 Recording densit y (bits/ inch) 90,000 Track density (tracks/inch) 3,807 Areal density (M bit s/inch Spindle speed (RPM) 4,500 Internal data -t ra nsf er rat e (M bits/sec, max) 44 I/O data-transfer rate (Mbytes per sec, max) 16.6 A TA dat a-tr ansf er mo des su ppor t ed PIO modes 0, 1, 2, 3, 4;

Cache buffer (Kbytes) 120

)342

Multiword DMA modes 0, 1, 2

420.8

Height (inches, max) 0.502 Width (inches, max) 2.760 Depth (inches, m ax) 4.010 Weight (oz, typical) 5.7 Track-t o-tr ack seek time (msec, typical) 6 (read), 7 (write) Average see k time (mse c, typic al) 16 (read), 20 (write) Full-stroke seek t ime (ms ec, typical) 26 (read) , 28 (write)

Marathon 420sl Product Manual, August 1995 3

Drive Specifi cation Marathon 420sl

Average lat ency (msec) 6.67 Power-on to ready (seconds , typical) 7 Standby to ready (seconds , typical) 3 Spinup power and cur ren t (typical) 3. 30 wat t s, 0. 660 amps Seek power and cur ren t (typical) 1.90 watts, 0. 380 amps Read/Writ e power and curr ent (typica l) 1.95 watts, 0. 390 amps Idle mode power and cu rrent (typica l) 0.90 watts, 0. 180 amps Standby mode power and curr ent (typical) 0.25 watts, 0. 050 amps Sleep mode power a n d curren t (ty pical) 0.15 watts, 0. 030 amps Volt age toler ance (including noise) +5 volts +5% –10% Ambient temperature (°C) 5 to 55 (o p.), –40 to 70 (nonop.) Temperature grad ient (°C per hour max ) 30 Relative humidity 8%–80% (10%/ hr max grad. ) Wet bulb temper at ur e (°C max) 29 (op.), 40 (nonop. ) Altitude (mete rs above m ean sea level, max) –300 to 3,040 (op. ),

–300 to 12,1 90 (non op. )

Shock, operating (Gs max at 2 or 11 msec) 10 (ST9420A)

100 (ST9420 AG ) Shock, nonopera ting (Gs max) 300 (2 msec), 150 (11 msec ) Vibration (Gs max at 22–450 Hz) 0.50 (op.) 4.0 (nonop .) Drive Acoustics, Idle mode (dBA) 24 (typical), 28 (max) Drive Acoustics, seeking (dBA) 26 (typical), 30 (max) Nonrecovera ble rea d error s 1 per 10

bits read Mean time between failures (power-on hours) 300,000 Contact start-st op cycles 50,000 Service life (years) 5

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