Seagate MARATHON 810 User manual

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Marathon 810
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ATA Interface Drive
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Product Manual
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Marathon 810 (ST9816AG)
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ATA Interface Drive
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Product Manual
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1995 Seagate Technology, Inc. All rights reserved
Publication Number: 36300-101, Rev. A, August 1995
Seagate, Seagate Technology and the Seagate logo are registered
trademarks of Seagate Technology, Inc. SafeRite and Marathon are
trademarks of Seagate Technology, Inc. Other product names are reg-
istered 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 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
Marathon 810 (ST9816AG) Product Manual, August 1995 iii

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 configuration . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . 23
3.2.1 Supported ATA commands . . . . . . . . . . . . . . . 23
3.2.2 Identify Drive command . . . . . . . . . . . . . . . . 25
3.2.3 Set Features command . . . . . . . . . . . . . . . . 28
Appendix. Compatibility notes . . . . . . . . . . . . . . . . . . 29
iv Marathon 810 (ST9816AG) Product Manual, August 1995

Figures
Figure 1. Typical startup and operation current profile for
the ST9816AG . . . . . . . . . . . . . . . . . . . . . . 8
Figure 2. Connector and master/slave jumper setup for
the ST9816AG . . . . . . . . . . . . . . . . . . . . . . 16
Figure 3. Mounting dimensions for the ST9816AG . . . . . . . . . 18
Figure 4. ATA Interface connector dimensions . . . . . . . . . . . 19
Figure 5. I/O pins and associated ATA signals supported by
the ST9816AG . . . . . . . . . . . . . . . . . . . . . . 22
Marathon 810 (ST9816AG) Product Manual, August 1995 v

Introduction
The Marathon810 (ST9816AG) provides high storage capacity in a
small, low-profile hard disc drive.
Key features:
•SafeRiteshock protection
•Low power consumption
•Compact, MCC-compatible form-factor
•Quiet operation
•Advanced partial-response, maximum-likelihood (PRML) read channel
•Supports logical block addressing
•Supports PIO modes 0, 1, 2, 3 and 4, and DMA modes 0, 1 and 2.
•High instantaneous data-transfer rates (up to 16.6 Mbytes per second
using PIO mode 4 and DMA mode 2).
•Fast microprocessor for lower command overhead
•120-Kbyte multisegmented adaptive cache
•Advanced caching and on-the-fly error-correction algorithms
•Supports Read Multiple and Write Multiple commands
•Supports autodetection of master/slave drives using cable select and
DASP– signals.
Marathon 810 (ST9816AG) Product Manual, August 1995 1

Specification summary table
The specifications listed in this table are for quick reference. For details
on specification measurement or definition, see the appropriate section
of this manual.
Drive Specification ST9816AG
Guaranteed Capacity (×106bytes) 810
Guaranteed sectors 1,583,568
Bytes per sector 512
Default sectors per track 63
Default Read/Write heads 16
Default cylinders 1,571
Physical read/write heads 8
Discs 4
Recording density (bits/inch) 90,000
Track density (tracks/inch) 3,807
Areal density (Mbits/inch2)342
Spindle speed (RPM) 4,500
Internal data-transfer rate (Mbits/sec, max) 44
I/O data-transfer rate (Mbytes/sec, max) 16.6
ATAdata-transfer modes supported PIO modes 0, 1, 2, 3, 4;
Multiword DMAmodes 0, 1, 2
Cache buffer (Kbytes) 120
Height (inches, max) 0.754
Width (inches, max) 2.76
Depth (inches, max, excluding I/O pins) 4.010
Weight (ounces, typical) 7.4
Track-to-track seek time (msec, typical) 6 (read), 7 (write)
Average seek time (msec, typical) 16 (read), 20 (write)
Full-stroke seek time (msec, max) 26 (read), 28 (write)
2 Marathon 810 (ST9816AG) Product Manual, August 1995