Seagate ST3660A - Medalist 545 MB Hard Drive User manual

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Medalist XE Family
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275xe, 545xe
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ATA Interface Drives
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Product Manual
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Medalist XE Family
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275xe, 545xe
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ATA Interface Drives
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Product Manual
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© 1994 Seagate Technology, Inc. All rights reserved
Publication Number: 36283-001, Rev. B
October 1994
Seagate, Seagate Technology and the Seagate logo are registered
trademarks of Seagate Technology, Inc. SeaCache is a trademark of
SeagateTechnology, Inc. Other product names are trademarks or regis-
tered 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
1.0 Specification summary . . . . . . . . . . . . . . . . . . . . . 1
1.1 Format configuration . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Physical organization . . . . . . . . . . . . . . . . . . . . . 2
1.3 Functional specifications . . . . . . . . . . . . . . . . . . . 3
1.4 Drive dimensions . . . . . . . . . . . . . . . . . . . . . . . 3
1.5 Seek time . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.6 Start and stop time . . . . . . . . . . . . . . . . . . . . . . 4
1.7 Power specifications . . . . . . . . . . . . . . . . . . . . . . 4
1.7.1 Voltage tolerances . . . . . . . . . . . . . . . . . . . . 4
1.7.2 Conducted noise . . . . . . . . . . . . . . . . . . . . . 5
1.7.3 Power-management modes . . . . . . . . . . . . . . . 5
1.8 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.8.1 Ambient temperature . . . . . . . . . . . . . . . . . . . 7
1.8.2 Temperature gradient . . . . . . . . . . . . . . . . . . . 7
1.8.3 Relative humidity . . . . . . . . . . . . . . . . . . . . . 8
1.8.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.8.5 Shock and vibration . . . . . . . . . . . . . . . . . . . 8
1.9 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.10 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.11 Auto-park . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.12 Agency listings . . . . . . . . . . . . . . . . . . . . . . . . 9
1.13 FCC verification . . . . . . . . . . . . . . . . . . . . . . . 9
2.0 Configuration and mounting . . . . . . . . . . . . . . . . . 11
2.1 Handling and static-discharge precautions . . . . . . . . . 11
2.2 The ATA interface connector . . . . . . . . . . . . . . . . 12
2.3 Power connector . . . . . . . . . . . . . . . . . . . . . . . 12
2.4 Master/slave jumper block . . . . . . . . . . . . . . . . . . 12
2.4.1 Single-drive configuration . . . . . . . . . . . . . . . 13
2.4.2 Two-drive configuration . . . . . . . . . . . . . . . . . 13
2.4.3 Cable-select configuration . . . . . . . . . . . . . . . 14
Medalist XE Family Product Manual, Rev. B iii

2.4.4 Factory-test configuration . . . . . . . . . . . . . . . . 15
2.5 Optional drive activity LED . . . . . . . . . . . . . . . . . 15
2.6 Mountingthe drive . . . . . . . . . . . . . . . . . . . . . . 16
3.0 ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1 ATA interface connector pin assignments . . . . . . . . . 19
3.2 Bus signal levels . . . . . . . . . . . . . . . . . . . . . . . 19
3.3 SupportedATA commands . . . . . . . . . . . . . . . . . 21
3.3.1 Identify Drive command (ECH) . . . . . . . . . . . . . 23
3.3.2 Set Features command (EFH) . . . . . . . . . . . . . 26
3.3.3 Set Multiple Mode command (C6H) . . . . . . . . . . 28
3.3.4 Read Multiple command (C4H) . . . . . . . . . . . . . 28
3.3.5 Write Multiple command (C5H) . . . . . . . . . . . . . 29
3.4 Onboarddrive diagnostics . . . . . . . . . . . . . . . . . . 30
3.5 ECC performance tests . . . . . . . . . . . . . . . . . . . 30
3.6 SupportedBIOS . . . . . . . . . . . . . . . . . . . . . . . 31
iv Medalist XE Family Product Manual, Rev. B

Figures
Figure 1. Typical startup current profile . . . . . . . . . . . . . . . . 7
Figure 2. The drive interface connector . . . . . . . . . . . . . . . 12
Figure 3. Connectors and jumpers . . . . . . . . . . . . . . . . . 13
Figure 4. Connecting cable-selected drives . . . . . . . . . . . . . 15
Figure 5. Standard mounting dimensions . . . . . . . . . . . . . . 17
Figure 6. Metric mounting dimensions . . . . . . . . . . . . . . . 18
Figure 7. ATA connector pin assignments . . . . . . . . . . . . . 20
Medalist XE Family Product Manual, Rev. B v

1.0 Specification summary
TheMedalist275xeand545xedrivesuseanATAinterface.Theinterface
conforms to
ATA (AT Attachment) Interface X3.221, Rev. 4; SFF 8011:
ATA Timing Extension for Local Bus Attachments, Rev. 2.0
; SFF 8019:
Identify Drive Data for Drives Under8 GB
and Draft Proposal American
National Standards AT Attachment Interface X3.310-948D, Rev. 2E.
Note. The Medalist drives are referred to by their model numbers
throughoutthis manual.The Medalist 275xe is referred to as the
ST3295A. The Medalist 545xe isreferred to as the ST3660A.
1.1 Format configuration
Seagate Medalist drives are low-level formatted at the factory. You do
not need to low-level format the drive.
The drives support LBA addressing and are configured in translation
mode at the factory. (You can verify the number of cylinders,sectors per
track and heads and the total number of sectors using the Identify Drive
(ECH) command.) The table below shows the factory configurations.
ST3295A ST3660A
Cylinders 761 1,057
Heads 14 16
Sectors per track 50 63
Formatted capacity (Mbytes*) 272.7 545.5
Total sectors 532,700 1,065,456
*One Mbyte equals one million bytes.
You can use other values to configure the drive provided the following
conditions are met:
•The number of sectors per track does not exceed 256.
•The number of sectors per track and the numberof headssatisfy the
following relationship:
16
≤
(sectors per track)
×
(heads)
≤
4,096.
•Thetotal sectors donot exceedthe physicalcapacity of thedrive. You
can calculate the total sectors with the following formula:
total sectors = (logical heads) × (logical sectors per track) × (logical
cylinders).
Medalist XE Family Product Manual, Rev. B 1

Note. Some DOS and BIOS pairingscan limit the accessible harddisc
capacity to 528 Mbytes. These systems do not acknowledge
more than 1,024 cylinders in the translation geometry. If more
than 1,024 cylinders are specified in the System Setup, the
system may ignore theadditional cylindersoroverwrap the initial
1,024withtheadditional cylinders.Inanoverwrapcondition,only
the overwrapping cylinders are used to determine the drive
capacity. The overwrap condition for the ST3660A is:
1,057 – 1,024 = 33 cylinders for 17.3 Mbytes.
There are several solutions for this limitation:
•Use a BIOS that supports logical block addressing (LBA) or
extended cylinder-head-sector (CHS) addressing.
•Use a host adapter that supports more than 528 Mbytes.
•Useinstallationsoftwareorasoftwaredevicedriverthatallows
access to the drive’s full capacity to install the drive.
1.2 Physical organization
ST3295A ST3660A
Heads 2 4
Discs 1 2
2 Medalist XE Family Product Manual, Rev. B