Seagate ST9655 Series Bedienungsanleitung

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ST9655 Family

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ST9655AG, ST9550AG

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ST9385AG

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ATA Interface Drives

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Product Manual

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ST9655 Family

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ST9655AG, ST9550AG

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .

ST9385AG

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .

ATA Interface Drives

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Product Manual

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Publication Number: 36270-001, Rev. A

September 1994

Seagate®, Seagate Technology®and the Seagate logo are registered

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

1.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . 1

1.1 Formatted capacity . . . . . . . . . . . . . . . . . . . . . 1

1.2 Physical organization . . . . . . . . . . . . . . . . . . . . 1

1.3 Logical organization . . . . . . . . . . . . . . . . . . . . . 1

1.4 Default logical geometry . . . . . . . . . . . . . . . . . . . 1

1.5 Recording and interface technology . . . . . . . . . . . . . 2

1.6 Physical dimensions . . . . . . . . . . . . . . . . . . . . . 2

1.7 Seek time . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.8 Start times . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.9 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.10 Drive acoustics . . . . . . . . . . . . . . . . . . . . . . . 4

1.11 Environment . . . . . . . . . . . . . . . . . . . . . . . . 4

1.11.1 Ambient temperature . . . . . . . . . . . . . . . . . 4

1.11.2 Temperature gradient . . . . . . . . . . . . . . . . . 4

1.11.3 Relative humidity . . . . . . . . . . . . . . . . . . . 4

1.11.4 Altitude . . . . . . . . . . . . . . . . . . . . . . . . 4

1.11.5 Shock . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.11.6 Vibration . . . . . . . . . . . . . . . . . . . . . . . . 5

1.12 Power specifications . . . . . . . . . . . . . . . . . . . . 6

1.12.1 Power management . . . . . . . . . . . . . . . . . . 6

1.12.2 Power consumption . . . . . . . . . . . . . . . . . . 8

1.12.3 Conducted noise . . . . . . . . . . . . . . . . . . . 10

1.12.4 Voltage tolerance . . . . . . . . . . . . . . . . . . . 10

1.13 Agency certification . . . . . . . . . . . . . . . . . . . . 10

1.13.1 UL/CSA listing . . . . . . . . . . . . . . . . . . . . . 10

1.13.2 FCC verification . . . . . . . . . . . . . . . . . . . . 10

1.14 Compatibility notes . . . . . . . . . . . . . . . . . . . . . 11

1.14.1 ECC testing . . . . . . . . . . . . . . . . . . . . . . 11

ST9655 Family Product Manual, Rev. A iii

2.0 Drive mounting and configuration . . . . . . . . . . . . . . 13

2.1 Handling and static-discharge precautions . . . . . . . . . 13

2.2 Mounting the ST9655 family drives . . . . . . . . . . . . . 13

2.3 Master/slave configuration . . . . . . . . . . . . . . . . . . 15

2.4 Configuring a remote LED . . . . . . . . . . . . . . . . . . 15

3.0 ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . 17

3.1 ATA interface connector . . . . . . . . . . . . . . . . . . . 17

3.2 ATA interface signals and connector pins . . . . . . . . . . 18

3.2.1 AT bus signal levels . . . . . . . . . . . . . . . . . . 19

3.3 ATA interface commands . . . . . . . . . . . . . . . . . . 20

3.3.1 Identify Drive command . . . . . . . . . . . . . . . . 22

3.3.2 Set Features command . . . . . . . . . . . . . . . . . 26

3.3.3 Rest/Resume commands . . . . . . . . . . . . . . . . 27

iv ST9655 Family Product Manual, Rev. A

Figures

Figure 1. Typical startup and operation current profile for the

ST9655AG . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 2. Typical startup and operation current profile for the

ST9550AG and ST9385AG . . . . . . . . . . . . . . . . 9

Figure 3. Mounting dimensions for the ST9655 family drives . . . . 14

Figure 4. Master/slave jumpers for the ST9655 family drives . . . . 16

Figure 5. ATA interface connector for the ST9655 family drives . . 17

ST9655 Family Product Manual, Rev. A v

1.0 Drive specifications

1.1 Formatted capacity

ST9655AG ST9550AG ST9385AG

Guaranteed Mbytes

(1 Mbyte = 106bytes) 524 455 341

Guaranteed sectors 1,024,128 889,248 666,876

Bytes per sector 512 512 512

1.2 Physical organization

ST9655AG ST9550AG ST9385AG

Read/Write heads 8 8 6

Discs 4 4 3

1.3 Logical organization

The ST9655 family drives support all head, cylinder andsector geome-

tries, subject to the maximums specified below, and to the following

condition:

(

sectors

) ×(

heads

) ×

(cylinder

s) ≤

total sectors per drive

ST9655AG ST9550AG ST9385AG

Sectors per track (max) 64 64 64

Read/Write heads (max) 16 16 16

Cylinders (max) 1,024 1,024 1,024

1.4 Default logical geometry

ST9655AG ST9550AG ST9385AG

Sectors per track 63 59 51

Read/Write heads 16 16 14

Cylinders 1,016 942 934

ST9655 Family Product Manual, Rev. A 1

1.5 Recording and interface technology

Specification ST9655AG ST9550AG ST9385AG

Interface ATA ATA ATA

Recording method RLL (1,7) RLL (1,7) RLL (1,7)

Recording density (BPI) 72,100 59,124 59,124

Flux density (FCI) 44,360 44,360 44,360

Track density (TPI) 3,227 3,282 3,282

Spindle speed (RPM ±0.5%) 3,980 3,980 3,980

Internal data transfer rate

(Mbits per sec max—ZBR) 28.26 27.28 27.28

I/O data transfer rate (Mbytes per sec max)

PIO Mode 3 with IORDY

Multiword DMA Mode 1 11.1

13.3 8.0

13.3

Interleave 1:1 1:1 1:1

Cache buffer (Kbytes) 120 120 120

1.6 Physical dimensions

Height (max) inches

(mm) 0.754

(19.15)

Width (max) inches

(mm) 2.760

(70.10)

Depth (max) inches*

(mm) 4.010

(101.85)

Weight (typical) ounces

(kg) 7.4

(0.21)

* Excludes I/O connector pins, whichmay extendup to 0.010 inches be-

yond the edge of the head/disc assembly.

1.7 Seek time

Allseektimesaremeasuredusinga25 MHz486 ATcomputer(orfaster)

witha8.3MHzI/Obus. Themeasurementsaretakenwithnominalpower

at sea level and 25°C ambient temperature. The specifications in the

following table are defined asfollows:

2 ST9655 Family Product Manual, Rev. A

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