Seagate MEDIALIST 2520 Product manual

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Medalist 2520

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Ultra ATA Interface Drive

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Product Manual

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Medalist 2520 (ST32520A)

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Ultra ATA Interface Drive

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Product Manual

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© 1997 Seagate Technology, Inc. All rights reserved
Publication Number: SG35087-001, Rev. A, October 1997
Seagate, Seagate Technology, the Seagate logo, Medalist and the

Medalist logo are registered t rademarks of Seagate Technology, Inc.
Other product names are trademarks or registered t rademarks of their
owners.

Seagate reserves the right t o change, without notice, produc t offerings
or specifications. No part of this publication may be reproduced in any
form without written permission from Seagate Technology, Inc.

Medalist 2520 Product Manual, Rev. A iii

Contents

Introduct ion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Specification summary table . . . . . . . . . . . . . . . . . . . . 3

1.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . 5

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

1.1.1 Standard configuration . . . . . . . . . . . . . . . . . . 5

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

1.3 Functional specifications . . . . . . . . . . . . . . . . . . . 6

1.4 Physical dimensions . . . . . . . . . . . . . . . . . . . . . . 7

1.5 Seek ti me . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6 Multisegmented cache buffer . . . . . . . . . . . . . . . . . 7

1.7 Start and stop times . . . . . . . . . . . . . . . . . . . . . . 8

1.8 Typical power-up and power-down sequence . . . . . . . . . 8

1.9 Power-up sequence . . . . . . . . . . . . . . . . . . . . . 9

1.9.1 Power-down sequence . . . . . . . . . . . . . . . . . . 9

1.10 Auto-park . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.11 Power specifications . . . . . . . . . . . . . . . . . . . . . 9

1.11.1 Power management . . . . . . . . . . . . . . . . . . . 9

1.11.2 Power consumption . . . . . . . . . . . . . . . . . 11

1.12 Input noise . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.13 Environmental specifications . . . . . . . . . . . . . . . . 12

1.13.1 Ambient temperature . . . . . . . . . . . . . . . . . 12

1.13.2 Temperature gradient . . . . . . . . . . . . . . . . . 12

1.13.3 Altitude . . . . . . . . . . . . . . . . . . . . . . . . 12

1.13.4 Relative humidity . . . . . . . . . . . . . . . . . . . 12

1.14 Shock . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.14.1 Operating shock . . . . . . . . . . . . . . . . . . . . 12

1.14.2 Nonoperating shock . . . . . . . . . . . . . . . . . . 13

1.14.3 Operating vibration . . . . . . . . . . . . . . . . . . . 13

1.14.4 Nonoperating vibration . . . . . . . . . . . . . . . . . 13

iv Medalist 2520 Product Manual, Rev. A

1.15 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1.16 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1.17 Agency listings . . . . . . . . . . . . . . . . . . . . . . . 14

1.18 Electromagnetic compliance for the European Union . . . 14

1.19 FCC verification . . . . . . . . . . . . . . . . . . . . . . 1 5

2.0 Configuring and mounting the drive . . . . . . . . . . . . . 17

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

2.2 I/O cable and connector. . . . . . . . . . . . . . . . . . . 18

2.3 Power connector . . . . . . . . . . . . . . . . . . . . . . . 18

2.4 Options jumper block . . . . . . . . . . . . . . . . . . . . 19

2.4.1 Master/slave configuration . . . . . . . . . . . . . . 20

2.4.2 Alternate capacity jumper . . . . . . . . . . . . . . . . 21

2.4.3 Cable-select option . . . . . . . . . . . . . . . . . . . 21

2.4.4 Diagnostics jumper . . . . . . . . . . . . . . . . . . . 21

2.4.5 Life test jumper . . . . . . . . . . . . . . . . . . . . . 22

2.5 Mounting the drive . . . . . . . . . . . . . . . . . . . . . . 23

3.0 ATA interface . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.1 ATA Interface connector pin assignments . . . . . . . . . . 25

3.2 Command set . . . . . . . . . . . . . . . . . . . . . . . . 27

3.2.1 Identify Drive command (EC

3.2.2 Set Features command (EF

. . . . . . . . . . . . . 29

H)

) . . . . . . . . . . . . . 32

H

3.2.3 Standby timer timeout period . . . . . . . . . . . . . . 34

3.2.4 Sleep command (99

, E6H) . . . . . . . . . . . . . . 34

H

3.2.5 Automatic reallocation . . . . . . . . . . . . . . . . . 34

3.2.6 S.M.A.R.T. commands (B0

) . . . . . . . . . . . . . . 35

H

3.3 Synchronous DMA transfer . . . . . . . . . . . . . . . . . 36

3.3.1. Signal line definitions . . . . . . . . . . . . . . . . . . 36

3.3.2 Protocol rules . . . . . . . . . . . . . . . . . . . . . . 36

3.3.3 Error register . . . . . . . . . . . . . . . . . . . . . . 37

Appendix. Timing diagrams . . . . . . . . . . . . . . . . . . . . 39

Medalist 2520 Product Manual, Rev. A v

Figures

Figure 1. Typical startup current profile . . . . . . . . . . . . . . . . 8

Figure 2. ATA interface connector . . . . . . . . . . . . . . . . . 18

Figure 3. Connectors . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 4. Configuration settings . . . . . . . . . . . . . . . . . . . 20

Figure 5. Connecting cable-selected drives . . . . . . . . . . . . . 22

Figure 6. Mounting dimensions . . . . . . . . . . . . . . . . . . . 24

Figure 7. Ultra ATA interface connector pin assignments . . . . . . 26

Figure 8. Programmed I/O timing (with or without IORDY) . . . . . 39

Figure 9. Multiword DMA timing . . . . . . . . . . . . . . . . . . . 40

Figure 10. Sustained synchronous DMA burst . . . . . . . . . . . 41

vi Medalist 2520 Product Manual, Rev. A

Medalist 2520 Product Manual, Rev. A 1

Introduction

This manual describes the functional, mechanical and interface specifi­cations for the Medalist

®

2520 hard disc drive. This drive is referred to

throughout this manual by its model number, ST32520A.
Seagate

®

desktop products take a step into the future with the ST32520A.
The drive features advanced thin-film proximity heads and PRML record­ing technology, Ultr a ATA performance, segmented cache, embedded
servo technology, low noise, power management and S.M.A.R.T. capa­bilities.

Ultra ATA performance means that the drive supports PIO mode 4,
multiword DMA mode 2 transfer modes and synchronous DMA mode.
When the host chooses Ultra DMA mode 2, the drive pr ovides burst­transfer rates of up to 33.3 Mbytes per second. The drive supports
multiple block read/write, which allows it to store contiguous blocks of
data in its 256-Kbyte segmented cache and transfer the blocks in a single
burst.

The ST32520A has other features that ensure fast data throughput.
Embedded servo technology allow the drive to position the heads for data
retrieval efficiently and accurately while eliminating the periodic thermal
recalibration that can interrupt during data transfers. An intelligent con­troller provides dat a streaming: direct data transfers between t he drive
and the host without microprocessor intervention. These features allow
for a sustained data-transfer rate that facilitates video playback and other
multimedia operations.

The drive supports Active, Idle and Standby power-management modes.
Power-saving modes can be controll ed by the host c omputer. Standby
mode reduces power consumption to 1.618 watts (typical) while retaining
drive accessibility.

Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T.) is
available on the drive. This feature is discussed on page 35. To use the
feature, you must have a BIOS, a software driver or application software
that supports S.M.A.R.T.

The ATA commands with specific applications for the drive and the
Seagate-unique commands the drive uses are discussed in Section 3.0
on page 25. A complete list of the commands the drive supports is found
in the table on page 27.

2 Medalist 2520 Product Manual, Rev. A

The following is a summary of the drive’s features:

Capacity

• 2.5 Gbytes formatted

• LBA translation support

• Available software driver that surpasses the 528-Mbyte barrier and

4,092-cylinder barrier limited by some system BIOS

• Available software driver that provides expanded 32-bit disk access
support for Windows 3.

Performance

• Ultra ATA (burst transfer rates up to 33.3 Mbytes per second)

• Supports multiword DMA mode 2, PIO mode 4, Ultra DMA mode 2

and multiple block read/write

• 256-Kbyte segmented buffer

• 13-msec average read seek time

• 14.5-msec average write seek time

• Data streaming

x

• 5,411-RPM spindle speed

Energy efficiency

• Active, Idle and Standby power-management modes

• 1.618 watt typical power dissipation rating in Standby mode

Medalist 2520 Product Manual, Rev. A 3

Specification summary table

The following table serves as a quick reference for the ST32520A
performance specifications. These and other specifications are dis­cussed in “Specifications” on page 5.

Drive specification ST32520A

6

Guaranteed capacity (Mbytes) (×10

bytes)

2,521

Guaranteed sectors
Bytes per sector
Sectors per track
Logical read/write heads
Logical cylinders
Physical cylinders
Physical read/write heads
Physical discs
Areal density (Mbits per square inch)
Data zones
Recording density (bits per inch)
Track density (tracks per inch)
Spindle speed (RPM)
Track-to-tra ck see k tim e (msec ty p ica l)
Average read seek time (msec typical)

4,927,104

512

63

16
4,888
6,420

4
2

848

15

125–126K

6,660
5,411

2.5

13.0

Average write seek time (msec typical)
Full-stroke seek time (msec typical)
Average latency (msec)
Internal data-transfer rate

(Mbits per sec max)

continued

14.5
25

5.54

57 to 123

4 Medalist 2520 Product Manual, Rev. A

continued from previous page

Drive specification ST32520A

External transfer rate (Mbytes per sec max)

DMA mode 2
PIO mode
Synchronous DMA mode

16.6

16.6

33.3
Cache buffer (Kbytes)
ECC on-the-fly (bits max)

Height (inches max)
Width (inches max)
Depth (inches max)
Typical weight (lb)
Spinup current (max)
Seek power (typical)
Read/Write power and current (typical)
Idle total power (typical)

256
128

1.028

4.023

5.787

1.31

1.3A

4.99W

5.12W

4.45W

Standby total power (typical) 1.618W
Voltage tolerance (including noise): +5V

Voltage tolerance (including noise): +12V
Operating temperature (°C)

± 5%
± 5%

5° to 55°C

Medalist 2520 Product Manual, Rev. A 5

1.0 Specifications

1.1 Formatted capacity

The ST32520A drive supports cylinder-head-sector (CHS) and logical­block addressing (LBA) translation modes. You can use the Identify Drive
(ECH) command to verify the address modes the drive supports, the
number of cylinders, sectors per track, total number of sectors, heads
and other parameters. The Identify drive parameters are listed in Section

3.2.1 on page 29.

NNotes:

DOS and FAT 16 cannot access more than 2.147 Gbytes per

1.

partition. You must create multiple partitions to access the drive’s
full capacity.

One Mbyte equals one million bytes.

2.

If the system BIOS does not support more than 4,092 cylinders,

3.

it may cause the computer to hang during startup, or it may
truncate or wrap the cylinders. To resolve this issue, the system
BIOS needs to be modified: the cylinder register or variable must
be increased from 12 bits to 16 bits to accommodate more than
4,092 cylinders. See Section 2.4.2 on page 21.

1.1.1 Standard configuration

CHS Mode ST32520A

Cylinders 4,888
Heads 16
Sectors 63
Guaranteed sectors 4,927,104
Guaranteed capacity (Mbytes) 2,521

LBA Mode

When addressing the drive in LBA mode, all blocks (sectors) are con-

n

secutively numbered from 0 to

–1.

6 Medalist 2520 Product Manual, Rev. A

1.2 Physical organization

Read/write heads 4
Discs 2

1.3 Functional specifications

Interface Ultra ATA-4
Recording method PRML (16/17)
External data burst transfer rate:

DMA mode 2 (Mbytes/sec)
PIO mode 4 (Mbytes/sec)

Ultra DMA mode 2
Internal data-transfer rate (Mbits/sec) 57 to 123
Spindle speed (RPM) 5,411 ± 0.3%
Cache size (Kbytes) 256
Bytes per sector 512
Areal density (Mbits/sq. in) 848
Data zones 15
Recording density, max (BPI) 125–126K
Track density (TPI) 6,600

16.6

16.6

33.3

See Figure 8 on page 39 for PIO timing specifications. See Figure

Note.

9 on page 40 and Figure 10 on page 41 for DMA timing specifica-

tions.

Medalist 2520 Product Manual, Rev. A 7

1.4 Physical dimensions

The mounting dimensions are shown in Figure 6 on page 24.
Height, max 1.028 inch (26.1 mm)

Width, max 4.02 inches (102.1 mm)
Depth, max 5.787 inches (147mm)
Weight 1.31 lb (594 grams)

1.5 Seek time

Seek value is the interval between the time the actuator begins to move
and the time the head has settled over the target track. Seek time is a
true statistical average of at least 10,000 measurements of seek time.
All measurements are taken under nominal conditions of temperature
and voltage with the drive mounted horizontally. The specifications in the
table below are defined as follows:

• Track-to-track seek time is the average of all poss ible single-track
seeks in both directions.

• Average seek time is measured by executing seeks in both directions
between random cylinders.

• Full-stroke seek time is half the ti me needed to seek from track 0 to
the maximum track and back to track 0.

Track-to-track
seek time (typ)

2.5 msec seek

3.1 msec read

3.5 msec write

Host overhead varies between systems and cannot be specified.

Note.

Drive internal overhead is measured by issuing a no-motion seek.
Overhead is typically less than 0.5 msec.

Average/typical
seek time

11.5 msec seek

13.0 msec read

14.5 msec write

Full-stroke
seek time (typ)

25.0 msec seek

27.0 msec read

30.0 msec write

Average
latency

5.54

1.6 Multisegmented cache buffer

The ST32520A drive is available with a 256-Kbyte, multisegmented
cache buffer that improves performance by reducing access times.

Read look-ahead.

logical sectors, after t he last requested sector , into a buffer befor e the
computer requests the additional s ec tors . T he c ache buff er stor es data

The drive uses the read segments to store additional

8 Medalist 2520 Product Manual, Rev. A

from the start of a read until the buffer segment is full or until another
command is received.

Write immediate. The drive uses the write segment to store write
commands and data. After the drive receives all of the data for the
command, it issues a write com plete. Then, the drive writes the data to
the disc.

Write merging. The drive accepts contiguous write commands and
executes them as one command.

1.7 Start and stop times

Within 20 seconds after power is applied, the drive is ready. Within 15
seconds after power is removed, the drive spindle stops rotating.

1.8 Typical power-up and power-down sequence

This section describes typical power-up and power -down sequences to
assist you in evaluati ng the drive’s performance. They are not perform­ance specifications. A typical startup current profile is shown in Figure 1.

Current (Amps)

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0

0

2468

Time (seconds)

Figure 1. Typical star t up cur re nt profi le

10 12 14