seagate DECATHLON 1080, DECATHLON 851, DECATHLON 540 product manual

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Decathlon Family

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Decathlon 540, Decathlon 851

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Decathlon 1080

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ATA Interface Drives

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Product Manual

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Decathlon Family

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Decathlon 540, Decathlon 851

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Decathlon 1080

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ATA Interface Drives

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Product Manual

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trademarks of Seagate Technology, Inc. Decathlon is a trademark of Seagate Technology, Inc. Other product names are trademarks or registered 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.

Decathlon 540A, 851A and 1080A Product Manual, July 1995 iii

Contents

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Quick specification chart . . . . . . . . . . . . . . . . . . . . . . 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 time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

1.6 Start and stop times . . . . . . . . . . . . . . . . . . . . . . 7

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

1.7.1 Power-up sequence . . . . . . . . . . . . . . . . . . . . 8

1.7.2 Power-down sequence . . . . . . . . . . . . . . . . . . 9

1.7.3 Auto-park . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.8 Power specifications . . . . . . . . . . . . . . . . . . . . . . 9

1.8.1 Power consumption . . . . . . . . . . . . . . . . . . . . 9

1.8.2 Voltage tolerance . . . . . . . . . . . . . . . . . . . . 11

1.8.3 Input noise . . . . . . . . . . . . . . . . . . . . . . . . 11

1.9 Environmental specifications . . . . . . . . . . . . . . . . . 12

1.9.1 Ambient temperature . . . . . . . . . . . . . . . . . . 12

1.9.2 Temperature gradient . . . . . . . . . . . . . . . . . . 12

1.9.3 Altitude . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.9.4 Relative humidity . . . . . . . . . . . . . . . . . . . . 12

1.9.5 Shock and vibration . . . . . . . . . . . . . . . . . . . 12

1.10 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.11 Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1.12 Agency listings . . . . . . . . . . . . . . . . . . . . . . . 14

1.13 FCC verification . . . . . . . . . . . . . . . . . . . . . . . 15

iv Decathlon 540A, 851A and 1080A Product Manual, July 1995

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

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

2.2 I/O connector . . . . . . . . . . . . . . . . . . . . . . . . 18

2.3 Options jumper block . . . . . . . . . . . . . . . . . . . . . 18

2.3.1 Master/slave configuration . . . . . . . . . . . . . . . 21

2.3.2 Master/slave timing compatibility . . . . . . . . . . . . 21

2.3.3 Remote LED connection . . . . . . . . . . . . . . . . 21

2.3.4 Cable-select option . . . . . . . . . . . . . . . . . . . 22

2.4 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

3.2.3 Idle and Set Idle Timer (FA

3.2.4 Active and Set Idle Timer command (FB

) . . . . . . . . . . . . . 29

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

) . . . . . . . . . . . . . . 34

) . . . . . . . 34

Appendix. Timing diagrams . . . . . . . . . . . . . . . . . . . . 35

Decathlon 540A, 851A and 1080A Product Manual, July 1995 v

Figures

Figure 1. Typical +12V startup current profile . . . . . . . . . . . . 8

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

Figure 3. Drive connectors . . . . . . . . . . . . . . . . . . . . . 19

Figure 4. Options jumper block settings . . . . . . . . . . . . . . . 20

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

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

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

Figure 8. Programmed I/O timing without IORDY . . . . . . . . . . 35

Figure 9. Programmed I/O timing with IORDY . . . . . . . . . . . 36

Figure 10. Multiword DMA timing . . . . . . . . . . . . . . . . . . 37

Decathlon 540A, 851A and 1080A Product Manual, July 1995 1

Introduction

This manual describes the functional, mechanical and interface specifications for the Decathlon 540, 851 and 1080 hard disc drives. The drives are referred to throughout this manual by their model numbers: ST5540A for the Decathlon 540, ST5851A for the Decathlon 851 and ST51080A for the Decathlon 1080.

The Seagate ST5540A, ST5851A and ST51080A represent the third generation of Decathlon drives. They combine features used in the early Decathlon drives, such as Fast ATA-2 capability, 5,376-RPM spindle speed, embedded servo and the mini 3.5-inch footprint with new technology and more cost-efficient design to provide high performance, high capacity, low noise, energy-efficiency and superior value.

The drives are designed to ensure fast data-throughput between the drive and the host. Fast ATA-2 capability means that the drives support PIO mode 4 and multiword DMA mode 2 and multiple block read/write. When the host chooses either transfer mode, the drives respond with burst data-transfer rates of up to 16.6 Mbytes per second. Multiple block read/write allows the drive to gather several blocks of data in cache and transfers them in a single burst.

Other features the drives have that promote fast data-throughput include embedded servo technology to ensure quick and accurate access to information on the drive without thermal recalibration interruptions, a 16-bit internal microprocessor and an intelligent controller that provides data streaming—direct data transfers between the host and the drive without microprocessor intervention. These features increase the sustained data-transfer rate, facilitating video playback and other multimedia operations. Coupled with the 854-Mbyte capacity of the ST5851A and the 1.08-Gbyte capacity of the ST51080A (more than enough capacity to download a complete CD-ROM), you have a true multimedia-ready drive.

The drives support the power modes defined in the ATA-2 standard. Standby and Sleep modes reduce power consumption to a low 0.5 watts (typical). The drives enter power-saving modes at the request of the computer and can be programmed to automatically enter Idle or Standby modes. (A complete listing of the ATA commands the drives support is found in the table on page 27. The ATA commands that have Seagateunique applications and the Seagate-unique commands the drives use are discussed in Section 3.0 on page 25.)

The drives are designed for the standard 3.5-inch footprint but have a slim 0.75-inch (19-mm) height profile and a shorter 5.0-inch depth profile. Even though the overall size of the drives is reduced, the top and bottom mounting holes are placed in strict compliance with the SFF committee standards for the 3.5-inch form-factor. This size reduction gives the

2 Decathlon 540A, 851A and 1080A Product Manual, July 1995

designer or integrator more room for air circulation, other peripherals or a smaller drive bay. In addition, the smaller size and a redesigned top cover have improved the acoustics for the 5,376-RPM drive. The idle acoustic sound level is 30 dBA.

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

Capacity

• 540, 854 and 1080 Mbytes formatted

• One-disc and two-disc formats

• LBA translation support

• ECHS translation support

Performance

• Fast ATA-2. (Supports multiword DMA modes 0, 1, 2 and PIO modes 0, 1, 2, 3 and 4 for up to 16.6-Mbyte-per-second transfer rates. Supports multiple block read/write.)

• 5,376-RPM rotational speed

• 256-Kbyte segmented buffer

• 10.5-msec average seek time

• 16-bit microprocessor

• Data streaming

Energy efficiency

• Supports ATA-2 power-management modes: Active, Idle, Standby and Sleep

• 0.5 watt typical power dissipation rating in Standby and Sleep modes

Acoustics

• 30-dBA idle acoustic sound level

Decathlon 540A, 851A and 1080A Product Manual, July 1995 3

Quick specification chart

The following table serves as a quick reference of performance specifications for these drives. These and other specifications are discussed in the Specification summary section following the table.

Drive specification ST5540A ST5851A ST51080A

Formatted capacity (Mbytes) (×10 Total sectors 1,058,400 1,669,248 2,116,800 Bytes per sector 512 512 512 Logical cylinders 1,050 1,656 2,100 Sectors per track 63 63 63 Logical read/write heads 16 16 16 Physical read/write heads 2 4 4 Physical disc 1 2 2 Physical cylinders 4,834 Recording density (Kbits per inch) 76.2 Track density (tracks per inch) 4,800 Spindle speed (RPM) 5,376 Average latency (msec) 5.58 Track-to-track seek time (msec typical) 2.0 Average seek time (msec typical) 10.5 Full-stroke seek time (msec typical) 20.0 Internal data-transfer rate (Mbits per sec max) 34.5 to 67.7

Ext. transfer rate Ext. transfer rate Cache buffer (Kbytes) 256 Height, inches max (mm) 0.748 (19.0) Width, inches max (mm) 4.01 (102.8) Depth, inches max (mm) 5.00 (127.0) Typical weight, lb (g) 0.750 (320.2) Power-on to ready (sec typical) 8 Spinup current (typical) 1.1A Seek power (typical) 6.37W

(Mbytes per sec) PIO mode 4 16.6

(Mbytes per sec) DMA mode 2 16.6

bytes) 541.9 854.7 1,083.8

continued

1. External transfer rates are based on the ATA-2 standard. Actual performance may exceed the standard. See your Seagate representative for details.

4 Decathlon 540A, 851A and 1080A Product Manual, July 1995

continued from previous page

Drive specification ST5540A ST5851A ST51080A

Read/Write power and current (typical) 4.9W Idle total power (typical) 3.0W Standby/Sleep total power (typical) 0.5W Voltage tolerance (including noise): +5V ±5% Voltage tolerance (including noise): +12V ±5% Operating temperature (°C) 5° to 55°C Nonoperating temperature (°C) –40° to 70°C Operating temperature gradient (°C per hour max) 20°C Relative humidity, operating gradient (max) 10% per hr Altitude operating –1,000 to 10,000 ft. Altitude nonoperating –1,000 to 40,000 ft. Shock, normal operating (Gs max for 11 msec) 2 Gs Shock, abnormal operating (Gs max for 11 msec) 10 Gs Vibration (Gs max at 22–350 Hz without nonre-

coverable errors), operating Vibration (Gs max at 22–350 Hz with no physical

damage incurred), nonoperating Drive acoustics, Idle mode (dBA) 30 dBA Drive acoustics, seeking (dBA) 34 dBA Nonrecoverable read errors (per bits transferred) 10 Mean time between failures (power-on hours) 300,000 Contact start-stop cycles 40,000 Service life (years) 5

0.75 Gs

0 to Peak

4 Gs

0 to Peak

Decathlon 540A, 851A and 1080A Product Manual, July 1995 5

1.0 Specifications

Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, at sea level and nominal power.

1.1 Formatted capacity

Decathlon drives are low-level formatted at the factory. You cannot low-level format them.

You can operate the drive using many different address configurations, provided the number of sectors per track does not exceed 63. The following tables show ECHS and LBA translation geometries for the standard configurations. You can verify the parameters using the Identify Drive (EC

1.1.1 Standard configuration

) command.

ST5540A

ECHS LBA

Cylinders 1,050 N/A Heads 16 N/A Sectors 63 N/A Total sectors 1,058,400 1,058,400 Formatted capacity (bytes

) 541,900,800 541,900,800

ST5851A ECHS LBA

Cylinders 1,656 N/A Heads 16 N/A Sectors 63 N/A Total sectors 1,669,248 1,669,248 Formatted capacity (bytes

) 854,654,976 854,654,976

2. One Mbyte equals one million bytes.

6 Decathlon 540A, 851A and 1080A Product Manual, July 1995

ST51080A ECHS LBA

Cylinders 2,100 N/A Heads 16 N/A Sectors 63 N/A Total sectors 2,116,800 2,116,800 Formatted capacity (bytes

) 1,083,801,600 1,083,801,600

1.2 Physical organization

ST5540A ST5851A ST51080A

Read/write heads 2 4 4 Discs 1 2 2

1.3 Functional specifications

Interface ATA-2 Zone Bit Recording method RLL (1,7) External data burst-transfer rate:

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

Internal data-transfer rate (Mbits per sec)

Inner track 34.5 Outer track 67.7

Spindle speed (RPM) 5,376 ± 0.5% Cache size (Kbytes) 256 Physical cylinders 4,834 Bytes per sector 512 Recording density, max (KBPI) 76.2 Track density (TPI) 4,800

16.6

3. See Figure 10 on page 37 for timing specifications.

4. See Figure 9 on page 36 for timing specifications.

Decathlon 540A, 851A and 1080A Product Manual, July 1995 7

1.4 Physical dimensions

The mounting dim ensions are shown in Figure 6 on page 24. Height, max 0.748 inches (19.0 mm)

Width, max 4.02 inches (102.1 mm) Depth, max 5.00 inches (127.0 mm) Weight 0.750 lb (340.2 g)

1.5 Seek time

Seek time is the interval between the time the actuator begins to move and the time the head is over the target track. Seek time is a true statistical average of at least 10,000 measurements of seek time. All measurements for maximum values 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 possible 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 time needed to seek from track 0 to the maximum track and back to track 0.

Track-to-track

seek time

2.0 msec typ 10.5 msec

Average/typical

seek time

Full-stroke

seek time

Average

latency

20.0 msec typ 5.58 msec

Note.Host overhead varies between systems and cannot be specified.

Drive internal overhead is measured by issuing a no-motion seek. Overhead is typically less than 1.0 msec.

1.6 Start and stop times

The drive is ready within 8 seconds after the power is applied. The drive spindle stops rotating within 7 seconds typical after the power is removed.

5. When measured on a 66 MHz, 486DX AT computer with a 8.33 MHz I/O Bus while executing PC Labs or Core test with Smartdrive.

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