Seagate MEDIALIST 1270 Product manual

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Medalist 1270

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ATA Interface Drive

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Product Manual

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Medalist 1270

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ATA Interface Drive

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Product Manual

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trademarks of Seagate Technology, Inc. Medalist 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.

Medalist 1270 Product Manual, August 1995 iii

Contents

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

Quick specification chart . . . . . . . . . . . . . . . . . . . . . . 2

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

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

1.1.1 528-Mbyte capacity barrier . . . . . . . . . . . . . . . . 5

1.2 Standard configuration . . . . . . . . . . . . . . . . . . . . 6

1.3 Dual-drive emulation configuration . . . . . . . . . . . . . . 6

1.4 Physical organizat ion . . . . . . . . . . . . . . . . . . . . . 6

1.5 Functional specifications . . . . . . . . . . . . . . . . . . . 7

1.6 Physical dimens ions . . . . . . . . . . . . . . . . . . . . . . 7

1.7 Seek time . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1.7.1 Multisegmented cache buffer . . . . . . . . . . . . . . . 8

1.8 Start/stop time . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.9 Typical power-up and power-down sequence . . . . . . . . . 9

1.9.1 Power-up sequence . . . . . . . . . . . . . . . . . . . 9

1.9.2 Power-down sequence . . . . . . . . . . . . . . . . . 10

1.10 Auto-park . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.11 Power specifications . . . . . . . . . . . . . . . . . . . . 10

1.11.1 Power management . . . . . . . . . . . . . . . . . . 10

1.11.2 Power consumption . . . . . . . . . . . . . . . . . . 12

1.12 Input noise . . . . . . . . . . . . . . . . . . . . . . . . . 12

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

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

1.13.2 Temperature gradient . . . . . . . . . . . . . . . . . 13

1.13.3 Altitude . . . . . . . . . . . . . . . . . . . . . . . . 13

1.13.4 Relative humidity . . . . . . . . . . . . . . . . . . . 13

1.14 Shock and vibration . . . . . . . . . . . . . . . . . . . . 13

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

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

iv Medalist 1270 Product Manual, August 1995

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

1.18 FCC verification . . . . . . . . . . . . . . . . . . . . . . 14

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 The options jumper block (J8) . . . . . . . . . . . . . . . . 19

2.4.1 Master/slave configuration . . . . . . . . . . . . . . . 19

2.4.2 Dual-Drive emulation . . . . . . . . . . . . . . . . . . 19

2.4.3 Remote LED . . . . . . . . . . . . . . . . . . . . . . 22

2.4.4 Cable-select . . . . . . . . . . . . . . . . . . . . . . 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

) . . . . . . . . . . . . . 31

3.2.3 Standby timer timeout period . . . . . . . . . . . . . . 33

3.2.4 Sleep command (99

, E6H) . . . . . . . . . . . . . . 33

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

Medalist 1270 Product Manual, August 1995 v

Figures

Figure 1. Typical startup current profile . . . . . . . . . . . . . . . . 9

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

Figure 3. Connectors . . . . . . . . . . . . . . . . . . . . . . . . 20

Figure 4. Configuration settings . . . . . . . . . . . . . . . . . . . 21

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

Medalist 1270 Product Manual, August 1995 1

Introduction

This manual describes the functional, mechanical and interface specifications for the Medalist 1270 hard disc drive. The Medalist 1270 is referred to throughout this manual by its model number, ST31270A.

The ST31270A is a 1.2-Gbyte drive that features Fast ATA-2 performance, technology to smooth data flow and power management.

Fast ATA-2 performance means that the drive supports PIO mode 4 and multiword DMA mode 2 transfer modes and multiple block read/write. When the host chooses either transfer mode, the drive provides bursttransfer 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.

The drive uses a 256-Kbyte segmented cache and embedded servo technology to smooth data flow. The 256-Kbyte segmented cache provides a designated area where blocks of contiguous read or write data can be staged for transfer in a single burst. The embedded servo allows for accurate head positioning and eliminates periodic thermal recalibration for data transfers without interruption.

The drive supports Active, Idle and Standby power-management modes. Power-saving modes are entered by request of the computer. Standby mode reduces power consumption to 1 watt (typical) while retaining drive accessibility. (The power-management and other ATA commands the drive supports are listed on pages 27 and 28. Commands with specific applications for the drive are discussed in Section 3.0 on page 25.)

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

Capacity

• 1,282.8 Mbytes formatted

• LBA translation support

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

posed by some BIOSs

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

2 Medalist 1270 Product Manual, August 1995

Performance

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

• 256-Kbyte segmented buffer

• 12-msec average seek time

Energy efficiency

• Active, Idle and Standby power-management modes

• 1 watt typical power dissipation rating in Standby mode

Acoustics

• 30-dBA typical idle acoustic sound-pressure level

Quick specification chart

The following table serves as a quick reference for the ST31270A performance specifications. These and other specifications are discussed in “Specifications” on page 5.

Drive specification ST31270A

Formatted capacity (Mbytes) (×10 Total sectors 2,505,528 Bytes per sector 512 Sectors per track 63 Logical Read/Write heads 16 Physical cylinders 3,876 Physical Read/Write heads 6 Physical disc 3 Recording density (bits per inch) 73,530 Track density (tracks per inch) 4,250 Spindle speed (RPM) 4,500 Track-to-track seek time (msec typical) 3.5 Average seek time (msec typical) 12 Full-stroke seek time (msec typical) 25.0

bytes) 1,282.8

Medalist 1270 Product Manual, August 1995 3

Drive specification ST31270A

Average latency (msec) 6.67 Internal-data transfer rate (Mbits per sec max) 29.6 to 57.2 External transfer rate (Mbytes per sec max) 16.6 Cache buffer (Kbytes) 256 Height (inches max) 1.00 Width (inches max) 4.02 Depth (inches max) 5.77 Typical weight (lb) 1.5 Spinup current (typical) 1.9A Seek power (typical) 6.60W Read/Write power and current (typical) 4.50W Idle total power (typical) 2.75W Standby/Sleep total power (typical) 1.0W Voltage tolerance (including noise): +5V ±5% Voltage tolerance (including noise): +12V ±5% Operating temperature (°C) 5 to 55°C Drive acoustics, Idle mode (dBA) 30 dBA Drive acoustics, seeking (dBA) 34 dBA

Medalist 1270 Product Manual, August 1995 5

1.0 Specifications

1.1 Formatted capacity

The drive was low-level formatted at the factory. You cannot low-level format it.

The drive was configured in translation mode at the factory. It supports cylinder-head-sector addressing (CHS) and logical-block addressing (LBA) modes. You can use the Identify Drive (EC the address modes the drive supports, the number of cylinders, sectors per track, total number of sectors, heads and other drive parameters. The Identify Drive parameters are listed in Section 3.2.1 on page 29.

1.1.1 528-Mbyte capacity barrier

Computers using some BIOSs impose a 528-Mbyte barrier on the hard disc drive. The BIOS in these systems use a CHS addressing scheme that does not acknowledge more than 1,024 cylinders in the translation geometry. To access the drive’s entire capacity, you must:

• Use a BIOS that acknowledges more than 1,024 cylinders or uses LBA.

) command to verify

• Use a host adapter that accepts more than 528 Mbytes.

• Use a software driver that surpasses the 528-Mbyte barrier to install

the drive. Note. A Seagate driver that surpasses the 528-Mbyte barrier is

available. Ask your Seagate representative for details.

• Use the dual-drive emulation option available on the drive. This option makes the drive two logical drives for the computer. Both drive-type parameters are configured in the CMOS and each logical drive is partitioned and formatted independently. However, you can use only the maximum translation-geometry values the BIOS permits—1,024 cylinders, 16 heads and 63 sectors. This restricts each logical drive to less than 528 Mbytes.

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1.2 Standard configuration

CHS LBA

Cylinders 2,485 N/A Heads 16 N/A Sectors 63 N/A Total sectors 2,504,880 2,505,528 Formatted capacity (Mbytes

) 1,282.4 1,282.8

1.3 Dual-drive emulation configuration

Dual-drive emulation makes the drive look like two logical drives to the computer. Enter translation geometries for both drive-type parameters in the CMOS. Partition and format each logical drive. Use the maximum translation geometry values allowed by the BIOS to configure the CMOS. Use the translation geometry values in the table below to configure the CMOS. These values provide each logical drive with 527.6 Mbytes.

A second, physical drive cannot be installed on the same port when dual-drive emulation is used. Dual-drive emulation does not support cable-select. Also, the drive responds as a single drive to power-management commands.

CHS LBA

Cylinders 1,024 N/A Heads 16 N/A Sectors 63 N/A Total sectors 1,032,192 Formatted capacity (Mbytes

) 527.6

1.4 Physical organization

ST31270A

Read/write heads 6 Discs 3

1. One Mbyte equals one million bytes.

Medalist 1270 Product Manual, August 1995 7

1.5 Functional specifications

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

16.6

DMA mode 2 (Mbytes per sec) External data burst transfer rate

16.6

PIO mode 4 (Mbytes per sec) Internal data-transfer rate

29.62 to 57.25

(Mbits per sec) Spindle speed (RPM) 4,500 ± 0.5% Cache size (Kbytes) 256 Physical cylinders 3,876 Bytes per sector 512 Recording density, max (BPI) 73,530 Track density (TPI) 4,250

1.6 Physical dimensions

The mounting dim ensions are shown in Figure 6 on page 24. Height, max 1.00 inch (25.4 mm)

Width, max 4.02 inches (102.1 mm) Depth, max 5.77 inches (146.6 mm) Weight 1.5 lb (0.68 Kg)

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

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

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