Maxtor 81750A2 Specifications

DiamondMax™ 1750

87000A8, 86480A8, 85250A6

84320A5, 83500A4, 83240A4

82560A3, 81750A2

Part #1370/C

All material contained herein Copyright © 1997 Maxtor Corporation.

CrystalMax™, CrystalMax™ 1080, DiamondMax™, DiamondMax™

1750 and MaxFax™ are trademarks of Maxtor Corporation. No Quibble ®

Service is a registered trademark of Maxtor Corporation. Other brands or products are trademarks or registered trademarks of their respective holders.

Contents and specifications subject to change without notice. All rights reserved. Printed in the U.S.A. 6/97

Corporate Headquarters

510 Cottonwood Drive

Milpitas, California 95035

Tel: 408-432-1700

Fax: 408-432-4510

Research and Development

Engineering Center

2190 Miller Drive

Longmont, Colorado 80501

Tel: 303-651-6000

Fax: 303-678-2165

Revisions

REV EC NO.

SECTION

A

B

C

78444

78512

78533

All

DESCRIPTION

Initial release

Manual No. 1370

2 - 4 Model number changed from 85120A6 to 85250A6; track, flux and recording density specifications modified; tracks per surface and sectors per drive increased; logical head count changed from 16 to 15.

2, 3, 5 and 7 Removed all reference to Ultra DMA support; non-operational shock specification upgraded from 150 Gs to 200 Gs; noted lower power consumption specifications.

DATE

04/15/97

05/30/97

06/10/97

Before You Begin

Thank you for your interest in the Maxtor DiamondMax™ 1750 AT hard disk drives. This manual provides technical information for OEM engineers and systems integrators regarding the installation and use of the 87000A8, 86480A8,

85250A6, 84320A5, 83500A4, 83240A4, 82560A3 and 81750A2.

Drive repair should be performed only at an authorized repair center. For repair information, contact the

Maxtor Customer Service Center at 800-2MAXTOR or 408-432-1700.

Before unpacking the hard drive, please review Sections 1 through 4.

C A U T I O N

Maxtor DiamondMax 1750 hard drives are precision products. Failure to follow these precautions and guidelines outlined here may lead to product failure, damage and invalidation of all warranties.

1

BEFORE unpacking or handling a drive, take all proper electro-static discharge (ESD) precautions, including personnel and equipment grounding. Stand-alone drives are sensitive to ESD damage.

2

BEFORE removing drives from their packing material, allow them to reach room temperature.

3

During handling, NEVER drop, jar, or bump a drive.

4

Once a drive is removed from the Maxtor shipping container, IMMEDIATELY secure the drive through its mounting holes within a chassis. Otherwise, store the drive on a padded, grounded, antistatic surface.

5

NEVER switch DC power onto the drive by plugging an electrically live DC source cable into the drive's connector. NEVER connect a live bus to the drive's interface connector.

Please do not remove or cover up Maxtor factory-installed drive labels.

They contain information required should the drive ever need repair.

DIAMONDMAX 1750 PRODUCT MANUAL

Contents

Section 1 — Introduction

Maxtor Corporation

Products

Support

Manual Organization

Abbreviations

Conventions

Key Words

Numbering

Signal Conventions

Section 2 — Product Description

The 87000A8, 86480A8, 85250A6, 84320A5, 83500A4,

83240A4, 82560A3 and 81750A2

Product Features

Functional/Interface

Zone Density Recording

Read/Write Multiple Mode

Multi-word DMA (EISA Type B) - Mode 2

Sector Address Translation

Logical Block Addressing

Defect Management Zone

On-the-Fly Hardware Error Correction Code (ECC)

Software ECC Correction

Automatic Head Park and Lock Operation

Cache Management

Buffer Segmentation

Read-Ahead Mode

Automatic Write Reallocation (AWR)

Write Cache Stacking

Major HDA Components

Drive Mechanism

Rotary Actuator

Read/Write Electronics

Read/Write Heads and Media

Air Filtration System

Microprocessor

Subsystem Configuration

Dual Drive Support

Cable Select Option

Jumper Location/Configuration

4092 Cylinder Limitation

Section 3 — Product Specifications

Configuration

Performance

Physical Dimensions

Power Requirements

Power Mode Definitions

Environmental

Shock and Vibration

Reliability and Maintenance

Data Reliability iv

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2 - 3

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3 - 1

3 - 2

3 - 3

3 - 3

3 - 3

3 - 4

3 - 4

3 - 4

3 - 1

Acoustic Noise

EPA Energy Star Compliance

EMC/EMI

Standard Test Methods

Safety Regulatory Compliance

Section 4 — Handling and Installation

Pre-formatted Drive

Important Notice

Hard Drive Handling Precautions

Electro-Static Discharge (ESD)

Unpacking and Inspection

Repacking

Physical Installation

Drive Jumper Settings

Mounting Drive in System

Attaching IDE Interface and Power Cables

Attaching System Cables

System Setup

Hard Drive Preparation

Section 5 — AT Interface Description

Interface Connector

Pin Description Summary

Pin Description Table

PIO Timing

DMA Timing

Section 6 — Host Software Interface

Task File Registers

Data Register

Error Register

Features Register

Sector Count Register

Sector Number Register

Cylinder Number Registers

Device/Head Register

Status Register

Command Register

Read Commands

Write Commands

Mode Set/Check Commands

Power Mode Commands

Initialization Commands

Seek, Format, and Diagnostic Commands

S.M.A.R.T. Commands

Summary

Control Diagnostic Registers

Alternate Status Register

Device Control Register

Digital Input Register

Reset and Interrupt Handling


3 - 4

3 - 4

3 - 5

3 - 5

3 - 5

4 - 1

4 - 1

4 - 1

4 - 1

4 - 2

4 - 3

4 - 3

4 - 4

4 - 4

4 - 6

4 - 7

4 - 8

4 - 10

5 - 1

5 - 1

5 - 2

5 - 3

5 - 4

6 - 2

6 - 3

6 - 3

6 - 3

6 - 3

6 - 3

6 - 3

6 - 3

6 - 3

6 - 1

6 - 1

6 - 1

6 - 1

6 - 2

6 - 2

6 - 2

6 - 2

6 - 5

6 - 5

6 - 5

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6 - 6

6 - 4 v


Section 7 — Interface Commands

Command Summary

Read Commands

Read Sector(s)

Read Verify Sector(s)

Read Sector Buffer

Read DMA

Read Multiple

Set Multiple

Write Commands

Write Sector(s)

Write Verify Sector(s)

Write Sector Buffer

Write DMA

Write Multiple

Set Feature Commands

Set Features Mode

Power Mode Commands

Standby Immediate

Idle Immediate

Standby

Idle

Check Power Mode

Set Sleep Mode

Default Power-on Condition

Initialization Commands

Identify Drive

Initialize Drive Parameters

Seek, Format, and Diagnostic Commands

S.M.A.R.T. Command Set

Section 8 — Service and Support

Service Policy

No Quibble Service

Support

Glossary

Glossary

7 - 3

7 - 4

7 - 4

7 - 4

7 - 4

7 - 5

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7 - 5

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7 - 1

7 - 2

7 - 2

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GL - 1 vi

Figures

Figure

2 - 1

3 - 1

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4 - 4

4 - 5

4 - 6

4 - 7

4 - 8

4 - 9

4 - 10

4 - 11

5 - 1

5 - 2

5 - 3

Title

PCBA Jumper Locations and Configuration

Outline and Mounting Dimensions

Multi-pack Shipping Container

Single-pack Shipping Container (Option A)

Single-pack Shipping Container (Option B)

Master/Slave Jumper Detail

5.25-inch Mounting Brackets/Slider Rails

5.25-inch Installation


IDE Interface and Power Cabling Detail

System Interface Card Cabling

System Mother Board Cabling

J46 (4092 Cylinder Limitation) Detail

Data Connector

PIO Data Transfer to/from Device

Multi-word DMA Data Transfer


Page

2 - 6

3 - 2

4 - 2

4 - 3

4 - 3

4 - 4

4 - 4

4 - 5

4 - 5

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4 - 7

4 - 7

4 - 9

5 - 1

5 - 3

5 - 4 vii

DIAMONDMAX 1750 – INTRODUCTION

SECTION 1

Introduction

Maxtor Corporation

Maxtor Corporation has been providing high-quality computer storage products since 1982. Along the way, we’ve seen many changes in data storage needs. Not long ago, only a handful of specific users needed more than a couple hundred megabytes of storage. Today, downloading from the Internet and CD-ROMs, multimedia, networking and advanced office applications are driving storage needs even higher. Even home PC applications need capacities measured in gigabytes, not megabytes.

Products

Maxtor’s products meet those demanding storage capacity requirements with room to spare. They feature proven compatibility and reliability. While DiamondMax™ 1750 is the latest addition to our family of high performance desktop hard drives, the CrystalMax™ and CrystalMax™ 1080 series hard drives deliver industry-leading capacity and value for most PC applications.

Support

No matter which capacity, all Maxtor hard drives are supported by our commitment to total customer satisfaction and our

No Quibble ® Service guarantee. One call – or a visit to our home page on the Internet (http://www.maxtor.com) – puts you in touch with either technical support or customer service. We’ll provide you the information you need quickly, accurately and in the form you prefer – a fax, a downloaded file or a conversation with a representative.

Manual Organization

This hard disk drive reference manual is organized in the following method:

❏ Section 1 – Introduction

❏ Section 2 – Description

❏ Section 3 – Specifications

❏ Section 4 – Installation

❏ Section 5 – AT Interface

❏ Section 6 – Host Software Interface

❏ Section 7 – Interface Commands

❏ Section 8 – Service and Support

❏ Appendix – Glossary

Abbreviations

GB

Hz

KB

ABBRV

ATA bpi

CHS db dBA

DMA

ECC fci

G

LBA

LSB mA

DESCRIPTION

AT attachment bits per inch cylinder - head - sector decibels decibels, A weighted direct memory access error correction code flux changes per inch acceleration gigabyte hertz kilobyte logical block address least significant bit milliamperes

RPM tpi

µsec

V

W

ABBRV

MB

Mbits/sec

MB/sec

MHz ms

MSB mV ns

PIO

DESCRIPTION megabyte megabits per second megabytes per second megahertz millisecond most significant bit millivolts nanoseconds programmed input/output revolutions per minute tracks per inch microsecond volts watts

1 – 8

DIAMONDMAX 1750 – INTRODUCTION

Conventions

If there is a conflict between text and tables, the table shall be accepted as being correct.

Key Words

The names of abbreviations, commands, fields and acronyms used as signal names are in all uppercase type (e.g.,

IDENTIFY DRIVE). Fields containing only one bit are usually referred to as the “name” bit instead of the “name” field.

Names of drive registers begin with a capital letter (e.g., Cylinder High register).

Numbering

Numbers that are not followed by a lowercase “b” or “h” are decimal values. Numbers that are followed by a lowercase

“b” (e.g., 01b) are binary values. Numbers that are followed by a lowercase “h” (e.g., 3Ah) are hexadecimal values.

Signal Conventions

Signal names are shown in all uppercase type.

All signals are either high active or low active signals. A dash character (-) at the end of a signal name indicates that the signal is low active. A low active signal is true when it is below ViL and is false when it is above ViH. A signal without a dash at the end indicates that the signal is high active. A high active signal is true when it is above ViH and is false when it is below ViL.

When a signal is asserted, it means the signal is driven by an active circuit to its true state.

When a signal is negated, it means the signal is driven by an active circuit to its false state.

When a signal is released, it means the signal is not actively driven to any state. Some signals have bias circuitry that pull the signal to either a true or false state when no signal driver is actively asserting or negating the signal. These instances are noted under the description of the signal.

1 – 9

PRODUCT DESCRIPTION

SECTION 2

Product Description

Maxtor DiamondMax™ 1750 AT disk drives are 1-inch high, 3.5-inch diameter random access storage devices which incorporate an on-board Enhanced IDE/ATA controller. High capacity is achieved by a balanced combination of high areal recording density and the latest data encoding and servo techniques.

Maxtor's latest advancements in electronic packaging and integration methods have lowered the drive's power consumption and increased its reliability. Advanced magneto-resistive read/write heads, an state-of-the-art head/disk assembly using an integrated motor/spindle design allow up to four disks in a 3.5-inch package.

Exceptionally high data transfer rates and sub 10 ms access times make these performance series disk drives especially well-suited to high speed desktop and server applications.

DiamondMax 1750 Key Features

ANSI ATA-4 compliant PIO Mode 4 interface (Enhanced IDE)

256 KB buffer with multi-adaptive cache manager

< 10 ms seek time

Zone density and I.D.-less recording

High reliability with

>

500,000 hour MTBF

Outstanding shock resistance at 200 Gs

High durability with 50K constant start/stop cycles

Advanced multi-burst on-the-fly Error Correction Code (ECC)

Extended data integrity with ECC protected data and fault tolerant servo synchronization fields

Supports EPA Energy Star Standards (Green PC Friendly) with ATA powering savings commands

Auto park and lock actuator mechanism

Low power consumption

S.M.A.R.T. Capability

Note: Maxtor defines one megabyte as 10 6 or one million bytes and one gigabyte as 10 9 or one billion bytes.

2 – 10

PRODUCT DESCRIPTION

Product Features

Functional / Interface

Maxtor DiamondMax™ 1750 hard drives contain all necessary mechanical and electronic parts to interpret control signals and commands from an AT-compatible host computer. See Section 3, Product Specifications, for complete drive specifications.

Zone Density Recording

The disk capacity is increased with bit density management – common with Zone Density Recording. Each disk surface is divided into 16 circumferential zones. All tracks within a given zone contain a constant number of data sectors. The number of data sectors per track varies in different zones; the outermost zone contains the largest number of data sectors and the innermost contains the fewest.

Read/Write Multiple Mode

This mode is implemented per ANSI ATA/ATAPI-4 specification. Read/Write Multiple allows the host to transfer a set number of sectors without an interrupt request between them, reducing transfer process overhead and improving host performance.

Multi-word DMA (EISA Type B) - Mode 2

Supports multi-word Direct Memory Access (DMA) EISA Type B mode transfers.

Sector Address Translation

All DiamondMax 1750 drives feature a universal translate mode. In an AT/EISA-class system, the drive may be configured to any specified combination of cylinders, heads and sectors (within the range of the drive's formatted capacity).

DiamondMax 1750 drives power-up in a translate mode:

MODEL

87000A8

86480A8

85250A6

84320A5

83500A4

83240A4

82560A3

81750A2

CYLINDERS

14,475

13,392

10,856

8,928

7,237

6,696

5,292

3,618

HEADS

15

15

15

15

15

15

15

15

SECTORS

63

63

63

63

63

63

63

63

CAPACITY

7,000 MB

6,480 MB

5,250 MB

4,320 MB

3,500 MB

3,240 MB

2,560 MB

1,750 MB

Logical Block Addressing

The Logical Block Address (LBA) mode can only be utilized in systems that support this form of translation. The cylinder, head and sector geometry of the drive, as presented to the host, differs from the actual physical geometry.

The host AT computer may access a drive of set parameters: number of cylinders, heads and sectors per track, plus cylinder, head and sector addresses. However, the drive can’t use these host parameters directly because of zoned recording techniques. The drive translates the host parameters to a set of logical internal addresses for data access. The host drive geometry parameters are mapped into an LBA based on this formula:

LBA where

= (HSCA - 1) + HHDA x HSPT + HNHD x HSPT x HCYA (1)

= (HSCA - 1) + HSPT x (HHDA + HNHD x HCYA) (2)

HSCA = Host Sector Address, HHDA = Host Head Address, HCYA = Host Cylinder Address, HNHD = Host Number of Heads

HSPT = Host Sectors per Track

The LBA is checked for violating the drive capacity. If it does not, the LBA is converted to physical drive cylinder, head and sector values. The physical address is then used to access the data stored on the disk and other drive related operations.

2 – 11

PRODUCT DESCRIPTION

Defect Management Zone (DMZ)

Each drive model has a fixed number of spare sectors per drive, all of which are located at the end of the drive. Upon detection of a bad sector that has been reassigned, the next sequential sector is used.

For example, if sector 3 is flagged, data that would have been stored there is “pushed down” and recorded in sector 4.

Sector 4 then effectively becomes sector 3, as sequential sectors are “pushed down” across the entire drive. The first spare sector makes up for the loss of sector 3, and so maintains the sequential order of data. This push down method assures maximum performance.

On-the-Fly Hardware Error Correction Code (ECC)

10 bits, single burst, guaranteed

Software ECC Correction

64 bits, single burst, guaranteed; 28 bits, double bursts, guaranteed

Automatic Park and Lock Operation

Immediately following power down, dynamic braking of the spinning disks delays momentarily allowing the read/write heads to move to an inner mechanical stop. A small fixed magnet holds the rotary actuator in place as the disk spins down.

The rotary actuator is released only when power is again applied.

Cache Management

Buffer Segmentation

The data buffer is organized into two segments: the data buffer and the micro controller scratch pad. The data buffer is dynamically allocated for read and write data depending on the commands received. A variable number of read and write buffers may exist at the same time.

Read-Ahead Mode

Normally, this mode is active. Following a read request, disk read-ahead begins on the first sector and continues sequentially until the allocated buffer is full. If a read request is received during the read-ahead operation, the buffer is examined to determine if the request is in the cache. If a cache hit occurs, read-ahead mode continues without interruption and the host transfer begins immediately.

Automatic Write Reallocation (AWR)

This feature is part of the write cache and reduces the risk of data loss during deferred write operations. If a disk error occurs during the disk write process, the disk task stops and the suspect sector is reallocated to a pool of alternate sectors located at the end of the drive. Following reallocation, the disk write task continues until it is complete.

Write Cache Stacking

Normally, this mode is active. Write cache mode accepts the host write data into the buffer until the buffer is full or the host transfer is complete. A command complete interrupt is generated at the end of the transfer.

A disk write task begins to store the host data to disk. Host write commands continue to be accepted and data transferred to the buffer until either the write command stack is full or the data buffer is full. The drive may reorder write commands to optimize drive throughput.

2 – 12

PRODUCT DESCRIPTION

Major HDA Components

Drive Mechanism

A brush-less DC direct drive motor rotates the spindle at 5,200 RPM (±0.1%). The dynamically balanced motor/spindle assembly ensures minimal mechanical run-out to the disks. A dynamic brake provides a fast stop to the spindle motor upon power removal. The speed tolerance includes motor performance and motor circuit tolerances.

Rotary Actuator

All DiamondMax™ 1750 drives employ a rotary voice coil actuator which consists of a moving coil, an actuator arm assembly and stationary magnets. The actuator moves on a low-mass, low-friction center shaft. The low friction contributes to fast access times and low power consumption.

Read/Write Electronics

An integrated circuit mounted within the sealed head disk assembly (near the read/write heads) provides up to eight head selection (depending on the model), read pre-amplification and write drive circuitry.

Read/Write Heads and Media

Low mass, low force magneto-resistive read/write heads record data on 3.5-inch diameter disks. Maxtor uses a sputtered thin film medium on all disks for DiamondMax 1750 drives.

Air Filtration System

All DiamondMax 1750 drives are assembled in a Class 100 controlled environment. Over the life of the drive, a 0.1

micron filter and breather filter located within the sealed head disk assembly (HDA) maintain a clean environment to the heads and disks. DiamondMax 1750 drives are designed to operate in a typical office setting with minimum environmental control.

Microprocessor

The microprocessor controls the following functions for the drive electronics:

Command execution

Cache management

Data correction and error recovery

Diagnostic execution

Data sequencing

Head positioning (including error recovery)

Host interface

Index detection

Spin speed control

Seeks

Servo

2 – 13

PRODUCT DESCRIPTION

Subsystem Configuration

Dual Drive Support

Two drives may be accessed via a common interface cable, using the same range of I/O addresses. The drives are jumpered as device 0 or 1 (Master/Slave), and are selected by the drive select bit in the Device/Head register of the task file.

All Task File registers are written in parallel to both drives. The interface processor on each drive decides whether a command written to it should be executed; this depends on the type of command and which drive is selected. Only the drive selected executes the command and activates the data bus in response to host I/O reads; the drive not selected remains inactive.

A master/slave relationship exists between the two drives: device 0 is the master and device 1 the slave. When J50 is closed

(factory default, figure 2-1), the drive assumes the role of master; when open, the drive acts as a slave. In single drive configurations, J50 must be closed.

Cable Select Option

CSEL (cable select) is an optional feature per ANSI ATA specification. Drives configured in a multiple drive system are identified by CSEL’s value:

– If CSEL is grounded, then the drive address is 0.

– If CSEL is open, then the drive address is 1.

Jumper Location/Configuration

Darkened jumper pins indicate factory-installed (default) shunts.

JUMPER CONFIGURATION J50 J48 J46 J44 J42

Master/Slave

Only drive in single drive system*

Master in dual drive system*

Slave in dual drive system

J

J

O

Cable Select

O

J

Disabled*

Enabled

4092 Cylinder Limitation

Disabled*

Enabled

Factory Reserved

Factory Reserved

Key

O

J

O

O

* = Default J = Jumpered O = Open

Figure 2-1

PCBA Jumper Location and Configuration

4092 Cylinder Limitation

On some older BIOS', primarily those that auto-configure the disk drive, a hang may occur when the drive cylinder value exceeds 4096. The 4092 Cylinder Limitation jumper reduces the capacity in the Identify Drive to 4092 allowing large capacity drives to work with older BIOS'. A software driver is required to access the full capacity of the drive.

2 – 14

PRODUCT SPECIFICATIONS

SECTION 3

Product Specifications

Configuration

MODEL

Formatted Capacity (LBA Mode)

Integrated Controller/Interface

Encoding Method

Interleave

Servo System

Buffer Size/Type

Data Zones per Surface

Data Surfaces/Heads

Aerial Density

Tracks per Surface (Cylinders)

Track Density

Flux Density

Recording Density

Bytes per Sector/Block

Sectors per Track

Sectors per Drive

87000A8 86480A8 85250A6 84320A5 83500A4 83240A4 82560A3 81750A2

7,000 MB 6,480 MB 5,250 MB 4,320 MB 3,500 MB 3,240 MB 2,560 MB 1,750 MB

ATA-4/EIDE

RLL 8,9

1:1

Embedded

256 KB/EDO DRAM

16

3 2 8 8 6 5

1,200 Mb/in 2

4

7,825

7,797 tpi

138-172 kfci

4

123-153 kbpi

512

156-249

13,678,880 12,656,250 10,259,160 8,437,500 6,839,440 6,328,125 5,001,728 3,419,720

Performance

MODEL

Seek Times (Typical)

Track to Track

Average

Maximum

Average Latency

Rotational Speed (±0.1%)

Controller Command Overhead

Data Transfer Rate

To/from Interface

(PIO 4/Multi-word DMA - Mode 2)

To/from Media

Start Time (0 to Drive Ready)

87000A8 86480A8 85250A6 84320A5 83500A4 83240A4

1.2 ms

< 10.0 ms

18 ms

5.77 ms

5,200 RPM

< 0.5 ms

16.7 MB/sec

Up to 14.0 MB/sec

7.3 sec typical

82560A3 81750A2

3 – 15


Physical Dimensions

Height

Length

Width

Weight

1.00 inches

5.75 inches

4.00 inches

1.2 pounds

[25.4 mm]

[146.1 mm]

[101.6 mm]

[0.5 kg]

3 – 16

Figure 3 - 1

Outline and Mounting Dimensions


Power Requirements (Average)

MODE

Spin-up (peak)

Active

Seek

Read/Write

Idle

Standby

Sleep

12V ± 8%

1058 mA

234 mA

530 mA

237 mA

232 mA

2 mA

2 mA

5V ± 5%

260 mA

400 mA

418 mA

430 mA

224 mA

140 mA

80 mA

POWER

12.7 W

4.8 W

8.5 W

5.0 W

3.9 W

0.7 W

0.4 W

Power Mode Definitions

Active

The drive is spinning and most circuitry is powered on. The drive is capable of responding to read commands in the shortest possible time. Read/Write heads are positioned over the data area.

Idle

The drive is spinning, the actuator is parked and powered off and all other circuitry is powered on. The drive is capable of responding to read commands within 40 ms.

Read/Write

Data is being read from or written to the drive.

Spin-up

The drive is spinning up following initial application of power and has not yet reached full speed.

Sleep

This is the lowest power state. The interface becomes inactive. A software or hardware reset is required to return the drive to Active.

Standby

The spin motor is not spinning. The drive will leave this mode upon receipt of a command that requires disk access. The time-out value for this mode is programmable. The buffer is active to accept write data.

Seek

A random access operation by the disk drive.

Environmental

PARAMETER

Temperature

Thermal Gradient (maximum)

Relative Humidity

Wet Bulb

Altitude

OPERATING

5° C to 55° C

25° C per hour

-200 to 10,000 feet (with any naturally occurring temperature and humidity within this range)

NON-OPERATING/STORAGE

Low temperature (-40° C) per MIL-STD-810E, Method 502.3.

High temperature (71° C) per MIL-STD-810E, Method 501.3,

Climatic Category; Hot-induced conditions.

25° C per hour

5% to 95% (Non-condensing)

27° C maximum

Per MIL-STD-810E, Method 500.3, Low pressure (altitude) Test

Procedure I. Storage; Test Condition 2, Transport aircraft cargo compartment pressure.

3 – 17


Shock and Vibration

PARAMETER

Mechanical Shock

Random Vibration

OPERATING

20 Gs, 2.0 ms, no errors

Per MIL-STD-810E, Method 514.4, Basic transportation,

Vertical axis PSD profile.

10 Hz at 0.0125 G 2 /Hz

40 Hz at 0.0125 G 2 /Hz

500 Hz at 0.000125 G 2 /Hz

Swept Sine Vibration

5 - 20 Hz

21 - 300 Hz

0.049 inches double amplitude

1.0 G peak amplitude

NON-OPERATING

200 Gs, 2.0 ms, no damage

Per MIL-STD-810E, Method 514.4, Basic transportation,

Vertical axis PSD profile.

10 Hz at 0.015 G 2 /Hz

40 Hz at 0.015 G 2 /Hz

500 Hz at 0.00015 G 2 /Hz

Reliability and Maintenance

MTBF – >>>>> 500,000 hours

Maxtor does not differentiate between various usage profiles. (.e. power-on hours, power saving modes, nonoperating periods or operating temperatures within the published specification.)

Start/Stop Cycles – 50,000 (minimum)

This indicates the minimum cycles for reliable start/stop function at a

≥

60% confidence level.

AFR – 1.7%

The annualized average failure rate (AFR) applies to the period prior to the expiration of component design life, and is based on failures chargeable to Maxtor. Determination of the AFR takes into account: a.) in-warranty field failure returns less quality acceptance-related failures and b.) an AFR equaling an exponentially weighted moving and average monthly failure rate multiplied by 12.

Component Design Life – 5 years (minimum)

Component design life is defined as a.) the time period before identified wear-out mechanisms impact the failure rate, or b.) the time period up to the wear-out point at which useful component life expires.

Quality Acceptance Rate – 99.85% (<1,500 DPPM)

The quality acceptance rate indicates the percentage of Maxtor products successfully installed by our customers, and/or the number of defective parts per million (DPPM) encountered during the entire installation process.

Preventative Maintenance – None

Data Reliability

Data Errors (non-recoverable)* – < 1 per 10 13 bits read

Seek Errors – < 1 per 10 6 seeks

*Average data error rate allowed with all error recovery features activated.

Acoustic Noise

Recorded during Active/Idle mode.

Sound power (per ISO 7779, 10 microphone)

Average

37 dBA

EPA Energy Star Compliance

Maxtor Corporation supports the goals of the U.S. Environmental Protection Agency’s Energy Star program to reduce the electrical power consumption of computer equipment.

3 – 18


EMC/EMI

Radiated Electromagnetic Field Emissions - EMC Compliance

The hard disk drive mechanism is designed as a subassembly for installation into a suitable enclosure and is therefore not subject to Subpart J of Part 15 of FCC Rules (47CFR15) or the Canadian Department of

Communications Radio Interference Regulations. Although not required, the disk mechanism has been tested within a suitable end-use product and found to comply with Class B limits of the FCC Rules and Regulations of the Canadian Department of Communications.

The CE Marking indicates conformity with the European Union Low Voltage Directive (73/23/EEC) when the disk mechanism is installed in a typical personal computer. Maxtor recommends that testing and analysis for EMC compliance be performed with the disk mechanism installed within the user's end-use application.

Canadian Emissions Statement

This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Canadian department of communications.

Le present appareil numerique n'emet pas de bruit radioelectriques depassant les limites applicables aux appareils numeriques de Class B prescrites dans le reglement sur le brouillage radioelectrique edicte par le ministere des communications du Canada.

Radiated Magnetic Field Emissions

Minimum of VDE Class B and MIL-STD-461/462, Method RE01 (stand-alone test configuration).

Radiated Electromagnetic Field Immunity

IEC 801-3, Class 2 compliance.

Radiated Magnetic Field Immunity

Per MIL-STD-461/462, Method RD01(15 Hz to 100 kHz, stand-alone test configuration).

Standard Test Methods

Traditional hard drive specifications are open to incorrect interpretation, but MIL-STD test methods accurately measure how products perform in real-world conditions. These methods have gained worldwide acceptance since they reflect actual environments, have well-defined test requirements, are easily understood and provide repeatable results. They objectively demonstrate to our customers the reliable, durable design of Maxtor hard drives. Each MIL-

STD specification provides the basic method and condition information needed for reference by a knowledgeable

Test and Qualification Engineer.

Acoustic specifications such as sound pressure are misleading because the test methods used are not controlled by recognizable standards. The sound pressure measurement itself is the least meaningful indicator of noise emissions as it relates to the human ear. The specification of sound power, loudness and sharpness are considered the most accurate acoustic measurement methodologies recognized by the leading acoustic measurement experts. ISO 7779, sound power, ISO 532B, loudness and sharpness (proposed ANSI standard by Eberhard Zwicker) are repeatable test methods providing results reproducible in any properly equipped acoustic lab.

Safety Regulatory Compliance

All Maxtor DiamondMax™ 1750 drives comply with relevant product safety standards such as CE, CUL, TUV and

UL rules and regulations. As delivered, DiamondMax 1750 hard disk drives are designed for system integration before they are used.

3 – 19

INSTALLATION

SECTION 4

Handling and Installation

Pre-formatted Drive

This Maxtor hard drive has been low-level formatted at the factory. Do not use a low-level formatting program.

Important Notice

There are a number of system BIOS’s currently in use which do not support hard drives with more than 4095 cylinders (2.1

gigabytes). This section contains information describing the conditions which may identify this limitation. In order to obtain the full capacity of your Maxtor drive, you will need to follow the suggested installation instructions.

Hard Drive Handling Precautions

Please take a moment to observe the following handling cautions:

❏ During handling, NEVER drop, jar, or bump a drive. Handle the drive by its sides and avoid touching the printed circuit board assembly (PCBA).

❏ Hard drives are sensitive to electrostatic discharge (ESD) damage. Use proper ESD practices by grounding yourself and the computer system the hard drive will be installed in.

❏ Allow the hard drive to reach room temperature BEFORE installing it in your computer system.

❏ NEVER switch DC power onto the drive by plugging an electrically live DC source cable into the drive's connector.

NEVER connect a live connector to the hard drive's IDE interface connector.

Electro-Static Discharge (ESD)

To avoid some of the problems associated with ESD, Maxtor advises that anyone handling a disk drive use a wrist strap with an attached wire connected to an earth ground. Failure to observe these precautions voids the warranty.

Manufacturers frequently experience “unsolved” component/hardware malfunctions often caused by ESD. To reduce the incidence of ESD-related problems, Maxtor recommends that any electronics manufacturing plans include a comprehensive

ESD program, the basic elements and functions of which are outlined here:

ESD Program Element

Management

Chief coordinator

Multi-department committee

Employee training

ESD Program Function

Institute and maintain

Organize and enforce

Evaluate and improve

Educate and inform

ESD program supplies typically include: wrist- and foot-worn grounding straps; counter-top and floor antistatic matting; wrist strap testers; ESD video and training materials. Sources for such supplies include:

Static Control Systems – 3M

225-4S, 3M Center

St. Paul, MN 55144

Charleswater

93 Border St.

West Newton, MA 02165-9990

Maxtor also offers a complete video training package, “Care and Handling of Maxtor Disk Drives.”

Contact your Maxtor representative for details.

4 – 20

INSTALLATION

Unpacking and Inspection

Retain any packing material for reuse. Inspect the shipping container for evidence of damage in transit. Notify the carrier immediately in case of damage to the shipping container.

As they are removed, inspect drives for evidence of shipping damage or loose hardware. If a drive is damaged (and no container damage is evident), notify Maxtor immediately for drive disposition.

Figure 4 - 1

Multi-pack Shipping Container

4 – 21

INSTALLATION

4 – 22

Figure 4 - 2

Single Pack Shipping Container (Option A)

Figure 4 - 3

Single Pack Shipping Container (Option B)

Repacking

If a Maxtor drive requires return, repack it using Maxtor packing materials, including the antistatic bag.

Physical Installation

Recommended Mounting Configuration

The DiamondMax™ 1750 drive design allows greater shock tolerance than that afforded by larger, heavier drives. The drive may be mounted in any attitude using four size 6-32 screws with 1/8-inch maximum penetration and a maximum torque of 5-inch pounds. See Figure 3-1 for mounting dimensions. Allow adequate ventilation to the drive to ensure reliable operation.

Drive Jumper Settings

Figure 4-4 shows the valid jumper settings for the Maxtor hard drive.

A spare jumper shunt is shipped between J46 and J48.

INSTALLATION

Figure 4 - 4

Master/Slave Jumper Detail

Mounting Drive in System

Turn the computer OFF, disconnect the power cord and remove the cover. Refer to your computer user’s manual for additional information.

Installing 5.25-inch Mounting Brackets

Mounting brackets are only needed when the drive will be installed in a 5.25-inch drive bay. This step is not necessary when installing the drive in a 3.5-inch bay. See Figure 4-5 below.

Mounting Rails

Mounting rails are attached to the mounting bracket for systems requiring this feature. See Figure 4-5 below.

Figure 4 - 5

5.25-inch Mounting Brackets/Slider Rails

4 – 23

INSTALLATION

Note: The following figures are examples of typical computer systems and mounting placements. The computer system the

Maxtor hard drive is being installed in may have implemented a different mounting and placement methodology.

Mounting Drive in 5.25-inch Bay

If the Maxtor hard drive will be mounted in a 5.25-inch bay, install it as shown in Figure 4-6 below.

Figure 4 - 6


Mounting Drive in 3.5-inch Bay

If the Maxtor hard drive will be mounted in a 3.5-inch bay, install it as shown in Figure 4-7 below.

Figure 4 - 7


4 – 24

INSTALLATION

Attaching IDE Interface and Power Cables

In order for your computer to recognize that the Maxtor hard drive is in the system, the IDE interface and power cables must be connected to the hard drive, the mother board or the IDE hard drive interface card.

1 Attach an available IDE interface connector to J1 (see Figure 4-8 below) on the Maxtor hard drive.

This connector is keyed and will only fit in one orientation. Do not force the connector.

The striped or colored edge of the IDE interface cable indicates pin 1. Pin 1 on the IDE interface cable should match pin 1 on the drive connector. On the Maxtor hard drive, pin 1 is closest to the power connector.

2 Connect an available power connector to J2 (see Figure 4-8 below) on the Maxtor hard drive.

This connector is keyed and will only fit in one orientation. Do not force the connector.

Figure 4 - 8

IDE Interface and Power Cabling Detail

After attaching the IDE interface cable and the power cable to the Maxtor hard drive, verify that all other cables connected to other devices, the mother board or interface cards are correctly seated.

4 – 25

INSTALLATION

Attaching System Cables

Attach the 40-pin IDE interface cable from the Maxtor hard drive to the IDE connector on the IDE interface card.

Figure 4 - 9

System Interface Card Cabling

OR

Attach the 40-pin IDE interface cable from the Maxtor hard drive to the IDE connector on the mother board.

4 – 26

Figure 4 - 10

System Mother board Cabling

INSTALLATION

System Setup

The following procedures are designed for systems using the DOS 5.0 (or higher) or Windows 95 operating systems. For other operating systems (e.g., OS2 ® , UNIX ® , LINUX and Novell NetWare ® ), refer to the operating system user’s manual for the BIOS setting and other installation requirements

Setting the BIOS (CMOS)

In order for the computer system to recognize the new Maxtor hard drive, it is necessary to set the system BIOS with the correct information about the hard drive.

The SETUP (BIOS) program identifies the system configuration information (e.g., floppy disk drives, hard disk drives, video, etc.) used by the computer during system boot. This includes the information about what kind and how many hard drives are attached to the system. When entering the settings for the new Maxtor hard drive, be careful not to change any of the other

BIOS settings, or other parts of the system may not work correctly.

Most of the systems with newer BIOS’ (typically with a date of July 1994 or newer), support large capacity hard drives. It is necessary to determine if the system provides support for large capacity hard drives before entering the settings, as this affects how to correctly set the BIOS parameters for the new Maxtor hard drive.

If you are unsure of how to access the system BIOS and/or program the BIOS settings, refer to the computers user’s manual for detailed instructions.

Set the BIOS (CMOS) parameters as follows:

1.

Turn the system ON. During the system start-up sequence, run the SETUP (BIOS) program or similar commands to access the system BIOS.

NOTE: Newer systems will typically display a message (e.g., press DEL to Enter Setup) identifying how to access the SETUP (BIOS) program.

2.

Once the SETUP (BIOS) program is active, do one of the following to set the hard drive BIOS parameters.

a) If the SETUP program provides an “AUTO DETECT” capability, use this feature to detect the

Maxtor hard drive. After the SETUP program has detected the hard drive, verify that the Logical

Block Addressing (LBA) mode is enabled for this drive. If the SETUP program does not provide

“AUTO DETECT” capability, set the drive parameters as defined in b) below.

Comment: When LBA is enabled, some BIOS programs will change the values of the cylinders and heads by dividing the cylinders by 2, 4, 8 or 16 and multiplying the heads by the same value.

This does not change the capacity of the hard drive.

b) If the SETUP program does not provide an “AUTO DETECT” capability, the drive parameters must be set using the User Definable Type (UDT). Select the appropriate UDT for the Maxtor hard drive and set the cylinder, head and sector values for the model being installed from the table below.

Only the values listed in the table must be entered. Other values may be entered as zero (0). Set the

LBA mode to enabled for this drive. If the SETUP program does not provide the UDT, set the drive parameters as defined in c) below.

Drive Parameters

MODEL

87000A8

86480A8

85250A6

84320A5

83500A4

83240A4

82560A3

81750A2

CYLINDERS

14,475

13,392

10,856

8,928

7,237

6,696

5,292

3,618

HEADS

15

15

15

15

15

15

15

15

SECTORS

63

63

63

63

63

63

63

63

CAPACITY

7,000 MB

6,480 MB

5,250 MB

4,320 MB

3,500 MB

3,240 MB

2,560 MB

1,750 MB an

4 – 27

INSTALLATION c) If the system has an older BIOS which does not provide a UDT, set the BIOS for the Maxtor hard drive to Type 9. If this BIOS setting is used or the BIOS does not support LBA, the drive must be prepared using Max•Blast software.

3.

After the drive parameters are entered, follow the SETUP program procedures to save the settings and exit the SETUP program. After changing BIOS settings, saving the values and exiting, the SETUP program should force the system to re-boot.

Boot the system to the bootable Max•Blast installation software diskette received with the hard drive or with a

DOS 5.0 (or higher) or Windows 95 system diskette. If the system boots normally, proceed to the “Hard Drive

Preparation” section.

System Hangs During Boot

If after installing the Maxtor hard drive in the system or after setting the system BIOS the system hangs during the boot process, the system may have a BIOS limitation. This may occur for drives with capacities larger than 2.1 GB.

If the system locks up before accessing the BIOS SETUP program or if it locks up during the boot process after setting the system BIOS, the system may have a BIOS with a cylinder limitation. If this happens, perform the following:

1 Turn the system OFF.

2 Install jumper J46 on the drive using the spare jumper shipped across pins J46 and J48 or if the drive is installed as a Slave, store the spare jumper across J42 and J44.

4 – 28

3 If the BIOS was set to AUTO DETECT, re-boot the system and use Max•Blast installation software to complete the hard drive installation. If other BIOS settings were used, access the system BIOS SETUP program and set the BIOS parameters to Type 9 for the Maxtor hard drive then re-boot the system and use Max•Blast installation software to complete the hard drive installation. NOTE: When this jumper is installed, the Maxtor hard drive must be prepared using Max•Blast.

INSTALLATION

Windows NT 4.0 Users

If the cylinder reduction jumper is installed, Windows NT 4.0 will not work with MaxBlast Installation Software (ver.

9.00M or newer) and the drive capacity will be limited to 2.1 GB. If the cylinder reduction jumper is not installed,

Windows NT 4.0 will work with MaxBlast.

Microsoft recommends that Windows NT 4.0 only be installed on a system that has a BIOS which supports drives larger than

2.1 GB.

Hard Drive Preparation

To complete the installation of the Maxtor hard drive, the drive must be partitioned and formatted.

1.

Boot the system.

a) Using the Max•Blast diskette received with the hard drive, place the diskette in the A: drive and turn the system on. Proceed to Step 2.

b) If a Max•Blast diskette was not included with the hard drive:

1) Boot the system with a DOS 5.0 (or higher) or Windows 95 system diskette

2) Place the diskette with the downloaded version of Max•Blast in the appropriate floppy drive.

3) Type “EZMAX” and press the [Enter] key.

2.

The Max•Blast installation software will load and the first screen of the program will display. Follow the on-screen prompts to complete the hard drive installation.

4 – 29

AT INTERFACE DESCRIPTION

SECTION 5

AT Interface Description

Interface Connector

All DiamondMax™ 1750 AT drives have a 40-pin ATA interface connector mounted on the PCBA. The drive may connect directly to the host; or it can also accommodate a cable connection (maximum cable length: 18 inches).

Figure 5-1

Data Connector

Pin Description Summary

13

15

17

07

09

11

PIN

01

03

05

25

27

29

19

21

23

SIGNAL

Reset -

DD7

DD6

DD5

DD4

DD3

DD2

DD1

DD0

Ground

DMARQ

DIOW -:STOP

DIOR -:HDMARDY:HSTROBE

IORDY:DDMARDY:DSTROBE

DMACK -

31

33

35

37

39

INTRQ

DA1

DA0

CS0 -

DASP -

32

34

36

38

40

14

16

18

08

10

12

PIN

02

04

06

26

28

30

20

22

24

(keypin)

Ground

Ground

Ground

CSEL

Ground

IOCS16

Obsolete

PDIAG -

DA2

CS1 -

Ground

SIGNAL

Ground

DD8

DD9

DD10

DD11

DD12

DD13

DD14

DD15

5 – 30


DMACK -

INTRQ

IOCS16

PDIAG -

DA0

DA1

DA2

CS0 -

CS1 -

DASP -

GND

Pin Description Table

PIN NAME

RESET -

PIN

01

I/O SIGNAL NAME

I Host Reset

DD0 17 I/O Host Data Bus

DD7

DD8

DD9

DD10

DD11

DD12

DD13

DD1

DD2

DD3

DD4

DD5

DD6

DD14

DD15

DMARQ

DIOW - STOP

DIOR -

HDMARDY -

HSTROBE

IORDY

DDMARDY -

DSTROBE

CSEL

23

25

03

04

06

08

10

12

14

16

18

21

15

13

11

09

07

05

27

28

I

I

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I/O

I/O

O

I/O

I/O

I/O

I/O

I/O

I/O

O

DMA Request

Host I/O Write

Host I/O Read

I/O Channel Ready

Cable Select

I DMA Acknowledge

I

I

I

O Host Interrupt

Request

Device 16 bit I/O

I/O Passed Diagnostic

I Host Address Bus

Host Chip Select 0

I Host Chip Select 1

I/O Drive Active/Drive 1

Present

N/A Ground

KEY

33

36

37

32

34

35

38

29

31

39

02

19

22

24

40

20

26

30

N/A Key

SIGNAL DESCRIPTION

Reset signal from the host system. Active during power up and inactive after.

16 bit bi-directional data bus between host and drive. Lower 8 bits used for register and ECC byte transfers. All 16 bits used for data transfers.

This signal is used with DMACK for DMA transfers. By asserting this signal, the drive indicates that data is ready to be transfered to and from the host.

Rising edge of Write strobe clocks data from the host data bus to a register on the drive.

Read strobe enables data from a register on the drive onto the host data bus.

DMA ready during UltraDMA data in bursts.

Data strobe during UltraDMA data out bursts.

This signal may be driven low by the drive to insert wait states into host I/O cycles.

DMA ready during UltraDMA data out bursts.

Data strobe during UltraDMA data in bursts.

Used for Master/Slave selection via cable. Requires special cabling on host system and installation of Cable Select jumper.

This signal is used with DMARQ for DMA transfers. By asserting this signal, the host is acknowledging the receipt of data or is indicating that data is available.

Interrupt to the host asserted when the drive requires attention from the host.

Obsolete

Output by drive when in Slave mode; Input to drive when in Master mode.

3 bit binary address from the host to select a register in the drive.

Chip select from the host used to access the Command Block registers in the drive. This signal is a decode of I/O addresses 1F0 - 1F7 hex.

Chip select from the host used to access the Control registers in the drive. This signal is a decode of I/O addresses 3F6 - 3F7 hex.

Time-multiplexed, open collector output which indicates that a drive is active, or that device 1 is present.

Signal ground.

Pin used for keying the interface connector.

5 – 31


PIO Timing

t1 t2

TIMING PARAMETERS t0 Cycle Time (min)

Address valid to DIOR-/DIOW- setup (min)

DIOR-/DIOW- 16-bit (min) t4 t5 t6 t2i DIOR-/DIOW- recovery time (min) t3 DIOW- data setup (min)

DIOW- data hold (min)

DIOR- data setup (min)

DIOW- data hold (min) t6Z DIOR- data tristate (max) t9 DIOR-/DIOW- to address valid hold (min) tRd Read Data Valid to IORDY active (min) tA IORDY Setup Time tB IORDY Pulse Width (max)

MODE 0 MODE 1 MODE 2 MODE 3 MODE 4

600 ns 383 ns 240 ns 180 ns 120 ns

70 ns

165 ns

50 ns

125 ns

30 ns

100 ns

30 ns

80 ns

25 ns

70 ns

60 ns

30 ns

50 ns

5 ns

30 ns

20 ns

0

35 ns

1250 ns

45 ns

20 ns

35 ns

5 ns

30 ns

15 ns

0

35 ns

1250 ns

30 ns

15 ns

20 ns

5 ns

30 ns

10 ns

0

35 ns

1250 ns

70 ns

30 ns

10 ns

20 ns

5 ns

30 ns

10 ns

0

35 ns

1250 ns

25 ns

20 ns

10 ns

20 ns

5 ns

30 ns

10 ns

0

35 ns

1250 ns

5 – 32

Figure 5 - 2

PIO Data Transfer To/From Device

DMA Timing

tD tE tF tG

TIMING PARAMETERS t0 tC

Cycle Time (min)

DMACK to DMARQ delay

DIOR-/DIOW- (min)

DIOR- data access (min)

DIOR- data hold (min)

DIOR-/DIOW- data setup (min) tH tI

DIOW- data hold (min)

DMACK to DIOR-/DIOW- setup (min) tJ DIOR-/DIOW- to DMACK hold (min) tKr DIOR- negated pulse width (min) tKw DIOW- negated pulse width (min) tLr DIOR- to DMARQ delay (max) tLw DIOW- to DMARQ delay (max) tZ DMACK- to tristate (max)

MODE 0 MODE 1 MODE 2

480 ns 150 ns 120 ns

70 ns 215 ns

150 ns

5 ns

100 ns

20 ns

0

20 ns

50 ns

215 ns

120 ns

40 ns

20 ns

80 ns

60 ns

5 ns

30 ns

15 ns

0

5 ns

50 ns

50 ns

40 ns

40 ns

25 ns

5 ns

20 ns

10 ns

0

5 ns

25 ns

25 ns

35 ns

35 ns

25 ns


Figure 5 - 3

Multi-word DMA Data Transfer

5 – 33

HOST SOFTWARE INTERFACE

SECTION 6

Host Software Interface

The host communicates with the drive through a set of controller registers accessed via the host’s I/O ports.

These registers divide into two groups: the Task File, used for passing commands and command parameters and the Control/Diagnostic registers.

Task File Registers

The Task File consists of eight registers used to control fixed disk operations. The host accesses each register by the I/O port address shown in this Task File register map:

I/O PORT

1F0h

1F1h

1F2h

1F3h

1F4h

1F5h

1F6h

1F7h

READ

Data Register

Error Register

Sector Count

Sector Number

Cylinder Low

Cylinder High

Drive/Head (SDH)

Status Register

WRITE

Data Register

Features Register

Sector Count

Sector Number

Cylinder Low

Cylinder High

Drive/Head (SDH)

Command Register

Data Register

Provides access to the drive’s sector buffer for read and write operations. With the exception of ECC byte transfers (which, during Read long and Write long commands, are 8 bits wide), data transfers through the Data register are all 16 bits wide.

Error Register

A read-only register containing specific information regarding the previous command. Data interpretation differs depending on whether the controller is in operational or diagnostic mode. A power up, reset, software reset, or receipt of a diagnostic command sets the controller into diagnostic mode. This mode invalidates contents of the Status register. The contents of the Error register reflect a completion code.

Issuing any command (apart from a Diagnostic command) places the controller into operational mode.

In operational mode, the Error register is valid only when the Error bit in the Status register is set. The bit definitions for operational mode follow:

7

0

Interface

CRC

6

ECC

Data

ECC Error

5

0

Not

Used

4

IDNF

ID

Not Found

3

0

Not

Used

2

ABRT

Aborted

Command

1

TK0

Track 0

Error

0

AMNF

Address Mark

Not Found

Interface CRC – An interface CRC error occurred during an Ultra DMA transfer.

Data ECC Error – An non-correctable ECC error occurred during a Read Sector command.

Firmware Problem – Indicates a firmware problem was detected, (e.g., invalid interrupt, divide overflow).

ID Not Found – Either a matching ID field not found, or a CRC error occurred.

Aborted Command – Invalid commands, write fault, no seek complete, or drive not ready.

Track 0 Error – Track 0 was not found during execution of a Restore command.

Address Mark Not Found – The Address Mark could not be found after an ID match.

Features Register

Enables or disables features through the Set Features command.

6 – 34


Sector Count Register

Holds the number of sectors to be sent during a Read or Write command, and the number of sectors per track during a

Format command. A value of zero in this register implies a transfer of 256 sectors. A multi-sector operation decrements the

Sector Count register. If an error occurs during such an operation, this register contains the remaining number of sectors to be transferred.

Sector Number Register

Holds the starting sector number for any disk operation. The register is updated as each sector is processed in a multi-sector operation.

Cylinder Number Registers

Two 8-bit Cylinder Number registers (Low and High) specify the starting cylinder for disk operation.

Device/Head Register

Used to specify the drive and head number to be operated on during any disk operations. Within the context of a Set Parameters command, this register specifies the maximum number of heads on the drive.

Bit definitions follow:

7

1

6

LBA

LBA

Mode

5

1

4

DRV

Drive

Select

3

HS3

Head

Select

2

HS2

Head

Select

1

HS1

Head

Select

0

HS0

Head

Select

Select LBA Mode – Enabling this bit for commands not supported by LBA mode will abort the selected command. When set, the Task File register contents are defined as follows for the Read/Write and translate command:

CONTENTS

Sector Number

Cylinder Low

Cylinder High

Drive/Head

LBA BITS

0 - 7

8 - 15

16 - 23

24 - 27

Drive Select – Set to 0 to select the master drive; set to 1 to select the slave drive.

Head Select – Specifies the binary coded address of the head to be selected.

Status Register

Contains results of the last command executed, and the drive’s status. The other seven Task File registers may be read only when bit 7 (BUSY) of the Status register is low. Reading any of the Task File registers when BUSY is high returns the value of the Status register. Reading the Status register also clears any interrupt request to the host. Bit definitions follow:

7

BUSY

Controller

Busy

6

DRDY

Device

Ready

5

DF

Device

Fault

4

DSC

Device Seek

Complete

3

DRQ

Data

Request

2

0

1

0

0

ERR

Error

Controller Busy – Goes active when a command is written to the Command register, indicating controller task execution. After a command, this bit resets.

Device Ready – Indicates that the drive is ready for commands. If drive ready is not present, all commands abort.

Device Fault – Indicates the drive’s detection of a write fault condition, causing all commands to abort.

Device Seek Complete – Signifies a seek completion, and that the drive is on track.

Data Request – Indicates that the drive’s sector buffer is ready for data transfer.

Error – The Error bit sets when the previous command has completed with a non-recoverable error.

6 – 35


Command Register

Contains code for the command to be performed. Additional command information should be written to the task file before the Command register is loaded. When this register is written, the BUSY bit in the Status register sets, and interrupt request to the host clears; invalid commands abort. (Detailed information on interface commands is given in Section 7.) Hex values for valid command formats follow:

Read Commands

Read Sector(s)


Read Sector Buffer

Read Multiple

Read DMA

C4h

C8h

C9h

Write Commands

Write Sector(s)


Write Sector Buffer

Write Multiple

Write DMA

30h

31h

32h

33h

3Ch

E8h

C5h

CAh

CBh

Mode Set/Check Commands

Set Features

Set Multiple Mode

EFh

C6h

20h

21h

22h

23h

40h

41h

E4h

Normal reads; retries enabled

Normal reads; retries disabled

Read Long; retries enabled

Read Long; retries disabled

Retries enabled

Retries disabled

No retries

Normal writes; retries enabled

Normal writes; retries disabled

Write Long; retries enabled

Write Long; retries disabled

No retries

Power Mode Commands

Standby Immediate

Idle Immediate

Standby

Idle

Check Power Mode

Set Sleep Mode

94/E0h Stops drive spindle; do not change time-out value

95/E1h Starts spindle; do not change time-out value

96/E2h Stops spindle; change time-out value

97/E3h Starts spindle; change time-out value

98/E5h

99/E6h

Initialization Commands

Identify Drive ECh


Re-calibrate

91h

1xh

Seek, Format, and Diagnostic Commands

Seek

Format Track

Execute Drive Diagnostic

50h

7xh

90h

S.M.A.R.T. Commands

Execute S.M.A.R.T.

B0h

6 – 36


Summary

COMMAND NAME COMMAND CODE PARAMETERS USED b7 b6 b5 b4 b3 b2 b1 b0 F SC SN

Recalibrate

Read Sector(s)

0

0

0

0

0

1

1

0 x

0 x

0 x

L x x

N

N

N

Y

N

Y

Read DMA

Write Sector(s)

Write DMA


1

0

1

0

1

0

1

0

0

1

0

1

0

1

0

1

1

0

1

1

0

0

0

1

0

L

1

0 x x x

0

N

N

N

N

Y

Y

Y

Y

Y

Y

Y

Y


Format Track

Seek

Execute Diagnostic

Initialize Parameters

Read Sector Buffer

Write Sector Buffer

Identify Drive

Set Features

Read Multiple

Write Multiple

Set Multiple Mode

0

0

0

1

1

1

1

1

1

1

1

1

1

1

1

0

0

1

1

1

1

1

1

1

0

0

1

0

0

1

1

1

1

0

0

0

0

1

1

1

1

0

0

0

0

0

0

0

0

0 x

0

0

0

1

1

1

0

0

0

0

0 x

0

0

1

0

1

1

1

1

1

0

0 x

0

0

0

0

0

1

0

0

1 x

0 x

0

1

0

0

0

1

0

1

0

N

N

N

N

N

N

N

N

Y

N

N

N

N

N

Y

N

N

Y

Y

Y

Y

N

N

N

N

N

N

N

N

Y

Y

N

Y

N

Y

N

N

N

N

N

N

Y

Y

N

Y

Y

Y

N

Y

Y

Y

Y

C

N

Y

D

D

Y

D

D

Y

Y

D

Y

Y

Y

D

Y

Y

Y

Y

SDH

D

Y

KEY EXPLANATION

L Long bit

If L = 1, Read/Write Long commands are performed

If L = 0, normal Read/Write commands are performed

SC Sector count register

SN Sector number register

C Cylinder register

F Features register

SDH Drive/Head register

Y Indicates that the register contains a valid parameter for a cited command.

Within the Drive/Head register, Y indicates that both the drive and head parameters are used.

D

X

Signifies that the drive parameter, not the head parameter, is valid.

Don't care

N Not required

6 – 37


Control Diagnostic Registers

These I/O port addresses reference three Control/Diagnostic registers:

I/O PORT

3F6h

3F7h

READ

Alternate Status

Digital Input

WRITE

Fixed Disk Control

Not used

Alternate Status Register

Contains the same information as the Status register in the Task File. However, this register may be read at any time without clearing a pending interrupt.

Device Control Register

Contains the software Reset bit and the Enable bit to enable interrupt requests to the host. Bit definitions follow:

7

0

6

0

5

0

4

0

3

0

2

SRST

Reset

1

IEN

IRQ Enable

0

0

Reset – Setting the software Reset bit holds the drive in the reset state. Clearing the bit re-enables the drive.

The software Reset bit must be held active for a minimum of 5 µsec.

IRQ Enable – Setting the Interrupt Request Enable to 0 enables the IRQ 14 signal to the host. When this bit is set to 1, IRQ14 is tri-stated, and interrupts to the host are disabled. Any pending interrupt occurs when the bit is set to 0.

The default state of this bit after power up is 0 (interrupt enabled).

Digital Input Register

Contains information about the state of the drive. Bit definitions follow:

7 x

Reserved

6

-WG

Write

Gate

5

-HS3

Head

Select 3

4

-HS2

Head

Select 2

3

-HS1

Head

Select 1

2

-HS0

Head

Select 0

1

-DS1

Drive

Select 1

0

DS0

Drive

Select 0

Bit 7 of the host data bus is not driven when this register is read.

-Write Gate – Reflects the state of the active low write gate signal on the drive.

-Head Select 3 through -Head Select 0 – Represents the ones complement of the currently selected head number.

-Drive Select 1 – Is 0 if drive 1 selected; 1 otherwise.

-Drive Select 0 – Is 0 if drive 0 selected; 1 otherwise.

6 – 38


Reset and Interrupt Handling

Reset Handling

One of three different conditions may cause a reset: power on, hardware reset or software reset. All three cause the interface processor to initialize itself and the Task File registers of the interface. A reset also causes a set of the Busy bit in the

Status register. The Busy bit does not clear until the reset clears and the drive completes initialization. Completion of a reset operation does not generate a host interrupt.

Task File registers are initialized as follows:

Error

Sector Count

Sector Number

Cylinder Low

Cylinder High

Drive/Head

1

0

1

1

0

0

Interrupt Handling

The drive requests data transfers to and from the host by asserting its IRQ 14 signal. This signal interrupts the host if enabled by bit 1 (IRQ enable) of the Fixed Disk Control register.

Clear this interrupt by reading the Status register, writing the Command register, or by executing a host hardware or software reset.

6 – 39

INTERFACE COMMANDS

Interface Commands

The following section describes the commands (and any parameters necessary to execute them), as well as Status and Error register bits affected.

Read Commands

Read Sector(s)


Read Sector Buffer

Read DMA

Multi-word DMA

Set Multiple

Write Commands

Write Sector(s)


Write Sector Buffer

Write DMA

Multi-word DMA

Write Multiple

Set Feature Commands

Set Features Mode


Standby Immediate

Idle Immediate

Standby

Idle

Check Power Mode

Set Sleep Mode

Default Power-on Condition


Identify Drive


Seek, Format and Diagnostic Commands

Seek

Format Track

Execute Drive Diagnostic

S.M.A.R.T. Commands

Execute S.M.A.R.T.

SECTION 7

7 – 40

INTERFACE COMMANDS

Read Commands

Read Sector(s)

Reads from 1 to 256 sectors, as specified in the Command Block, beginning at the specified sector. (A sector count of 0 requests 256 sectors.) Immediately after the Command register is written, the drive sets the BSY bit and begins execution of the command. If the drive is not already on the desired track, an implied seek is performed.

Once at the desired track, the drive searches for the data address mark of the requested sector. The data address mark must be recognized within a specified number of bytes, or the Data Address Mark Not Found error will be reported. Assuming the data address mark is found:

1. The data field is read into the sector buffer.

2. Error bits are set (if an error was encountered).

3. The DRQ bit is set.

4. An interrupt is generated.

The DRQ bit is always set, regardless of the presence or absence of an error condition after the sector. Upon command completion, the Command Block registers contain the numbers of the cylinder, head and sector of the last sector read.

Back-to-back sector read commands set DRQ and generate an interrupt when the sector buffer is filled at the completion of each sector. The drive is then ready for the data to be read by the host. DRQ is reset and BSY is set immediately when the host empties the sector buffer.

If an error occurs during Read Sector commands, the read terminates at the sector where the error occurred. The host may then read the Command Block to determine the nature of that error, and the sector where it happened. If the error type is a correctable or an non-correctable data error, the flawed data is loaded into the sector buffer.

A Read Long command sets the Long bit in the command code and returns the data and the ECC bytes in the data field of the specified sector. During a Read Long, the drive does not check the ECC bytes to determine if there has been a data error. The Read Long command is limited to single sector requests.

Read Verify Sector(s)

Identical to the Read Sector(s) command, except that:

1. DRQ is never set,

2. No data is transferred back to the host and

3. The long bit is not valid.

The drive sets BSY when the Command register is written; the drive resets BSY and generates an interrupt once the requested sectors have been verified. Upon command completion, the Command Block registers contain the numbers of cylinder, head, and last sector verified.

If an error occurs during the execution of Read Verify Sector(s) commands, the read terminates at the sector where the error happened. The Command Block registers then contain the numbers of the cylinder, head, and sector information where the error occurred.

Read Sector Buffer

Allows the host to read the contents of the drive’s sector buffer. When the command is received, the drive:

1. Sets BSY,

2. Sets up the sector buffer for a read operation,

3. Sets DRQ,

4. Resets BSY and

5. Generates an interrupt.

The host may then read up to 256 words of data from the buffer.

7 – 41

INTERFACE COMMANDS

Read DMA

Multi-word DMA

Identical to the Read Sector(s) command, except that

1.

The host initializes a slave-DMA channel prior to issuing the command,

2.

Data transfers are qualified by DMARQ and are performed by the slave-DMA channel and

3.

The drive issues only one interrupt per command to indicate that data transfer has terminated and status is available.

Any unrecoverable error encountered during execution of a Read DMA command terminates data transfer after the transfer of all sectors prior to the sector where the error was detected. The sector in error is not transferred. The drive generates an interrupt to indicate that data transfer has terminated and status is available.

The error posting is identical to the Read Sector(s) command.

Read Multiple

Performs similarly to the Read Sector(s) command, except that for each READ MULTIPLE command data transfers are multiple sector blocks and the Long bit is not valid.

Execution is also similar to that of the READ SECTOR(S) command, except that:

1. Several sectors are transferred to the host as a block, without intervening interrupts.

2. DRQ qualification of the transfer is required only at the start of each block, not of each sector.

The block count consists of the number of sectors to be transferred as a block. (The block count is programmed by the Set

Multiple Mode command, which must be executed prior to the Read Multiple command.) READ LONG command is limited to single sector requests.

When the Read Multiple command is issued, the Sector Count register contains the number of sectors requested — not the number of blocks or the block count. If the number of sectors is not evenly divisible by the block count, as many full blocks as possible are transferred, followed by a final, partial block transfer. This final, partial block transfer is for N sectors, where N = (sector count) modulo (block count)

The Read Multiple operation will be rejected with an Aborted Command error if attempted:

1. Before the Set Multiple Mode command has been executed, or

2. When Read Multiple commands are disabled.

The controller reports disk errors encountered during Read Multiple commands at the start of the block or partial block transfer. However, DRQ still sets, and the transfer occurs normally, along with the transfer of any corrupt data. Remaining block data from the following the sector in error is not valid.

Subsequent blocks or partial blocks transfer only if the error was a correctable data error. All other errors cause the command to stop after transfer of the block which contained the error. Interrupts are generated when DRQ is set at the beginning of each block or partial block.

Set Multiple Mode

Enables the controller to perform Read and Write Multiple operations, and establishes the block count for these commands. Before issuing this command, the Sector Count register should be loaded with the number of sectors per block.

The drives support block sizes of 2, 4, 8 and 16 sectors.

When this command is received, the controller sets BSY and examines the Sector Count register contents. If they contain a valid and supported block count value, that value is loaded for all subsequent Read and Write Multiple commands, and execution of those commands is enabled. An invalid and unsupported block count in the register results in an Aborted

Command error and the disallows Read Multiple and Write Multiple commands.

If the Sector Count register contains 0 when the Set Multiple Mode command is issued, Read Multiple and Write

Multiple commands are disabled; no error is returned. Once the appropriate action has been taken, the controller resets

BSY and generates an interrupt. At power up, or after a hardware or software reset, Read Multiple and Write Multiple commands are disabled by default.

7 – 42

INTERFACE COMMANDS

Write Commands

Write Sector(s)

Writes from 1 to 256 sectors, beginning at a sector specified in the Command Block. (A sector count of 0 requests 256 sectors.)

When the Command register is written, the drive sets the DRQ bit and waits for the host to fill the sector buffer with the data to be written. An interrupt is not generated to start the first buffer fill operation.

Once the buffer is full, the drive resets DRQ, sets BSY, and begins command execution. If the drive is not already on the desired track, an implied seek is performed.

The data loaded in the buffer is written to the data field of the sector, followed by the ECC bytes. Upon command completion, the Command Block registers contain the cylinder, head and sector number of the last sector written. The next time the buffer is ready to be filled during back-to-back Write Sector commands, DRQ is set and an interrupt is generated.

After the host fills the buffer, DRQ is reset and BSY is set. If an error occurs, Write Sector operations terminate at the sector containing the error.

The Command Block registers then contain the numbers of the cylinder, head and sector where the error occurred. The host may read the Command Block to determine the nature of that error, and on which sector it happened. A Write Long may be executed by setting the Long bit in the command code. The Write Long command writes the data and the ECC bytes directly from the sector buffer; the drive itself does not generate the ECC bytes. Restrict Write Long commands to

PIO Mode 0.

Write Verify Sector(s)

Identical to the Write Sector(s) command, except that the requested sectors are verified immediately after being written.

The verify operation reads (without transferring), and checks for data errors. Any errors encountered during this operation are reported.

Write Sector Buffer

Allows the host to overwrite the contents of the drive’s sector buffer with a selected data pattern. When this command is received, the drive:

1. Sets BSY,

2. Sets up the sector buffer for a write operation,

3. Sets DRQ,

4. Resets BSY and


The host may then write up to 256 words of data to the buffer.

Write Multiple

Performs similarly to the Write Sector(s) command, except that:

1. The controller sets BSY immediately upon receipt of the command,

2. Data transfers are multiple sector blocks and

3. The Long bit and Retry bit is not valid.

Command execution differs from Write Sector(s) because:

1. Several sectors transfer to the host as a block without intervening interrupts.

2. DRQ qualification of the transfer is required at the start of the block, not on each sector.

7 – 43

INTERFACE COMMANDS

The block count consists of the number of sectors to be transferred as a block and is programmed by the Set Multiple

Mode command, which must be executed prior to the Write Multiple command. When the Write Multiple command is issued, the Sector Count register contains the number of sectors requested — not the number of blocks or the block count.

If the number of sectors is not evenly divisible by the block count, as many full blocks as possible are transferred, followed by a final, partial block transfer. This final, partial block transfer is for N sectors, where N = (sector count) modulo (block count)

The Write Multiple operation will be rejected with an Aborted Command error if attempted:

1. Before the Set Multiple Mode command has been executed, or

2. When Write Multiple commands are disabled.

All disk errors encountered during Write Multiple commands report after the attempted disk write of the block or partial block in which the error occurred.

The write operation ends with the sector in error, even if it was in the middle of a block. When an error occurs, subsequent blocks are not transferred. When DRQ is set at the beginning of each full and partial block, interrupts are generated.

Write DMA

Multi-word DMA

Identical to the Write Sector(s) command, except that:

1.

The host initializes a slave-DMA channel prior to issuing the command,

2.

Data transfers are qualified by DMARQ and are performed by the slave-DMA channel and

3.

The drive issues only one interrupt per command to indicate that data transfer has terminated at status is available.

Any error encountered during Write DMA execution results in the termination of data transfer. The drive issues an interrupt to indicate that data transfer has terminated and status is available in the error register. The error posting is the same as that of the Write Sector(s) command.

7 – 44

Set Feature Commands

Set Features Mode

Enables or disables features supported by the drive. When the drive receives this command it:

1. Sets BSY,

2. Checks the contents of the Features register,

3. Clears BSY and


If the value of the register is not a feature supported by the drive, the command is aborted.

The acceptable values in the Features register are defined as follows:

VALUE

02h*

03h

44h

55h

66h*

82h

DESCRIPTION

Enabled write cache

Set transfer mode based on value in Sector Count register

Length of data appended on Read Long/Write Long commands specified in the Identify Device information

Disable read look-ahead feature

Disable reverting to power-on defaults

Disable write cache

AAh*

BBh*

Enable read look-ahead feature

4 bytes of Maxtor specific data appended on Read

Long/Write Long commands

CCh Enable reverting to power-on defaults

* Enabled at power up by default.

INTERFACE COMMANDS

7 – 45

INTERFACE COMMANDS


Standby Immediate – 94h/E0h

Spin down and do not change time out value. This command will spin the drive down and cause the drive to enter the

STANDBY MODE immediately. If the drive is already spun down, the spin down sequence is not executed.

Idle Immediate – 95h/E1h

Spin up and do not change time out value. This command will spin up the spin motor if the drive is spun down, and cause the drive to enter the IDLE MODE immediately. If the drive is already spinning, the spin up sequence is not executed.

The actuator is parked and some circuits are powered off.

Standby – 96h/E2h

Spin down and change time out value. This command will spin the drive down and cause the drive to enter the

STANDBY MODE immediately. If the drive is already spun down, the spin down sequence is not executed. A non-zero value placed in the sector count register will enable the Automatic Power Down sequence. The timer will begin counting down when the drive returns to the IDLE MODE. A value of zero placed in the sector count register will disable the

Automatic Power Down sequence.

Idle – 97h/E3h

Spin up and change time out value. This command will spin-up the spin motor if the drive is spun-down.

If the drive is already spinning, the spin up sequence is not executed. A non-zero value placed in the Sector Count register will enable the Automatic Power Down sequence and their timer will begin counting down immediately. A value of zero placed in the Sector Count register will disable the Automatic Power Down sequence. The actuator is parked and some circuits are powered off.

Check Power Mode – 98h/E5h

This command returns a code in the Sector Count register that determines the current Power Mode status of the drive. If the drive is in, going to, or recovering from the STANDBY MODE the drive sets the Sector Count register to OOh. If the drive is in the IDLE MODE or ACTIVE MODE, the drive sets the Sector Count register to FFh.

Set Sleep Mode – 99h/E6h

This command will spin the drive down and cause the drive to enter the SLEEP MODE immediately. If the drive is already spun down, the spin down sequence is not executed.

Note: The only way to recover from SLEEP MODE is with a software reset or a hardware reset.

Default Power-on Condition

The drive’s default power on condition is the ACTIVE MODE.

Upon receiving a Power Mode command, except the SLEEP MODE command, the drive sets BSY and performs the requested power operation. Once the requested Power Mode change has begun, the drive resets BSY and generates an interrupt - without waiting for the drive to spin up or spin down. Upon receiving a SLEEP MODE command the drive is spun down, and when it is stopped, the drive resets BSY and generates an interrupt.

7 – 46

INTERFACE COMMANDS

When enabling the Automatic Power Down sequence, the value placed in the Sector Count register is multiplied by five seconds to obtain the Time-out Interval value. If no drive commands are received from the host within the Time-out

Interval, the drive automatically enters the STANDBY mode. The minimum value is 5 seconds.

TIMER VALUE

0

1 - 240

241 - 251

252

253

254

255

TIME-OUT PERIOD

Time-out disabled

(value * 5) seconds

((value - 240) * 30) minutes

21 minutes

Vendor unique period = 10 hours

Reserved

21 minutes, 15 seconds

While the drive is in STANDBY MODE, any commands received from the host are accepted and executed as they would in normal operation, except that the spin motor is started if required to execute a disk command. Under these conditions, the drive will set BSY when command processing would normally begin and will leave BSY set until the drive comes up to speed and the disk command can be executed. Disk commands issued while the drive is in STANDBY MODE, restarts the Time-out Interval after completing the command. A reset must be issued before attempting to issue any commands while the drive in

SLEEP MODE.

7 – 47

INTERFACE COMMANDS


Identify Drive

Allows the host to receive parameter information from the drive.

When the command is received, the drive:

1. Sets BSY,

2. Stores the required parameter information in the sector buffer,

3. Sets the DRQ bit and


The host may then read the information out of the sector buffer. Parameter words in the buffer follow.

Note that all reserved bits or words should be zeroes.

3

4-5

6

1

2

WORD CONTENT DESCRIPTION

0 General configuration

15 = device (0 = ATA, 1 = ATAPI)

14-8 = not used

7, 1 = removable media data

6, 1 = not removable controller and/or device

5-1 = reserved

0

Number of cylinders

Reserved

Number of logical heads

Not used

Number of logical sectors per track

7-9 Not used

10 - 19 Drive serial number (40 ASCII characters)

20 Not used

21

22

Buffer size in 512 byte increments (0000h = not specified)

Number of Maxtor specific bytes available on Read/Write Long commands

23 - 26 Firmware revision (8 ASCII characters)

27 - 46 Model number (40 ASCII characters)

47

48

49

Maximum number of sectors that can be transferred per interrupt on read and write multiple commands

Reserved

Capabilities

15 - 14 = reserved

13 = standby timer (1 = values as specified in this standard are supported, 0 = values are Maxtor specific)

12 = reserved (advanced PIO mode support)

11, 1 = IORDY supported, 0 = IORDY may be supported

10, 1 = IORDY can be disabled

9-8 = reserved

7-0 = not used

7 – 48


50 Reserved

51

52

15-8 = PIO data transfer mode

7-0 = not used

15-8 = DMA data transfer mode

53

54

55

56

7-0 = not used

15 = reserved

2, 1 = the fields supported in words 88 are valid, 0 = the fields supported in words 88 are not valid

1, 1 = the fields reports in words 64-70 are valid, 0 = the fields reports in words 64-70 are not valid

0, 1 = the fields reports in words 54-58 are valid, 0 = the fields reports in words 54-58 are not valid

Number of current logical cylinders

Number of current logical heads

Number of logical sectors per track

57 - 58 Current capacity in sectors

59 15-9 = reserved

8, 1 = multiple sector setting is valid

65

66

67

68

69-79

80

7-0xxh = current setting for number of sectors that can per transferred per interrupt on Read/Write Multiple command

60 - 61 Total number of user addressable sectors (LBA mode only)

62

63

Reserved

15-8 = Multi-word DMA transfer mode active

7-0 = Multi=word DMA transfer modes supported

64 15-8 = reserved

7-0 = advanced PIO transfer modes supported

Minimum multi-word DMA transfer cycle time (15-0 = cycle time in nanoseconds)

Manufacturer's recommeded multi-word DMA transfer cycle time (15-0 = cycle time in nanoseconds)

Minimum PIO transfer cycle time without flow control (15-0 = cycle time in nanoseconds)

Minimum PIO transfer cycle time with IORDY flow control (15-0 = cycle time in nanoseconds)

Reserved

15-5 = reserved

81

82

4, 1 = supports ATA-4




0, reserved

Minor version number

Command set supported. If words 82 and 83 = 0000h or FFFFh command set notification not supported.

15, 1 = supports the Identify Device DMA command

14, 1 = supports the NOP command

13, 1 = supports the Write Buffer command

12, 1 = supports the Read Buffer command

11, 1 = supports the Read Buffer command

10, 1 = supports Host-Protected Area feature set

9, 1 = supports the Device Reset command

8, 1 = supports Service Interupt

7, 1 = supports Release Interupt

6, 1 = supports Look Ahead

5, 1 = supports Write Cache

4, 1 = supports the Packet command feature set

3, 1 = supports the Power Management feature command

2, 1 = supports the Removable feature command

1, 1 = supports the Security featurecommand

0, 1 = supports the SMART feature set

INTERFACE COMMANDS

7 – 49

INTERFACE COMMANDS


83 Command sets supported. If words 82, 83 and 84 = 0000h or FFFFh command set notification not supported.

15 = shall be cleared to zero

14 = shall be set to one

13-1 = reserved

0, 1 = supports Download Microcode command

84

85

86

87

88

Command set extensions supported. If words 84, 85 and 86 = 0000h or FFFFh command set notification not supported.



13-0 = reserved

Command set enabled. If words 84, 85 and 86 = 0000h or FFFFh command set notification not supported.

15, 1 = Identify Device DMA command enabled

14, 1 = NOP command enabled

13, 1 = Write Buffer command enabled

12, 1 = Read Buffer command enabled

11, 1 = Write Verify command enabled

10, 1 = Host Protected Area feature set enabled

9, 1 = Device Reset command enabled

8, 1 = Service Interrupt enabled

7, 1 = Release Interrupt enabled

6, 1 = Look Ahead enabled

5, 1 = Write Cache enabled

4, 1 = Packet command feature set enabled

3, 1 = Power Mangement feature set enabled

2, 1 = Removable feature set enabled

1, 1 = Security feature set enabled

0, 1 = SMART feature set enabled

Command sets enabled. If words 85, 86 and 87 = 0000h or FFFFh command set notification not supported.



13-1 = reserved

0, 1 = supports Download Microcode command

Command sets enabled. If words 85, 86 and 87 = 0000h or FFFFh command set notification not supported.



13-0 = reserved

Ultra DMA

15-11 Reserved

10 1 = Ultra DMA Mode 2 is selected

0 = Ultra DMA Mode 2 is not selected





7-3 Reserved

2 1 = Ultra DMA Modes 2 and below are supported

0 = Ultra DMA Mode 2 is not supported

1 1 = Ultra DMA Modes 1 and below are supported

0 = Ultra DMA Mode1 is not supported

0 1 = Ultra DMA Modes 0 is supported

0 = Ultra DMA Mode 0 is not supported

Reserved 127

128 Security Status

15-9 Reserved

8 Security Level 0 = High, 1 = Maximum

7-5 Reserved

4 1 = Security count expired

3 1 = Security frozen

2 1 = Security locked

1 1 = Security enabled

0 1 = Security supported

129-130 Reserved

131 Spin at power-up, but 0 is asserted when no spin at power-up is enabled.

132-159 Maxtor-specific (not used)

160-255 Reserved

7 – 50

INTERFACE COMMANDS

Initialize Drive Parameters

Enables the drive to operate as any logical drive type. The drive will always be in the translate mode because of Zone

Density Recording, which varies the number of sectors per track depending on the zone.

Through setting the Sector

Count Register and Drive Head Register, this command lets the host alter the drive's logical configuration. As a result, the drive can operate as any equal to or less than capacity drive type. Do not exceed the total number of sectors available on the drive:

When this command is executed, the drive reads the Sector Counter Register and the Drive Head Register (and so determines the number of the logical sectors per track and maximum logical head number per cylinder and will calculate the number of logical cylinders.)

Upon receipt of the command, the drive:

1. Sets BSY,

2. Saves the parameters,

3. Resets BSY and


To specify maximum heads, write 1 less than the maximum (e.g. write 4 for a 5 head drive). To specify maximum sectors, specify the actual number of sectors (e.g. 17 for a maximum of 17 sectors/track).

The sector count and head values are not checked for validity by this command. If they are invalid, no error will be posted until an illegal access is made by some other command.

Moves the read/write heads from anywhere on the disk to cylinder 0.

When this command is received, the drive:

1. Sets BSY and

2. Issues a seek to cylinder zero.

The drive waits for the seek to complete, then the drive:

1. Updates status,

2. Resets BSY and


If the drive cannot reach cylinder 0, the Error bit is set in the Status register, and the Track 0 bit is set in the

Error register.

NOTE: If a maximum head and sector number is selected – such that the number of cylinders will exceed 65,535 – then the maximum cylinder value will be reduced to 65, 535.

7 – 51

INTERFACE COMMANDS

Seek, Format and Diagnostic Commands

Seek

Initiates a seek to the track, and selects the head specified in the Command block.

1. Sets BSY in the Status register,

2. Initiates the Seek,

3. Resets BSY and


The drive does not wait for the seek to complete before returning the interrupt. If a new command is issued to a drive during the execution of a Seek command, the drive will wait (with BSY active) for the Seek to complete before executing the new command.

Format Track

Formats the track specified in the Command Block. Shortly after the Command register is written, the drive sets the bit, and waits for the host to fill the sector buffer with the interleave table. When the buffer is full, the drive resets DRQ, sets

BSY and begins command execution. If the drive is not already on the desired track, an implied seek is performed. Once at the desired track the data fields are written with all zeroes.

Execute Drive Diagnostic

Commands the drive to implement the internal diagnostic tests. (These tests are executed only upon command receipt; they do not run automatically at power up or after a reset.)

The drive sets BSY immediately upon receiving this command. The following table presents the codes and their descriptions. Note that the value in the Error register should be viewed as a unique 8 bit Code.

ERROR CODE DESCRIPTION

01 No error detected

00 Master drive failed

80, 82

81

Master and slave drives failed

Slave drive failed

Note: If a slave drive fails diagnostics, the master drive OR’s 80h with its own status, and loads that code into the Error register. If a slave drive passes diagnostics (or a slave is absent), the master drive OR’s 00 with its own status and loads that code into the Error register.

7 – 52

INTERFACE COMMANDS

S.M.A.R.T. Command Set

Execute S.M.A.R.T.

The Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.) command has been implemented to improve the data integrity and data availability of hard disk drives. In some cases, a S.M.A.R.T. capable device will predict an impending failure with sufficient time to allow users to backup their data and replace the drive before data loss or loss of service.

The S.M.A.R.T. sub-commands (listed below) comprise the ATA S.M.A.R.T. feature set that provide access to

S.M.A.R.T. attribute values, attribute thresholds and other logging and reporting information.

Prior to writing a S.M.A.R.T. command to the device’s command register, key values must be written by the host into the device’s Cylinder Low and Cylinder High registers, or the command will be aborted. For any S.M.A.R.T. sub-command, if a device register is not specified as being written with a value by the host, then the value in that register is undefined and will be ignored by the device. The key values are:

Key

4Fh

Register

Cylinder Low (1F4h)

C2h Cylinder High (1F5h)

The S.M.A.R.T. sub-commands use a single command code (B0h) and are differentiated from one another by the value placed in the Features register. In order to issue a command, the host must write the sub-command-specific code to the device’s Features register before writing the command code to the command register. The sub-commands and their respective codes are:

D0hS.M.A.R.T. Read Attribute Value

This feature returns 512 bytes of attribute information to the host.

D1hS.M.A.R.T. Read Attribute Thresholds

This feature returns 512 bytes of warranty failure thresholds to the host.

D2hEnable/Disable Autosave

To enable this feature, set the sector count register to F1h (enable) or 0 (disable). Attribute values are automatically saved to non-volatile storage on the device after five minutes of idle time and before entering idle, sleep or standby modes. This feature is defaulted to “enabled” when S.M.A.R.T. is enabled via the S.M.A.R.T. Enable Operations commands. The autosave feature will not impact host system performance and does not need to be disabled.

D3hS.M.A.R.T. Save Attribute Value

This feature saves the current attribute values to non-volatile storage.

D4hPerform Off-Line Data Collection

Data is collected from random seeks, timed pattern seek times and head margin tests.

D8hEnable S.M.A.R.T.

D9hDisable S.M.A.R.T.

DAh S.M.A.R.T. Return Status

This feature allows the host to assess the status of a S.M.A.R.T. capable device by comparing all saved attribute values with their corresponding warranty failure thresholds. If no thresholds are exceeded, the drive is declared to have a positive health status. If any warranty failure threshold is exceeded, the drive is declared to have a negative health status. Executing this sub-command results in all attribute values being saved to non-volatile storage on the device.

DBh Enable/Disable Automatic Off-Line

To enable this feature, set the Sector Count register to F1h or 0 to disable.

7 – 53

SERVICE AND SUPPORT

SECTION 8

Service and Support

Service Policy

Repairs to any DiamondMax™ 1750 drive should be made only at an authorized Maxtor repair facility.

Any unauthorized repairs or adjustments to the drive void the warranty.

To consistently provide our customers with the best possible products and services, Maxtor developed the

Total Customer Satisfaction (TCS) program. Through the ongoing TCS process, Maxtor employees take direct responsibility for every customer’s level of satisfaction – with Maxtor technology, price, quality, delivery, service and support.

No Quibble

®

Service

Another TCS feature is Maxtor’s No Quibble ® Service policy. By minimizing paperwork and processing,

No Quibble Service dramatically cuts the turnaround time normally required for repairs and returns.

Here’s how it works:

1. Customer calls 1-800-2MAXTOR for a Return Material Authorization (RMA) number and provides a credit card number,

2. Maxtor ships a replacement drive within 48 hours, and

3. Customer returns the original drive and credit card draft is destroyed.

Support

Technical Assistance

Highly-trained technicians are available 6 a.m. to 6 p.m. (MST) Monday through Friday to provide detailed technical support.

U.S. and Canada

Voice

E-mail

Fax

Outside U.S. and Canada

Europe

Voice

E-mail

Fax

Asia/Pacific

Voice

E-mail

Language support: English, Spanish

800-2MAXTOR, press 1 (800-262-9867)

[email protected]

303-678-2260

303-678-2015

Language support: English, French, German

+ 353 1 204 11 11

[email protected]

+ 353 1 286 14 19

Contact your local Maxtor Sales Office for assistance

[email protected]

Language support: English

MaxInfo Service

Use a touch-tone phone to listen to technical information about Maxtor products and the top Q&A’s from our 24-hour automated voice system.

U.S. and Canada


800-2MAXTOR (800-262-9867)

Press 1, wait for announcement, press 1.

303-678-2015, press 1

8 – 54

SERVICE AND SUPPORT

MaxFax ™ Service

Use a touch-tone phone to order Technical Reference Sheets, Drive Specifications, Installation Sheets and other documents from our 24-hour automated fax retrieval system. Requested items are sent to your fax machine.

U.S. and Canada

Phone


Europe

Phone

Asia/Pacific

Phone


800-2MAXTOR, press 3 (800-262-9867)

303-678-2618


+ 353 1 204 11 22


+ 61 2 9369 4733

Internet

Browse the Maxtor home page on Internet, download files from our FTP site.

Home Page http://www.maxtor.com

Bulletin Board Service

A 24-hour seven-day-a-week Bulletin Board Service (BBS) is available. Use the BBS to access and download information and utilities maintained in the Maxtor data files, including utilities, drive specifications and jumper options. Modem settings are 14,400 Baud or lower, 8, 1, N.

U.S. and Canada

Data Phone

Europe

Data Phone

Asia/Pacific

Data Phone


303-678-2222


+ 49 89 963 131


+ 61 2 9369 4293

Customer Service

All Maxtor products are backed by No Quibble ® Service, the benchmark for service and support in the industry. Customer

Service is available 6 a.m. to 5 p.m. (PT) Monday through Friday.

U.S. and Canada

Voice

E-mail

Fax

Europe

Voice

E-mail

Fax

Asia/Pacific


800-2MAXTOR, press 2 (800-262-9867)

[email protected]

408-922-2050


+ 353 1 204 11 11

[email protected]

+ 353 1 286 14 19

Call Singapore Customer Service from the countries listed below.

Customer Service is available 8 a.m. to 5:30 p.m. (Singapore time is GMT +8).

From

Australia

Hong Kong

Indonesia

Japan

Korea

Malaysia

New Zealand

Singapore

Taiwan

Thailand

Dial

1-800-124-328

+800-3387

+001-800-65-6500

+0031-65-3616

+088-65-800-6500

1-800-1126

+0800-44-6542

1-800-481-6788

+0080-65-1062

+001-800-65-6500

8 – 55

Maxtor 81750A2 Specifications

DiamondMax™ 1750

87000A8, 86480A8, 85250A6

84320A5, 83500A4, 83240A4

82560A3, 81750A2

Before You Begin

Drive repair should be performed only at an authorized repair center. For repair information, contact the

Maxtor Customer Service Center at 800-2MAXTOR or 408-432-1700.

Contents

Section 1 — Introduction

Section 2 — Product Description

Section 3 — Product Specifications

Section 4 — Handling and Installation

Section 5 — AT Interface Description

Section 6 — Host Software Interface

Section 7 — Interface Commands

Section 8 — Service and Support

Glossary

Figures

Figure

Title

Page

SECTION 1

Introduction

Maxtor Corporation

Manual Organization

Abbreviations

Conventions

SECTION 2

Product Description

DiamondMax 1750 Key Features

Product Features

Functional / Interface

Cache Management

Major HDA Components

Subsystem Configuration

Jumper Location/Configuration

4092 Cylinder Limitation

SECTION 3

Product Specifications

Configuration

Performance

Physical Dimensions

Power Requirements (Average)

Power Mode Definitions

Environmental

Shock and Vibration

Reliability and Maintenance

Data Reliability

Acoustic Noise

EPA Energy Star Compliance

EMC/EMI

Standard Test Methods

Safety Regulatory Compliance

SECTION 4

Handling and Installation

Pre-formatted Drive

Important Notice

Hard Drive Handling Precautions

Electro-Static Discharge (ESD)

Unpacking and Inspection

Repacking

Physical Installation

Drive Jumper Settings

Mounting Drive in System

Attaching IDE Interface and Power Cables

Attaching System Cables

System Setup

Windows NT 4.0 Users

Hard Drive Preparation

SECTION 5

AT Interface Description

Interface Connector

Pin Description Summary

Pin Description Table

PIO Timing

DMA Timing

SECTION 6

Host Software Interface

Task File Registers