Maxtor DIAMONDMAX 90910D8, DIAMONDMAX 90625D5, DIAMONDMAX 90750D6, DIAMONDMAX 90500D4, DIAMONDMAX 90840D7 User Manual

This document is a condensed version of the full Product Reference Manual.

This version only includes the Maxtor Information about the Product. Information
that can be found in the ANSI specification is not included in this document to
reduce its over all size. Also eliminated are the Table of Contents and Glossary.

This condensed version is created to allow faster downloading from Maxtor's
Internet home page and MaxFax services.

DiamondMax™ Plus 2500

91000D8, 90910D8, 90875D7, 90840D7
90750D6, 90625D5 and 90500D4

Part #1402/A

All material contained herein Copyright © 1998 Maxtor Corporation.
DiamondMax™, DiamondMax™ 1280, DiamondMax™ 1750, Diamond­Max™ 2160, DiamondMax™ 2880, DiamondMax™ Plus 2500 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. 5/98

Corporate Headquarters

510 Cottonwood Drive
Milpitas, California 95035

Tel: [phone]
Fax: [phone]

Research and Development
Engineering Center

2190 Miller Drive
Longmont, Colorado 80501

Tel: [phone]
Fax: [phone]

Revisions Manual No. 1402

VER.ONCENOITCESNOITPIRCSED ETAD

AC60097llA.esaelerlaitinI 89/92/50

Before You Begin

Thank you for your interest in the Maxtor DiamondMax™ Plus 2500 AT hard disk drives. This manual provides
technical information for OEM engineers and systems integrators regarding the installation and use of DiamondMax
hard drives

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

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

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

CAUTION

Maxtor DiamondMax Plus 2500 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

2

3

4

5

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.

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

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

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.

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 PLUS 2500 – 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™ Plus 2500 is the latest addition to our family of
high performance desktop hard drives, the DiamondMax™ 3400, DiamondMax™ 2880 and DiamondMax™
2160 series hard drives deliver industry-leading capacity, performance and value for many PC applications.

Support

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

®

Service guarantee. One call – or a visit to our home page on the Internet

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

VRBBANOITPIRCSEDVRBBANOITPIRCSED

ATAtnemhcattaTABMetybagem

ipbhcnirepstibces/stibMdnocesrepstibagem

SHCrotces-daeh-rednilycces/BMdnocesrepsetybagem

bdslebicedzHMztrehagem

ABddethgiewA,slebicedsmdnocesillim

AMDsseccayromemtceridBSMtibtnacifingistsom

CCEedocnoitcerrocrorreVmstlovillim

icfhcnirepsegnahcxulfsnsdnocesonan

GnoitareleccaOIPtuptuo/tupnidemmargorp

BGetybagigMPRetunimrepsnoitulover

zHztrehipthcnirepskcart

BKetybolikAMDUsseccayromemtceridartlu

ABL)gni(sserddakcolblacigolcesµdnocesorcim

BSLtibtnacifingistsaelVstlov

AmserepmaillimWsttaw

1 – 4

DIAMONDMAX PLUS 2500 – 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 – 5

PRODUCT DESCRIPTION

SECTION 2

Product Description

Maxtor DiamondMax™ Plus 2500 AT disk drives are 1-inch high, 3.5-inch diameter random access storage
devices which incorporate an on-board ATA/Ultra DMA 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 9.0 ms access times make these performance series disk drives especially
well-suited to high speed desktop and server applications.

DiamondMax Plus 2500 Key Features

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

Supports Ultra DMA Mode 2 for up to 33 MB/sec data transfers

512 KB buffer with multi-adaptive cache manager

9.0 ms seek time

Zone density and I.D.-less recording

High reliability with

Outstanding shock resistance at 200 Gs

High durability with 50 K 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 106 or one million bytes (1,000,000) and one gigabyte as 109 or one billion bytes (1,000,000,000).

>

500,000 hour MTBF

2 – 1

PRODUCT DESCRIPTION

Product Features

Functional / Interface

Maxtor DiamondMax™ Plus 2500 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.

UltraDMA - Mode 2

Maxtor DiamondMax Plus 2500 hard drives fully comply with the new ANSI Ultra DMA protocol, which
greatly improves overall AT interface performance by significantly improving burst and sustained data
throughput.

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 Plus 2500 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 Plus 2500 drives power-up in a translate mode:

LEDOMLYCDHTPSenoZLmocPWYTICAPACABLXAM

8D00019093,916136)*()*(BG00.01021,545,91

8D01909546,716136)*()*(BG01.9061,687,71

7D57809669,616136)*()*(BG57.8827,101,71

7D04809772,616136)*()*(BG04.8612,704,61

6D05709245,416136)*()*(BG05.7633,856,41

5D52609911,216136)*()*(BG52.6259,512,21

4D00509596,96136)*()*(BG00.5065,277,9

(*) The fields LZone (Landing Zone) and WPcom (Write Pre-comp) are not used by the Maxtor hard drive
and the values may be either 0 or the values set by the BIOS. All capacities listed in the above table are based
on 106 or one million bytes.

2 – 2

PRODUCT DESCRIPTION

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

where HSCA = Host Sector Address, HHDA = Host Head Address

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

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 or store the data on the disk and
for other drive related operations.

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)

33 bits, single burst, guaranteed

Software ECC Correction

81 bits, single burst, guaranteed
33 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.

2 – 3