Major HDA Components | Maxtor 91792D7, 91024D4, 90750D3, 91280D5

PRODUCTDESCRIPTION

Major HDA Components

Drive Mechanism

A brush-less DC direct drive motor rotates the spindle at 7,200 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™ Plus 5120 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 giant 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 Plus 5120 drives.

Air Filtration System

All DiamondMax Plus 5120 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 Plus 5120 drives are designed to operate in a typical office environment 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

S.M.A.R.T.

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Maxtor 91792D7, 91024D4, 90750D3, 91280D5, 91536D6, 92048D8 manual Major HDA Components

Contents

HA RD Drive Produc T MA Nual DiamondMax Plus Revisions Manual No Before You Begin U T I O N Contents Product Specifications Handling and Installation AT Interface Description Host Software Interface Service and Support Interface CommandsGlossary Figures Introduction Maxtor CorporationManual Organization Abbreviations Signal Conventions ConventionsKey Words Numbering DiamondMax Plus 5120 Key Features Product Description Product Features Functional / Interface On-the-Fly Hardware Error Correction Code ECC Logical Block AddressingDefect Management Zone DMZ Software ECC Correction Read-Ahead Mode Cache ManagementBuffer Segmentation Automatic Write Reallocation AWR Major HDA Components Subsystem Configuration Jumper Location/ConfigurationCylinder Limitation Dual Drive Support Product Specifications Drive ConfigurationPerformance Specifications Models and Capacities Physical Dimensions Parameter Standard Metric Power Requirements Power Mode DefinitionsEPA Energy Star Compliance Environmental Limits Reliability Specifications Shock and Vibration Radiated Electromagnetic Field Emissions EMC Compliance Safety Regulatory ComplianceCanadian Emissions Statement Handling and Installation Hard Drive Handling PrecautionsPre-formatted Drive Important Notice Unpacking and Inspection Multi-pack Shipping Container Recommended Mounting Configuration Physical InstallationRepacking Before You Begin General Requirements Mounting Drive in System Attaching Interface Power Cables System Setup Hard Drive Preparation System Hangs During Boot Interface Connector SignalAT Interface Description Pin Description Summary PIN Name Signal Name Signal Description Pin Description Table Timing Parameters Mode PIO Timing DMA Timing Ultra DMA Timing Timing Parameters all times in nanoseconds Sustained Ultra DMA Data In Burst Device Terminating an Ultra DMA Data In Burst Initiating an Ultra DMA Data Out Burst Device Pausing an Ultra DMA Data Out Burst Device Terminating an Ultra DMA Data Out Burst Error Register Features RegisterHost Software Interface Task File Registers Sector Count Register Sector Number RegisterCylinder Number Registers Device/Head Register Command Register Command Name Command Code Parameters Used SDH Summary Control Diagnostic Registers Alternate Status RegisterDevice Control Register Digital Input Register Reset Handling Reset and Interrupt HandlingInterrupt Handling Interface Commands Set Feature Commands Read Sectors Read CommandsRead Verify Sectors Read DMA Read Multiple Write Commands Set Multiple ModeWrite Sectors Write Verify Sectors Write Multiple Write DMA Set Feature Commands Set Features Mode Power Mode Commands Sleep Mode Initialization Commands Identify Drive 15-8 = PIO data transfer mode = Write Cache enabled Initialize Drive Parameters Execute Drive Diagnostic Seek, Format and Diagnostic CommandsFormat Track A.R.T. Command Set Execute S.M.A.R.T Service and Support Service PolicyNo Quibble Service Support Customer Service MaxFax ServiceInternet Glossary Direct Access Direct Memory AccessError Correction Code ECC Error Free Hard Error Head Disk Assembly HDAFile Allocation Table FAT Flux Changes PER Inch Phase Locked Loop PLL Logical AddressLogical Block Addressing Logical Sector Random Access Memory RAM Read Gate SignalRecoverable Error Sector Pulse Signal UN-CORRECTABLE Error Unrecoverable ErrorWrite Gate Signal THIN-FILM Media