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Fujitsu MHW2040AC, MHW2060AC manual Glossary

Models: MHW2060AC MHW2040AC

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Glossary

Actuator

Head positioning assembly. The actuator consists of a voice coil motor and head arm. If positions the read-write (R-W) head.

AT bus

A bus between the host CPU and adapter board

ATA (AT Attachment) standard

The ATA standard is for a PC AT interface regulated to establish compatibility between products manufactured by different vendors. Interfaces based on this standard are called ATA interfaces.

CHS addressing for drives

The CHS addressing collectively refers to the parameters defined by BIOS of the host system, which, for example, include the number of cylinders, the number of heads, and the number of sectors per track in the drive. The physical specifications of the drive do not always correspond to these parameters.

The CHS addressing cannot make full use of the physical storage area of these drives. To make the best use of these drives, the use of LBA addressing is required.

Command

Commands are instructions to input data to and output data from a drive.

Commands are written in command registers.

Data block

A data block is the unit used to transfer data. A data block normally indicates a single sector.

DE

Disk enclosure. The DE includes the disks, built-in spindle motor, actuator, heads, and air filter. The DE is sealed to protect these components from dust.

Master (Device 0)

The master is the first drive that can operate on the AT bus. The master is daisy- chained with the second drive which can operate in conformity with the ATA standard.

C141-E258

GL-1

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Fujitsu MHW2040AC, MHW2060AC manual Glossary

Contents

Disk Drives Product Manual MHW2060AC, MHW2040ACHandling of This Manual For Safe OperationMHW2060AC Revision HistoryThis page is intentionally left blank Overview of Manual PrefaceConventions for Alert Messages Operating EnvironmentConventions Representation of the data storage capacity in this manual Liability ExceptionThis page is intentionally left blank Important Alert Messages Important Alert ItemsThis page is intentionally left blank Disk Drives Maintenance Manual Manual OrganizationDisk Drives Product Manual This page is intentionally left blank Contents Theory of Device Operation Installation ConditionsInterface Contents101 Operations Alternating processing for defective sectors Glossary GL-1 Acronyms and Abbreviations AB-1 Index IN-1Figures Illustrations130 Tables Example of rewriting procedure of data 512 KBytes152 Device Overview Features Functions and performanceAdaptability Low noise and vibration Error correction and retry by ECCHigh resistance against shock Connection to ATA interfaceDevice Specifications Specifications summaryDrive-specific function specification MHW2060AC MHW2040AC Specifications 1Model and product number Specifications 2Examples of model names and product numbers MHV2060ACInput Voltage Power RequirementsRipple Slope of an input voltage at risePermissible level −0.2 Current and power dissipation Current Requirements and Power DissipationEnvironmental Specifications Current fluctuation Typ. at +5 V when power is turned onEnvironmental specifications Shock and vibration specifications Acoustic noise specificationAcoustic Noise Shock and VibrationData assurance in the event of power failure Service lifeReliability Mean time between failures MtbfUnrecoverable read error Error RatePositioning error Media DefectsRecommended power-off sequence Advanced Power Management APMAdvanced Power Management Advanced Power Management APMThis page is intentionally left blank Device Configuration Device Configuration ATA interface System Configuration2 1 drive connection Read/write circuit3 2 drives connection 2 drives configurationInstallation Conditions Dimensions DimensionsOrientation MountingFrame Limitation of mountingLocation of breather Ambient temperature Handling cautions Service areaHandling cautions Cable Connections Device connectorCable connector specifications Cable connector specificationsDevice connection FCIJumper Settings Power supply connector CN1Location of setting jumpers Master drive-slave drive setting Factory default setting13 Csel setting Csel setting15 Example 2 of cable select Power up in standby settingThis page is intentionally left blank Theory of Device Operation Subassemblies OutlineDisk SpindleAir filter Circuit ConfigurationServo circuit Spindle motor driver circuitPower supply configuration MCU MCU & HDC & RDCRDC SVCPower-on operation sequence Power-on SequenceSelf-calibration Self-calibration contentsExecution timing of self-calibration Command processing during self-calibrationRead/write preamplifier PreAMP Read/write CircuitWrite circuit Write precompensationRead circuit AGC circuitProgrammable filter circuit FIR circuit Digital PLL circuitD converter circuit Viterbi detection circuitServo control circuit Servo ControlMicroprocessor unit MPU Power amplifierServo burst capture circuit A converter DACVCM current sense resistor CSR Driver circuitInner guard band Data-surface servo formatData area Outer guard bandPhysical sector servo configuration on disk surface Servo frame format Operation to move the head to the reference cylinder Actuator motor controlSeek operation Track following operationAcceleration mode Start modeStable rotation mode Spindle motor controlThis page is intentionally left blank Interface Physical Interface Interface signalsSignal assignment on the interface connector Signal assignment on the connectorDA1 PDIAG-, Cblid DA0 DA2 Dasp GNDDiow MstrStop DiorCblid PdiagDasp IordyLogical Interface 1 I/O registers I/O registersDA2 DA1 DA0 Error register X’1F1’ Command block registersData register X’1F0’ UNCFeatures register X’1F1’ SET Multiple ModeSector Count register X’1F2’ Sector Number register X’1F3’ Cylinder Low register X’1F4’Cylinder High register X’1F5’ DEV HS3 HS2 HS1 HS0 Device/Head register X’1F6’Status register X’1F7’ BSYInterface Command register X’1F7’ Control block registersAlternate Status register X’3F6’ Command code and parameters Host CommandsDevice Control register X’3F6’ HOB SrstCommand code and parameters 1 Command NameParameter Used EXT Write Multiple FUA EXT Flush Cache EXT Command code and parameters 2Host Commands Command descriptions Host Commands Recalibrate X’10’ to X’1F’ MSB Read Sectors X’20’ or X’21’End head No. / LBA MSB Write Sectors X’30’ or X’31’ 1F7HST Status information 1F6HDH Write Verify X’3C’ Read Verify Sectors X’40’ or X’41’ Seek X’70’ to X’7F’ Diagnostic code Execute Device Diagnostic X’90’Host Commands Initialize Device Parameters X’91’ Download Microcode X’92’ Operation of Download Microcode Standby Immediate X’94’ or X’E0’ Unload Feature Host Commands Standby X’96’ or X’E2’ Idle X’97’ or X’E3’ 1F4HCL 1F3HSN 1F2HSC 1F1HER Error information C141-E258 Check Power Mode X’98’ or X’E5’ ’FF’Sleep X’99’ or X’E6’ Interface Smart X’B0 Features register values subcommands and functions 1 Smart Enable Operations Features register values subcommands and functions 2Smart Disable Operations Smart Read LOGFeatures register values subcommands and functions 3 ’DB’ Smart ENABLE/DISABLE Auto OFF-LINESmart Return Status At command issuance I-O registers setting contents 1F7 HCM Format of device attribute value data 1FFFormat of insurance failure threshold value data Attribute ID Data format version numberCurrent attribute value Status FlagAttribute value for the worst case so far Raw attribute value10 Off-line data collection status Self-test execution status11 Self-test execution status 12 Off-line data collection capability Off-line data collection capabilityFailure prediction capability flag 13 Failure prediction capability flag14 Error logging capability Error logging capabilityCheck sum Insurance failure thresholdSmart error logging 16 Data format of Smart Summary Error Log Error data structure Command data structureTotal number of drive errors 17 Data format of Smart Comprehensive Error Log18 Smart self-test log data format Smart self-test1FC Self-test numberTest span 19 Selective self-test log data structureCurrent LBA under test Current span under testFeature Flags 20 Selective self-test feature flagsSelective Self-test pending time min Device Configuration Restore Device Configuration XB1Device Configuration Freeze Device Configuration IdentifyDevice Configuration Freeze Lock FR = C1h Device Configuration Restore FR = C0hDevice Configuration Identify FR = C2h Device Configuration SET FR = C3hInterface 21 Device Configuration Identify data structure 1 21 Device Configuration Identify data structure 2 Read Multiple X’C4’ Execution example of Read Multiple commandMSB Write Multiple X’C5’ Interface SET Multiple Mode X’C6’ 1F5HCH Read DMA X’C8’ or X’C9’ End head No. / LBA MSB Write DMA X’CA’ or X’CB’ Interface Read Buffer X’E4’ Flush Cache X’E7’ Write Buffer X’E8’ Identify Device X’EC’ Identify Device DMA X’EE’ ’3FFF’ 22 Information to be read by Identify Device command 122 Information to be read by Identify Device command 2 3FFF Command without interrupt supports 2, 4, 8 and 16 sectors = Supports the Host Protected Area feature set Option customizing Word Bit C141-E258 Interface Write Stream EXT Interface Host Commands Word Bit Reserved Security level High, 1 Maximum 23 Features register values and settable modes SET Features X’EF’’BB’ ’CC’Data Transfer Mode Advanced Power Management APM Automatic Acoustic Management AAM 24 Contents of Security SET Password data At command issuance I-O register contents 1F7hCM 1F6hDH When the master password is selected When the user password is selectedSecurity UNLOCKX’F2’ Interface Security Erase Prepare X’F3’ Security Erase Unit X’F4’ Security Freeze Lock X’F5’ 1F4hCL 1F3hSN 1F2hSC 1F1hER Error information 100 C141-E258 26 Contents of security password Interface Read Native MAX Address X’F8’ SET MAX Address SET MAX X’F9’SET MAX SET Password FR = 01h SET MAX Lock FR = 02h SET MAX Unlock FR = 03h SET MAX Freeze Lock FR = 04h Host Commands Read Sectors EXT X’24’ Option customizing Description Read DMA EXT X’25’ Option customizing Description HOB=0HOB=1 Error reporting conditions Read Multiple EXT X’29’ Option customizing Description Read LOG EXT X2F Optional command Customize Description Host Commands Write Sectors EXT X’34’ Option customizing Description Write DMA EXT X’35’ Option customizing Description SET MAX Address EXT X’37’ Option customizing Description SET MAX LBA Write Multiple EXT X’39’ Option customizing Description Write DMA FUA EXT X’3D’ Option customizing Description Write LOG EXT X’3F’ Optional command Customize Description Number of sectors to be written to the specified log Read Verify Sectors EXT X’42 Option customizing Description Write Multiple FUA EXT X’CE’ Option customizing Description Flush Cache EXT X’EA’ Option customizing Description 27 Command code and parameters 1 Error posting27 Command code and parameters 2 Command Protocol PIO Data transferring commands from device to hostExecute Device Diagnostic Initialize Device Parameters Read Sectors Command protocol Protocol for command abort PIO Data transferring commands from host to device Write Sectors command protocol Commands without data transfer DMA data transfer commands Other commandsRead Multiple EXT Write Multiple EXT/FUA EXT Sleep Read DMA EXT Write DMA EXT/FUA EXT Indentify Device DMANormal DMA data transfer Overview Ultra DMA Feature SetPhases of operation Ultra DMA data in commandsInitiating an Ultra DMA data in burst Data in transfer Pausing an Ultra DMA data in burstTerminating an Ultra DMA data in burst Ultra DMA Feature Set Interface Initiating an Ultra DMA data out burst Ultra DMA data out commandsData out transfer Pausing an Ultra DMA data out burstTerminating an Ultra DMA data out burst Interface Ultra DMA CRC rules 28 Recommended series termination for Ultra DMA Series termination required for Ultra DMADIOR-HDMARDY-HSTROBE DIOW-STOPPIO data transfer TimingMultiword data transfer 10 Multiword DMA data transfer timing mode11 Initiating an Ultra DMA data in burst Ultra DMA data transferStrobe Name Mode CommentMIN MAX 29 Ultra DMA data burst timing requirements 230 Ultra DMA sender and recipient timing requirements Mode Name CommentAt device Sustained Ultra DMA data in burstDD150 At hostDmarq Host pausing an Ultra DMA data in burstDmack HdmardyDmarq device Device terminating an Ultra DMA data in burstHost Dstrobe device DD150Host terminating an Ultra DMA data in burst Dstrobe deviceDA0, DA1, DA2 CS0, CS1 16 Initiating an Ultra DMA data out burst Sustained Ultra DMA data out burst Hstrobe at host DD150 at hostDD150 At device Device pausing an Ultra DMA data out burst Device DMACK- host Stop host DDMARDY- deviceHstrobe host DD150 host 19 Host terminating an Ultra DMA data out burst Host terminating an Ultra DMA data out burstDmarq device DMACK- host Device terminating an Ultra DMA data out burstPower-on and reset Master and slave devices are present 2-drives configurationOnly master device is present Operations Response to power-on Device Response to the ResetResponse to power-on Response to hardware resetResponse to hardware reset Response to software reset Response to software resetResponse to diagnostic command Response to diagnostic commandPower save mode Power SaveActive mode Active idle modeSleep mode Standby modePower commands Defect ProcessingSpare area Alternating processing for defective sectors Sector slip processingTrack slip processing Automatic alternating processing Automatic alternating processingData buffer structure Read-ahead Cache8MB buffer 8,388,608 bytes Read Sectors EXT Read Multiple EXT Read DMA EXTCaching operation Commands that are targets of cachingData that is a target of caching Invalidating caching-target dataSmart Miss-hit Using the read segment bufferSequential hit Full hit Write Cache Command that are targets of cachingCache operation Invalidation of cached dataReset response Status report in the event of an errorCaching function when power supply is turned on Enabling and disablingOperations Glossary Rotational delay Power save modePIO Programmed input-output PositioningVCM StatusThis page is intentionally left blank Acronyms and Abbreviations This page is intentionally left blank AAM IndexIndex Host pausing ultra DMA data Read Native MAX Address Read Sectors CommandSurface temperature measurement This page is intentionally left blank Japan Comment FormThis page is intentionally left blank C141-E258-03EN Page