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Fujitsu MHV2060AT, MHV2100AT, MHV2080AT, MHV2120AT, MHV2040AT Execution timing of self-calibration

Models: MHV2040AT MHV2100AT MHV2060AT MHV2080AT MHV2120AT

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Theory of Device Operation

4.5.2 Execution timing of self-calibration

Self-calibration is performed once when power is turned on. After that, the disk drive does not perform self-calibration until it detects an error.

That is, self-calibration is performed each time one of the following events occur:

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When it passes from the power on for about 10 seconds except that the disk drive shifts to Idle mode, Standby mode, and Sleep mode by execution of any commands.

The number of retries to write or seek data reaches the specified value.

The error rate of data reading, writing, or seeking becomes lower than the specified value.

4.5.3 Command processing during self-calibration

This enables the host to execute the command without waiting for a long time, even when the disk drive is performing self-calibration. The command execution wait time is about maximum 72 ms.

When the error rate of data reading, writing, or seeking becomes lower than the specified value, self-calibration is performed to maintain disk drive stability.

If the disk drive receives a command execution request from the host while performing self-calibration, it stops the self-calibration and starts to execute the command. In other words, if a disk read or write service is necessary, the disk drive positions the head to the track requested by the host, reads or writes data, and then restarts calibration after about 3 seconds.

If the error rate recovers to a value exceeding the specified value, self-calibration is not performed.

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C141-E218

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Fujitsu MHV2060AT, MHV2100AT, MHV2080AT Execution timing of self-calibration, Command processing during self-calibration

Contents

MHV2120AT, MHV2100AT, MHV2080AT MHV2060AT, MHV2040AT Disk Drive Product Manual For Safe Operation Handling of This Manual Revision History This page is intentionally left blank Preface Overview of Manual Operating Environment Conventions for Alert MessagesConventions Liability Exception This page is intentionally left blank Important Alert Messages Important Alert ItemsDamage Interface cable connection This page is intentionally left blank Manual Organization Disk Drive Maintenance ManualDisk Drive Product Manual This page is intentionally left blank Contents Installation Conditions Theory of Device Operation Contents Interface 101 Write Multiple EXT X’39’ Option customizing Operations Glossary GL-1 Acronyms and Abbreviations AB-1 Index IN-1 Illustrations Figures Execution example of Read Multiple command Surface temperature measurement points and standard Tables 25 Relationship between combination of Identifier This page is intentionally left blank Device Overview Functions and performance FeaturesAdaptability Error correction and retry by ECC High resistance against shockConnection to ATA interface Data buffer Specifications summary Device SpecificationsSpecifications 1 Model and product number Specifications 2Examples of model names and product numbers Input Voltage Power RequirementsRipple Current Requirements and Power Dissipation Current and power dissipation Environmental Specifications Current fluctuation Typ. at +5 V when power is turned onPower on/off sequence Environmental specifications Acoustic noise specification Shock and vibration specificationAcoustic Noise Shock and Vibration Service life Data assurance in the event of power failureReliability Mean time between failures Mtbf Error Rate Unrecoverable read errorPositioning error Media Defects Advanced Power Management Advanced Power Management Advanced Power Management This page is intentionally left blank Device Configuration Device Configuration System Configuration ATA interface2 1 drive connection Read/write circuit 2 drives configuration 3 2 drives connection Installation Conditions Dimensions Dimensions Integration Guidance C141-E144 MountingOrientation Limitation of mounting FramePCA Location of breather Ambient temperature Service area Handling cautions Handling cautions Device connector Cable Connections Cable connector specifications Cable connector specificationsDevice connection FCI Power supply connector CN1 Jumper SettingsLocation of setting jumpers Factory default setting Master drive-slave drive setting Csel setting 14 Csel setting Power up in standby setting 16 Example 2 of cable select Theory of Device Operation Outline SubassembliesDisk Spindle Circuit Configuration Air filterServo circuit Spindle motor driver circuit Power supply configuration PCA Power-on Sequence Power-on operation sequence Self-calibration contents Self-calibration Command processing during self-calibration Execution timing of self-calibration Read/write Circuit Read/write preamplifier PreAMPWrite circuit Write precompensation AGC circuit Read circuitProgrammable filter circuit Digital PLL circuit FIR circuitD converter circuit Viterbi detection circuit Servo Control Servo control circuit Power amplifier Microprocessor unit MPUServo burst capture circuit A converter DAC Driver circuit VCM current sense resistor CSR Data-surface servo format Inner guard bandData area Outer guard band Physical sector servo configuration on disk surface Servo frame format Actuator motor control Operation to move the head to the reference cylinderSeek operation Track following operation Start mode Acceleration modeStable rotation mode Spindle motor control This page is intentionally left blank Interface Interface signals Physical Interface Signal assignment on the connector Signal assignment on the interface connectorDA1 PDIAG-, Cblid DA0 DA2 Dasp GND Mstr DiowStop Dior Pdiag CblidDasp Iordy Logical Interface I/O registers 1 I/O registersDA2 DA1 DA0 Command block registers Error register X’1F1’Data register X’1F0’ UNC Idnf SET Multiple Mode Features register X’1F1’Sector Count register X’1F2’ Cylinder Low register X’1F4’ Sector Number register X’1F3’Cylinder High register X’1F5’ Device/Head register X’1F6’ DEV HS3 HS2 HS1 HS0Status register X’1F7’ BSY Interface Control block registers Command register X’1F7’Alternate Status register X’3F6’ Host Commands Command code and parametersDevice Control register X’3F6’ HOB Srst Command code and parameters 1 Parameter Used Command code and parameters 2 EXT Write Multiple FUA EXT Flush Cache EXT Host Commands Command descriptions Host Commands Recalibrate X’10’ to X’1F’ Read Sectors X’20’ or X’21’ MSB 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’ Execute Device Diagnostic X’90’ Diagnostic code Host Commands Initialize Device Parameters X’91’ Download Microcode X’92’ Operation of Download Microcode Standby Immediate X’94’ or X’E0’ Unload Feature Unload Immediate Command Host Commands Standby X’96’ or X’E2’ Idle X’97’ or X’E3’ Interface Check Power Mode X’98’ or X’E5’ ’FF’ Sleep X’99’ or X’E6’ Smart X’B0 Features register values subcommands and functions 1 Features register values subcommands and functions 2 Smart Enable OperationsSmart Disable Operations Smart Read LOG ’DB’ Smart ENABLE/DISABLE Auto OFF-LINE Features register values subcommands and functions 3Smart Return Status Host Commands 1FF Format of device attribute value dataFormat of insurance failure threshold value data Data format version number Attribute ID Status Flag Current attribute valueAttribute value for the worst case so far Raw attribute value Self-test execution status 10 Off-line data collection status11 Self-test execution status Off-line data collection capability 12 Off-line data collection capabilityFailure prediction capability flag 13 Failure prediction capability flag Error logging capability 14 Error logging capabilityCheck sum Insurance failure threshold Smart error logging 16 Data format of Smart Summary Error Log Command data structure Error data structureTotal number of drive errors 17 Data format of Smart Comprehensive Error Log Smart self-test 18 Smart self-test log data format1FC Self-test number 19 Selective self-test log data structure Test spanCurrent LBA under test Current span under test 20 Selective self-test feature flags Feature flagsSelective self-test pending time min Device Configuration XB1 Device Configuration RestoreDevice Configuration Freeze Device Configuration Identify Device Configuration Restore FR = C0h Device Configuration Freeze Lock FR = C1hDevice Configuration Identify FR = C2h Device Configuration SET FR = C3h Interface 21 Device Configuration Identify data structure Interface Execution example of Read Multiple command Read Multiple X’C4’ MSB Write Multiple X’C5’ Interface SET Multiple Mode X’C6’ Interface 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’ 22 Information to be read by Identify Device command 1 ’3FFF’ 22 Information to be read by Identify Device command 2 Word Command without interrupt supports 2, 4, 8 and 16 sectors = Supports the Host Protected Area feature set = Supports the CFA Compact Flash Association feature set Interface Host Commands Interface Host Commands Word Bit Reserved Security level High, 1 Maximum SET Features X’EF’ 23 Features register values and settable modes’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 When the user password is selected When the master password is selectedSecurity UNLOCKX’F2’ Interface Security Erase Prepare X’F3’ Security Erase Unit X’F4’ Security Freeze Lock X’F5’ At command issuance I-O register contents 1F7hCM 26 Contents of security password Interface Read Native MAX Address X’F8’ SET MAX X’F9’ SET MAX Address 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 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 Host Commands 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 Error posting 27 Command code and parameters 1 27 Command code and parameters 2 PIO Data transferring commands from device to host Command ProtocolExecute 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 Other commands DMA data transfer commandsRead Multiple EXT Write Multiple EXT/FUA EXT Sleep Read DMA EXT Write DMA EXT/FUA EXT Indentify Device DMA Normal DMA data transfer Ultra DMA Feature Set Overview Ultra DMA data in commands Phases of operationInitiating an Ultra DMA data in burst Pausing an Ultra DMA data in burst Data in transfer Terminating an Ultra DMA data in burst Ultra DMA Feature Set Interface Ultra DMA data out commands Initiating an Ultra DMA data out burst Pausing an Ultra DMA data out burst Data out transfer Terminating an Ultra DMA data out burst Interface Ultra DMA CRC rules Series termination required for Ultra DMA 28 Recommended series termination for Ultra DMADIOR-HDMARDY-HSTROBE DIOW-STOP PIO data transfer TimingPIO data transfer timing 10 Multiword DMA data transfer timing mode Multiword data transfer Ultra DMA data transfer 11 Initiating an Ultra DMA data in burst Name Mode Comment Strobe 29 Ultra DMA data burst timing requirements 2 MIN MAX Mode Name Comment 30 Ultra DMA sender and recipient timing requirements Sustained Ultra DMA data in burst Dstrobe at deviceDD150 at device Dstrobe at host DD150 at host Host pausing an Ultra DMA data in burst DmarqDmack Hdmardy Device terminating an Ultra DMA data in burst Stop Host Host terminating an Ultra DMA data in burstDA0, DA1, DA2 CS0, CS1 16 Initiating an Ultra DMA data out burst Hstrobe at host DD150 at host Sustained Ultra DMA data out burstHstrobe at device DD150 at device Device DMACK- host Stop host DDMARDY- device Device pausing an Ultra DMA data out burstHstrobe host DD150 Host Host terminating an Ultra DMA data out burst 19 Host terminating an Ultra DMA data out burst Dmarq device DMACK- host Device terminating an Ultra DMA data out burstDD150 Host Master and slave devices are present 2-drives configuration Power-on and resetOnly master device is present Operations Device Response to the Reset Response to power-on Response to hardware reset Response to power-on Response to hardware reset Response to software reset Response to software reset Response to diagnostic command Response to diagnostic command Power Save Power save modeActive mode Active idle mode Standby mode Sleep mode Defect Processing Power commandsSpare area Sector slip processing Alternating processing for defective sectorsTrack slip processing Automatic alternating processing Automatic alternating processing Data buffer structure Read-ahead Cache8MB buffer 8,388,608 bytes Commands that are targets of caching Caching operationData that is a target of caching Invalidating caching-target data Smart Using the read segment buffer Miss-hit Sequential hit Full hit Partial hit Command that are targets of caching Write CacheCache operation Invalidation of cached data Status report in the event of an error Reset responseCaching function when power supply is turned on Enabling and disabling Write Cache This page is intentionally left blank Glossary Power save mode Rotational delayPIO Programmed input-output Positioning Status VCM This page is intentionally left blank Acronyms and Abbreviations This page is intentionally left blank Index AAM Index Host terminating ultra DMA data Read Sectors Command Read Native MAX Address Surface temperature measurement This page is intentionally left blank Comment Form Japan This page is intentionally left blank MHV2120AT, MHV2100AT, MHV2080AT, MHV2060AT, MHV2040AT C141-E218-01EN This page is intentionally left blank