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Fujitsu MHV2080BH, MHV2100BH, MHV2040BH, MHV2060BH manual Invalidating caching-target data

Models: MHV2100BH MHV2040BH MHV2060BH MHV2080BH

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6.4 Read-ahead Cache

(3) Invalidating caching-target data

Data that is a target of caching on the data buffer is invalidated under the following conditions:

1)-1 Any command other than the following commands is issued. (All caching- target data is invalidated.)

READ BUFFER

WRITE BUFFER

RECALIBRATE

FORMAT TRACK

SET FEATURES

SECURITY ERASE UNIT

DEVICE CONFIGURATION

DOWNLOAD MICROCODE

UNSUPPORT COMMAND (INVALID COMMAND) 1)-2 Commands that partially invalidate caching data

READ DMA/READ MULTIPLE/READ SECTOR(S)

READ DMA EXT/READ MULTIPLE EXT/READ SECTOR(S) EXT

READ FP DMA QUEUED

WRITE DMA/WRITE MULTIPLE/WRITE SECTOR(S)

WRITE DMA EXT/WRITE MULTIPLE EXT/WRITE SECTOR(S) EXT

WRITE DMA FUA EXT/WRITE MULTIPLE FUA EXT

WRITE FP DMA QUEUED

SMART

2)A COMRESET is issued or the power is turned off.

3)When HOST CRC ERROR has occurred.

C141-E224

6-15

Image 249

Fujitsu MHV2080BH, MHV2100BH, MHV2040BH, MHV2060BH manual Invalidating caching-target data

Contents

Disk Drives Product Manual MHV2100BH, MHV2080BH MHV2060BH, MHV2040BHHandling of This Manual For Safe OperationRevision History This page is intentionally left blank Overview of Manual PrefaceConventions for Alert Messages Operating EnvironmentConventions Liability Exception This 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 Device Configuration Installation ConditionsTheory of Device Operation Interface Contents3.1 101 Operations Power Save Controlled by Interface Power Management IPMGlossary GL-1 Acronyms and Abbreviations AB-1 Index IN-1 Figures IllustrationsResponse to power-on when the host is powered on Examples of model names and product numbers TablesRelationship between combination of Identifier This page is intentionally left blank Device Overview Features Functions and performanceAdaptability Low noise and vibration Error correction and retry by ECCHigh resistance against shock Connection to Sata interfaceSpecifications summary Device SpecificationsSpecifications 1 MHV2100BH MHV2080BH MHV2060BH MHV2040BHModel and product number Specifications 2MHV2100BH Examples of model names and product numbersPower Requirements Input VoltageRipple Current and power dissipation Current Requirements and Power DissipationCurrent fluctuation Typ. at +5 V when power is turned on Environmental SpecificationsPower on/off sequence Environmental specificationsShock and vibration specification 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 ManagementAdvanced Power Management Interface Power Management IPM Host-initiated interface power management HipmDevice-initiated interface power management Dipm Elimination of Hazardous Substances Interface power managementThis page is intentionally left blank Device Configuration Device Configuration Sata interface System ConfigurationDrive connection Read/write circuitThis page is intentionally left blank Installation Conditions Dimensions DimensionsMounting Integration Guidance C141-E144Orientation Frame Limitation of mountingPCA Location of breather Ambient temperature Handling cautions Service areaESD Sumitomo 3MHios Connections with Host System Device connectorConnector specifications for host system Signal segment and power supply segmentRecommended connector specifications for the host system Sata interface cable connection This page is intentionally left blank Theory of Device Operation Subassemblies OutlineDisk SpindleAir filter Circuit ConfigurationServo circuit Spindle motor driver circuitPower supply configuration PCA Power-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 signalsComreset / Cominit Comwake5VDC/GND Out of band signaling Signal interface regulationCont AlignEOF PmackROK RIPRrdy SOFElectrical specifications Physical Layer Electrical Requirements 1/3FER Physical Layer Electrical Requirements 2/3 Physical Layer Electrical Requirements 3/3 Connector pinouts Connector pinoutsStaggered Spin-up 5 P11 functionDriving Ready LED Requirements for P11 as an output pinExample of the circuit for driving Ready LED Hot Plug Logical Interface Conceptual diagram of communication layersPhysical layer Communication layersLink layer Transport layerShadow Block Register Outline of the Shadow Block RegisterFIS types Outline of the frame information structure FISRegister Host to Device Register Host to Device FIS layoutDMA Active Device to Host Register Device to HostTAG DMA Setup Device to Host or Host to Device BidirectionalBist combinations Bist Active BidirectionalData FIS Bidirectional layout Data Host to Device or Device to Host BidirectionalShadow block registers Error FieldUNC SfrrSector Count Field exp Features Field expSector Number Field exp Cylinder Low Field expDevice/Head Field Cylinder High Field expHS3 HS2 HS1 HS0 HS3Bit Error ERR bit Bit Device Write Fault DF bitStatus field Bit 7 Busy BSY bitBit 2 Software Reset Srst Command FieldDevice Control Field EStatus FieldHost Commands Command code and parametersCommand code and parameters 1/3 Command code and parameters 2/3 Command code and parameters 3/3 Command descriptions Recalibrate X’10’ to X’1F’ Error reporting conditionsRead Sectors X’20’ or X’21’ LBA LBA LSBWrite Sectors X’30’ or X’31’ 00 *1 Error information Write Verify X’3C’ Host Commands Read Verify Sectors X’40’ or X’41’ Host Commands Seek X’70’ to X’7F’ Diagnostic code Execute Device Diagnostic X’90’Initialize Device Parameters X’91’ Operation of Download Microcode Download Microcode X’92’Error reporting conditions Standby Immediate X’94’ or X’E0’ Idle Immediate X’95’ or X’E1’ Standby X’96’ or X’E2’ Idle X’97’ or X’E3’ Host Commands ’FF’ Check Power Mode X’98’ or X’E5’Sleep X’99’ or X’E6’ ComresetSmart X’B0’ 10 Features Field values subcommands and functions 1/3 Smart Enable Operations 10 Features Field values subcommands and functions 2/3Smart Disable Operations Smart Read LOG10 Features Field values subcommands and functions 3/3 ’DB’ Smart ENABLE/DISABLE Auto OFF-LINESmart Return Status Key C2h Key 4Fh 12 Format of guarantee failure threshold value data 11 Format of device attribute value data1FF Attribute ID Data format version numberCurrent attribute value Status FlagAttribute value for the worst case so far Raw attribute value13 Off-line data collection status Self-test execution status14 Self-test execution status 17 Drive error logging capability 15 Off-line data collection capability16 Failure prediction capability flag Smart error logging Guarantee failure thresholdChecksum 18 Log Directory Data Format19 Data format of Smart Summary Error Log 1/2 Command data structure 19 Data format of Smart Summary Error Log 2/2Error data structure Total number of drive errorsSmart Self-Test 20 Data format of Smart Comprehensive Error Log1FC 21 Smart self-test log data formatSelf-test number Self-test index22 Selective self-test log data structure Test SpanCurrent LBA under test 23 Selective self-test feature flags Feature FlagsCurrent Span under test Selective Self-test pending time minDevice Configuration Restore Device Configuration XB1Device Configuration Freeze Device Configuration IdentifyDevice Configuration Freeze Lock Features Field = C1h Device Configuration Restore Features Field = C0hDevice Configuration SET Features Field = C3h Device Configuration Identify Features Field = C2hWord Value Content 24 Device Configuration Identify data structure 1/224 Device Configuration Identify data structure 2/2 Read Multiple X’C4’ 10 Execution example of Read Multiple command LBA LSB Write Multiple X’C5’ At command issuance Shadow Block Registers setting contents SET Multiple Mode X’C6’ Interface Read DMA X’C8’ or X’C9’ LBA 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’ 25 Information to be read by Identify Device command 1/325 Information to be read by Identify Device command 2/3 MHV2100BH MHV2080BH 25 Information to be read by Identify Device command 3/3Host Commands Word 59 Transfer sector count currently set by READ/WRITE Host Commands Interface Bit Interface Device always returns the fixed value indicated on the left Interface 26 Features field values and settable modes 1/2 SET Features X’EF’26 Features field values and settable modes 2/2 Data Transfer Mode Advanced Power Management APM Automatic Acoustic Management AAM Serial ATA Functions27 Contents of Security SET Password data Error reporting conditions When the master password is selected When the user password is selectedSecurity UNLOCKX’F2’ Host Commands Security Erase Prepare X’F3’ Security Erase Unit X’F4’ Security Freeze Lock X’F5’ Error reporting conditions 29 Contents of security password Error reporting conditions Lbalsb Read Native MAX Address X’F8’SET MAX Address SET MAX X’F9’SET MAX SET Password Features Field = 01h Password information SET MAX Lock Features Field = 02h SET MAX Unlock Features Field = 03h SET MAX Freeze Lock Features Field = 04h Read Sector S EXT X’24’ Description Read DMA EXT X’25’ Description Read Native MAX Address EXT X’27’ Read Multiple EXT X’29’ Read LOG EXT X2F Sector offset 31 Tag field information 30 Data format of Read Log Ext log page 10h33 Counter Identifier information 32 Data format of Read Log Ext log page 11hWrite Sector S EXT X’34’ Description Write DMA EXT X’35’ Description SET MAX Address EXT X’37’ SET MAX LBA Write Multiple EXT X’39’ Write LOG EXT X3F Error information C141-E224 137 Read Verify Sector S EXT X’42’ Flush Cache EXT X’EA’ Write Multiple FUA EXT XCE Write DMA FUA EXT X3D Read FP DMA Queued Write FP DMA Queued 34 Command code and parameters 1/2 Error postingCommand Name Sfrw Sfrr34 Command code and parameters 2/2 TK0NFDWF Non-data command protocol Command ProtocolExecute Device Diagnostic Initialize Device Parameters DataHost PIO data-in command protocol 12 PIO data-in command protocol PIO data-out command protocol13 PIO data-out command protocol Read DMA EXT Identfy Device Identfy Device DMA DMA data-in command protocolWrite DMA EXT FUA EXT DMA data-out command protocolRead FP DMA Queued Write FP DMA Queued Native Command Queuing protocol16 Read FP DMA Queued command protocol 17 Write FP DMA Queued command protocol 18 Power-on sequence Power-on and Comreset19 Comreset sequence This page is intentionally left blank Operations Response to power-on Reset and DiagnosisReset and Diagnosis Response to Comreset Response to ComresetComreset preservation requirements Software settings preservationSET Address MAX EXT Response to a software reset Response to a software resetPower save mode Power SaveActive mode Active idle modeSleep mode Standby modePower commands Power Save Controlled by Interface Power Management IPM Power save mode of the interfacePartial mode Slumber mode Read-ahead Cache Data buffer structureMB buffer Commands that are targets of caching Caching operationData that is a target of caching Invalidating caching-target data Miss-hit Using the read segment bufferFull hit Sequential hitHAP end location of the previous read command Partial hit Write Cache Command that are targets of cachingCache operation Invalidation of cached dataComreset and software reset response Status report in the event of an errorCashing function when power supply is turned on Enabling and disablingThis page is intentionally left blank Glossary Host receptacle Power save modeMaster Device PIO Programmed input-outputSeek time Rotational delaySerial-ATA Slave DeviceThis page is intentionally left blank Acronyms and Abbreviations This page is intentionally left blank Caching IndexIndex Example of model name and product Mean time between failure Mtbf 4-3 Read Native MAX AddressStatus, off-line data collection Japan Comment FormThis page is intentionally left blank C141-E224-01EN This page is intentionally left blank