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Fujitsu MHV2120BH, MHV2100BH, MHV2080BH, MHV2040BH, MHV2060BH manual

Models: MHV2100BH MHV2040BH MHV2120BH MHV2060BH MHV2080BH

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4.6 Read/write Circuit

(3) FIR circuit

This circuit is 10-tap sampled analog transversal filter circuit that equalizes the head read signal to the Modified Extended Partial Response (MEEPR) waveform.

(4) A/D converter circuit

This circuit changes Sampled Read Data Pulse from the FIR circuit into Digital Read Data.

(5) Viterbi detection circuit

The sample hold waveform output from the flash digitizer circuit is sent to the Viterbi detection circuit. The Viterbi detection circuit demodulates data according to the survivor path sequence.

4.6.4 Digital PLL circuit

The drive uses constant density recording to increase total capacity. This is different from the conventional method of recording data with a fixed data transfer rate at all data area. In the constant density recording method, data area is divided into zones by radius and the data transfer rate is set so that the recording density of the inner cylinder of each zone is nearly constant. The drive divides data area into 30 zones to set the data transfer rate.

The MPU set the data transfer rate setup data (SD/SC) to the RDC block that includes the Digital PLL circuit to change the data transfer rate.

C141-E224

4-11

Image 65

Fujitsu MHV2120BH, MHV2100BH, MHV2080BH, MHV2040BH, MHV2060BH manual

Contents

Disk Drives Product Manual MHV2120BH, MHV2100BH, MHV2080BH MHV2060BH, MHV2040BHHandling of This Manual For Safe OperationRevision History This page is intentionally left blank Overview of Manual PrefaceConventions Conventions for Alert MessagesOperating Environment Liability Exception This page is intentionally left blank Important Alert Messages Important Alert ItemsThis page is intentionally left blank Disk Drives Product Manual Disk Drives Maintenance ManualManual Organization This page is intentionally left blank Contents Theory of Device Operation Device ConfigurationInstallation Conditions Interface ContentsXii C141-E224 104 GL-1 OperationsAcronyms and Abbreviations AB-1 IN-1Figures IllustrationsResponse to power-on Examples of model names and product numbers Tables133 Device Overview Adaptability FeaturesFunctions and performance Low noise and vibration Error correction and retry by ECCHigh resistance against shock Connection to Sata interfaceSpecifications 1/2 Device SpecificationsSpecifications summary Examples of model names and product numbers Model and product numberInput Voltage Power RequirementsRipple Slope of an input voltage at riseNegative voltage at +5 V when power is turned off 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 VibrationMean time to repair Mttr Service lifeData assurance in the event of power failure Unrecoverable read error Error RatePositioning error Media DefectsRecommended power-off sequence Advanced Power Management APMAdvanced Power Management Device-initiated interface power management Dipm Interface Power Management IPMHost-initiated interface power management Hipm Restriction of Use of Hazardous Substances Interface power managementDevice Configuration Device Configuration Sata interface System ConfigurationDrive connection Read/write circuitThis page is intentionally left blank Installation Conditions Dimensions DimensionsOrientation MountingIntegration Guidance C141-E144 PCA FrameLimitation of mounting Location of breather Ambient temperature Handling cautions Service areaHios ESDSumitomo 3M Connections with Host System Device connectorRecommended connector specifications for the host system Connector specifications for host systemSignal segment and power supply segment 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 precompensationProgrammable filter circuit Read circuitAGC 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 signals5VDC/GND Comreset / CominitComwake Out of band signaling Signal interface regulationCont AlignEOF PmackROK RIPRrdy SOFFER Electrical specificationsPhysical Layer Electrical Requirements 1/3 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 PIO Setup Device to HostData Host to Device or Device to Host Bidirectional Interface 11 Set Device Bits FIS Set Device Bits Device to HostShadow 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 FieldCommand code and parameters 1/3 Host CommandsCommand code and parameters 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’ Interface Unload Feature Unload Immediate Command Standby X’96’ or X’E2’ Idle X’97’ or X’E3’ Interface ’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 LOG’DA’ Smart Return Status 10 Features Field values subcommands and functions 3/3’DB’ Smart ENABLE/DISABLE Auto OFF-LINE Key C2h 1FF 12 Format of guarantee failure threshold value data11 Format of device attribute value data Attribute ID Data format version numberCurrent attribute value Status FlagAttribute value for the worst case so far Raw attribute value14 Self-test execution status 13 Off-line data collection statusSelf-test execution status 16 Failure prediction capability flag 17 Drive error logging capability15 Off-line data collection capability 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 LogSelf-test index Self-test numberCurrent LBA under test 22 Selective self-test log data structureTest Span 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’ 12 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’ Host Commands Read DMA X’C8’ or X’C9’ LBA Write DMA X’CA’ or X’CB’ Host Commands 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 MHV2120BH MHV2100BH MHV2080BH MHV2060BH MHV2040BH ’3FFF’ 25 Information to be read by Identify Device command 3/3Interface Command without interrupt supports 2, 4, 8 and 16 sectors Interface Host Commands Interface Host Commands Device always returns the fixed value indicated on the left Host Commands 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 Serial ATA Functions Automatic Acoustic Management AAM 27 Contents of Security SET Password data Error reporting conditions Security UNLOCKX’F2’ When the master password is selectedWhen the user password is selected 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 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 SfrrDWF 34 Command code and parameters 2/2TK0NF Non-data command protocol Command ProtocolExecute Device Diagnostic Initialize Device Parameters DataHost PIO data-in command protocol 14 PIO data-in command protocol PIO data-out command protocol15 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 protocol18 Read FP DMA Queued command protocol 19 Write FP DMA Queued command protocol 20 Power-on sequence Power-on and Comreset21 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 Partial mode Power Save Controlled by Interface Power Management IPMPower save mode of the interface Slumber mode MB buffer Read-ahead CacheData buffer structure Data that is a target of caching Commands that are targets of cachingCaching operation 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-E224-02EN MHV2120BH, MHV2100BH, MHV2080BH, MHV2060BH, MHV2040BHPage