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Fujitsu MHV2060BH, MHV2100BH, MHV2080BH manual Digital PLL circuit, FIR circuit, D converter circuit

Models: MHV2100BH MHV2040BH 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 67

Fujitsu MHV2060BH, MHV2100BH, MHV2080BH Digital PLL circuit, FIR circuit, D converter circuit, Viterbi detection circuit

Contents

Disk Drives Product Manual MHV2100BH, MHV2080BH MHV2060BH, MHV2040BH Handling of This Manual For Safe Operation Revision History This page is intentionally left blank Overview of Manual Preface Operating Environment Conventions for Alert MessagesConventions Liability Exception This page is intentionally left blank Important Alert Messages Important Alert Items This page is intentionally left blank Manual Organization Disk Drives Maintenance ManualDisk Drives Product Manual This page is intentionally left blank Contents Installation Conditions Device ConfigurationTheory of Device Operation Interface Contents 3.1 101 Operations Power Save Controlled by Interface Power Management IPM Glossary GL-1 Acronyms and Abbreviations AB-1 Index IN-1 Figures Illustrations Response to power-on when the host is powered on Examples of model names and product numbers Tables Relationship between combination of Identifier This page is intentionally left blank Device Overview Functions and performance FeaturesAdaptability Connection to Sata interface Error correction and retry by ECCLow noise and vibration High resistance against shock MHV2100BH MHV2080BH MHV2060BH MHV2040BH Device SpecificationsSpecifications summary Specifications 1 Examples of model names and product numbers Specifications 2Model and product number MHV2100BH Input Voltage Power RequirementsRipple Current and power dissipation Current Requirements and Power Dissipation Environmental specifications Environmental SpecificationsCurrent fluctuation Typ. at +5 V when power is turned on Power on/off sequence Shock and Vibration Acoustic noise specificationShock and vibration specification Acoustic Noise Mean time between failures Mtbf Service lifeData assurance in the event of power failure Reliability Media Defects Error RateUnrecoverable read error Positioning error Recommended power-off sequence Advanced Power Management Advanced Power Management Host-initiated interface power management Hipm Interface Power Management IPMDevice-initiated interface power management Dipm Elimination of Hazardous Substances Interface power management This page is intentionally left blank Device Configuration Device Configuration Read/write circuit System ConfigurationSata interface Drive connection This page is intentionally left blank Installation Conditions Dimensions Dimensions Integration Guidance C141-E144 MountingOrientation Limitation of mounting FramePCA Location of breather Ambient temperature Handling cautions Service area Sumitomo 3M ESDHios Connections with Host System Device connector Signal segment and power supply segment Connector specifications for host systemRecommended connector specifications for the host system Sata interface cable connection This page is intentionally left blank Theory of Device Operation Spindle OutlineSubassemblies Disk Spindle motor driver circuit Circuit ConfigurationAir filter Servo circuit Power supply configuration PCA Power-on operation sequence Power-on Sequence Self-calibration Self-calibration contents Execution timing of self-calibration Command processing during self-calibration Write precompensation Read/write CircuitRead/write preamplifier PreAMP Write circuit AGC circuit Read circuitProgrammable filter circuit Viterbi detection circuit Digital PLL circuitFIR circuit D converter circuit Servo control circuit Servo Control A converter DAC Power amplifierMicroprocessor unit MPU Servo burst capture circuit VCM current sense resistor CSR Driver circuit Outer guard band Data-surface servo formatInner guard band Data area Physical sector servo configuration on disk surface Servo frame format Track following operation Actuator motor controlOperation to move the head to the reference cylinder Seek operation Spindle motor control Start modeAcceleration mode Stable rotation mode This page is intentionally left blank Interface Physical Interface Interface signals Comwake Comreset / Cominit5VDC/GND Out of band signaling Signal interface regulation Pmack AlignCont EOF SOF RIPROK Rrdy Physical Layer Electrical Requirements 1/3 Electrical specificationsFER Physical Layer Electrical Requirements 2/3 Physical Layer Electrical Requirements 3/3 Connector pinouts Connector pinouts Requirements for P11 as an output pin 5 P11 functionStaggered Spin-up Driving Ready LED Example of the circuit for driving Ready LED Hot Plug Logical Interface Conceptual diagram of communication layers Transport layer Communication layersPhysical layer Link layer Shadow Block Register Outline of the Shadow Block Register Register Host to Device FIS layout Outline of the frame information structure FISFIS types Register Host to Device DMA Active Device to Host Register Device to Host TAG DMA Setup Device to Host or Host to Device Bidirectional Bist combinations Bist Active Bidirectional Data FIS Bidirectional layout Data Host to Device or Device to Host Bidirectional Sfrr Error FieldShadow block registers UNC Cylinder Low Field exp Features Field expSector Count Field exp Sector Number Field exp HS3 Cylinder High Field expDevice/Head Field HS3 HS2 HS1 HS0 Bit 7 Busy BSY bit Bit Device Write Fault DF bitBit Error ERR bit Status field EStatus Field Command FieldBit 2 Software Reset Srst Device Control Field Command code and parameters Host CommandsCommand 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 conditions Read Sectors X’20’ or X’21’ LBA LBA LSB Write 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’ Comreset Smart X’B0’ 10 Features Field values subcommands and functions 1/3 Smart Read LOG 10 Features Field values subcommands and functions 2/3Smart Enable Operations Smart Disable Operations ’DB’ Smart ENABLE/DISABLE Auto OFF-LINE 10 Features Field values subcommands and functions 3/3Smart Return Status Key C2h Key 4Fh 11 Format of device attribute value data 12 Format of guarantee failure threshold value data1FF Attribute ID Data format version number Raw attribute value Status FlagCurrent attribute value Attribute value for the worst case so far Self-test execution status 13 Off-line data collection status14 Self-test execution status 15 Off-line data collection capability 17 Drive error logging capability16 Failure prediction capability flag 18 Log Directory Data Format Guarantee failure thresholdSmart error logging Checksum 19 Data format of Smart Summary Error Log 1/2 Total number of drive errors 19 Data format of Smart Summary Error Log 2/2Command data structure Error data structure Smart Self-Test 20 Data format of Smart Comprehensive Error Log Self-test index 21 Smart self-test log data format1FC Self-test number Test Span 22 Selective self-test log data structureCurrent LBA under test Selective Self-test pending time min Feature Flags23 Selective self-test feature flags Current Span under test Device Configuration Identify Device Configuration XB1Device Configuration Restore Device Configuration Freeze Device Configuration Freeze Lock Features Field = C1h Device Configuration Restore Features Field = C0h Device Configuration SET Features Field = C3h Device Configuration Identify Features Field = C2h Word Value Content 24 Device Configuration Identify data structure 1/2 24 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 1/3 25 Information to be read by Identify Device command 2/3 MHV2100BH MHV2080BH 25 Information to be read by Identify Device command 3/3 Host 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 Functions 27 Contents of Security SET Password data Error reporting conditions When the user password is selected When the master 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 10h 33 Counter Identifier information 32 Data format of Read Log Ext log page 11h Write 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 Sfrw Sfrr Error posting34 Command code and parameters 1/2 Command Name TK0NF 34 Command code and parameters 2/2DWF Data Command ProtocolNon-data command protocol Execute Device Diagnostic Initialize Device Parameters Host PIO data-in command protocol 12 PIO data-in command protocol PIO data-out command protocol 13 PIO data-out command protocol Read DMA EXT Identfy Device Identfy Device DMA DMA data-in command protocol Write DMA EXT FUA EXT DMA data-out command protocol Read FP DMA Queued Write FP DMA Queued Native Command Queuing protocol 16 Read FP DMA Queued command protocol 17 Write FP DMA Queued command protocol 18 Power-on sequence Power-on and Comreset 19 Comreset sequence This page is intentionally left blank Operations Response to power-on Reset and Diagnosis Reset and Diagnosis Response to Comreset Response to Comreset Comreset preservation requirements Software settings preservation SET Address MAX EXT Response to a software reset Response to a software reset Active idle mode Power SavePower save mode Active mode Sleep mode Standby mode Power commands Power save mode of the interface Power Save Controlled by Interface Power Management IPMPartial mode Slumber mode Data buffer structure Read-ahead CacheMB buffer Caching operation Commands that are targets of cachingData that is a target of caching Invalidating caching-target data Miss-hit Using the read segment buffer Full hit Sequential hit HAP end location of the previous read command Partial hit Invalidation of cached data Command that are targets of cachingWrite Cache Cache operation Enabling and disabling Status report in the event of an errorComreset and software reset response Cashing function when power supply is turned on This page is intentionally left blank Glossary PIO Programmed input-output Power save modeHost receptacle Master Device Slave Device Rotational delaySeek time Serial-ATA This page is intentionally left blank Acronyms and Abbreviations This page is intentionally left blank Caching Index Index Example of model name and product Mean time between failure Mtbf 4-3 Read Native MAX Address Status, off-line data collection Japan Comment Form This page is intentionally left blank C141-E224-01EN This page is intentionally left blank