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Fujitsu MHY2160BH manual Microprocessor unit MPU, Servo burst capture circuit, A converter DAC

Models: MHY2120BH MHY2200BH MHY2100BH MHY2160BH MHY2040BH MHY2060BH MHY2080BH MHY2250BH

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Theory of Device Operation

(1) Microprocessor unit (MPU)

The MPU executes startup of the spindle motor, movement to the reference cylinder, seek to the specified cylinder, and calibration operations.

The main internal operations of the MPU are shown below.

a.Spindle motor start

Starts the spindle motor and accelerates it to normal speed when power is applied.

b.Move head to reference cylinder

Drives the VCM to position the head at the any cylinder in the data area. The logical initial cylinder is at the outermost circumference (cylinder 0).

c.Seek to specified cylinder

Drives the VCM to position the head to the specified cylinder.

d.Calibration

Senses and stores the thermal offset between heads and the mechanical forces on the actuator, and stores the calibration value.

(2) Servo burst capture circuit

The servo burst capture circuit reproduces signals (position signals) that indicate the head position from the servo data on the data surface. From the servo area on the data area surface, via the data head, the burst signals of EVEN1, ODD, EVEN2 are output as shown in Figure 4.8 in subsequent to the servo mark, gray code that indicates the cylinder position, and index information. The servo signals do A/D-convert by Fourier-demodulator in the servo burst capture circuit. At that time the AGC circuit is in hold mode. The A/D converted data is recognized by the MPU as position information.

(3) D/A converter (DAC)

The control program calculates the specified data value (digital value) of the VCM drive current, and the value is converted from digital-to-analog so that an analog output voltage is sent to the power amplifier.

(4) Power amplifier

The power amplifier feeds currents, corresponding to the DAC output signal voltage to the VCM.

(5) Spindle motor control circuit

The spindle motor control circuit controls the sensor-less spindle motor. A spindle driver IC with a built-in PLL circuit that is on a hardware unit controls the sensor-less spindle motor.

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C141-E262

Image 72

Fujitsu MHY2160BH, MHY2200BH manual Microprocessor unit MPU, Servo burst capture circuit, A converter DAC, Power amplifier

Contents

Disk Drives PRODUCT/MAINTENANCE Manual For Safe Operation Handling of This Manual Revision History This page is intentionally left blank Conventions for Alert Messages Operating EnvironmentAcronyms and Abbreviations Preface Overview of Manual Conventions Liability Exception Hot Plug Important Alert Items Important Alert MessagesStatic, Damage Device damage Data corruptionDamage or Device damage Disk Drives PRODUCT/MAINTENANCE Manual Manual Organization This page is intentionally left blank Contents Installation Conditions Theory of Device Operation Contents Interface 100 Operations Maintenance and Diagnosis Glossary GL-1 Acronyms and Abbreviations AB-1 Index IN-1 Illustrations Figures Response to power-on when the device is powered on Surface temperature measurement points and standard values Tables 105 This page is intentionally left blank Device Overview Features Functions and performanceAdaptability Wide temperature range Error correction and retry by ECCLow noise and vibration High resistance against shock Device Specifications Specifications summarySpecifications 1/2 Self-diagnosis Specifications 2/2 Model and product number Examples of model names and product numbers Power Requirements Input VoltageRipple Slope of an input voltage at rise Permissible level − 0.2 Current Requirements and Power Dissipation Current and power dissipation Environmental Specifications Current fluctuation Typ. at +5 V when power is turned onEnvironmental 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 APM Recommended power-off sequence Advanced Power Management Interface Power Management IPM Host-initiated interface power management HipmDevice-initiated interface power management Dipm Interface power management This page is intentionally left blank Device Configuration Device Configuration DiskHead Spindle motor System Configuration Sata interfaceDrive connection This page is intentionally left blank Installation Conditions Dimensions Dimensions Mounting Integration Guidance C141-E144Orientation Frame Limitation of mounting PCA Location of breather Ambient temperature Service area Handling cautions ESD Sumitomo 3MHios Device connector Connections with Host System Signal segment and power supply segment Connector specifications for host system Sata interface cable connection This page is intentionally left blank Theory of Device Operation Outline SubassembliesDisk Spindle Circuit Configuration Air filterServo circuit Spindle motor driver circuit Power supply configuration PCA Power-on Sequence Power-onStart 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 Read circuit AGC 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 Data-surface servo format 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 Comreset / Cominit Comwake5VDC/GND Signal interface regulation Out of band signaling Primitives descriptions Electrical specifications Connector pinouts Connector pinouts 5 P11 function Staggered Spin-upDriving Activity LED Requirements for P11 as an output pin Example of the circuit for driving Activity LED Hot Plug Conceptual diagram of communication layers Logical Interface Communication layers Physical layerLink layer Transport layer Outline of the Shadow Block Register Shadow Block Register Outline of the frame information structure FIS FIS types Register Host to Device Register Host to Device FIS layout Register Device to Host DMA Active Device to Host DMA Setup Device to Host or Host to Device Bidirectional TAG Bist Active Bidirectional Bist combinations PIO Setup Device to Host Data Host to Device or Device to Host Bidirectional Interface Set Device Bits Device to Host 11 Set Device Bits FIS Error Field Shadow block registersUNC Sfrr Features Field exp Sector Count Field expSector Number Field exp Cylinder Low Field exp Cylinder High Field exp Device/Head FieldHS3 HS2 HS1 HS0 Status field BSYDSC DRQ ERR Command Field Bit 2 Software Reset SrstDevice Control Field EStatus Field Host Commands Command code and parametersCommand code and parameters 1/3 Command code and parameters 2/3 Command code and parameters 3/3 Command descriptions Error reporting conditions Recalibrate X 10 to X 1F Read Sectors X 20 or X LBA LSB LBA Write Sectors X 30 or X 00 *1 Error information Write Verify X 3C Host Commands Read Verify Sectors X 40 or X Host Commands Seek X 70 to X 7F Execute Device Diagnostic X Diagnostic code Initialize Device Parameters X Download Microcode X Operation of Download Microcode Microcode Standby Immediate X 94 or X E0 Host Commands Unload Feature Unload Immediate Command Standby X 96 or X E2 Idle X 97 or X E3 Host Commands Check Power Mode X 98 or X E5 Comreset Sleep X 99 or X E6 Smart X B0 Features Field values subcommands and functions 1/3 Features Field values subcommands and functions 2/3 Smart Enable OperationsSmart Read LOG Smart Write LOG Features Field values subcommands and functions 3/3 Smart Disable OperationsSmart ENABLE/DISABLE Auto OFF-LINE Smart Return Status Key C2h Key 4Fh 11 Format of guarantee failure threshold value data 10 Format of device attribute value data1FF Data format version number Attribute ID Status Flag Current attribute valueAttribute value for the worst case so far Raw attribute value 12 Off-line data collection status Self-test execution status13 Self-test execution status Off-line data collection capability 14 Off-line data collection capabilityFailure prediction capability flag 15 Failure prediction capability flag Error logging capability 16 Drive error logging capabilityGuarantee failure threshold Checksum Smart error logging 18 Data format of Smart Summary Error Log 1/2 18 Data format of Smart Summary Error Log 2/2 Command data structureError data structure Total number of drive errors 19 Data format of Smart Comprehensive Error Log StatusSmart Self-Test 20 Smart self-test log data format 1FCSelf-test number Self-test index 21 Selective self-test log data structure Test SpanCurrent LBA under test Feature Flags 22 Selective self-test feature flagsSmart Command Transport SCT Current Span under test 23 SCT command and the function SCT Command SETSCT Status Request SCT Read Data SCT Status Request SN = E0h, FR = D5h 24 Format of SCT Status Response 1/2 SET MAX EXT, DCO 24 Format of SCT Status Response 2/2 25 SCT Status code SCT Command SET SN = E0h, FR = D6 26 Action code 27 Write Same 1/2 28 Error Recovery Control 27 Write Same 2/2 29 Feature Control Command 30 SCT Data Table 31 had Temperature SCT Read Data SN = E1h, FR = D5h SCT Write Data SN = E1h, FR = D6h Device Configuration X B1 Device Configuration RestoreDevice Configuration Freeze Device Configuration Identify Device Configuration Restore Features Field = C0h Device Configuration Freeze Lock Features Field = C1h Device Configuration Identify Features Field = C2h Device Configuration SET Features Field = C3h 32 Device Configuration Identify data structure 1/2 32 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 33 Information to be read by Identify Device command 1/3 33 Information to be read by Identify Device command 2/3 33 Information to be read by Identify Device command 3/3 MHY2250BH MHY2200BH MHY2160BH MHY2120BH FffffffMHY2100BH MHY2080BH MHY2060BH MHY2040BH Command without interrupt supports 1, 2, 4, 8 and 16 sectors Word 63 Multiword DMA transfer mode C141-E262 111 Interface C141-E262 113 Bits 13-0 Same definition as Word Undefined = Read and Write DMA EXT GPL optional commands are Host Commands Download SET Features X EF 34 Features field values and settable modes 1/2 34 Features field values and settable modes 2/2 Error reporting conditions Data Transfer Mode Advanced Power Management APM Serial ATA Functions Write-Read-Verify feature optional Automatic Acoustic Management AAM 35 Contents of Security SET Password data Error reporting conditions When the master password is selected When the user password is selectedSecurity Unlock X F2 Host Commands Security Erase Prepare X F3 Security Erase Unit X F4 Security Freeze Lock X F5 Error reporting conditions 37 Contents of security password Error reporting conditions Read Native MAX Address X F8 Lbalsb SET MAX X F9 SET MAX Address 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 Description Read DMA EXT X Description Read Native MAX Address EXT X Read Multiple EXT X Read LOG EXT X 2F Sector offset 38 Data format of Read Log Ext log page 10h 39 Tag field information 40 Data format of Read Log Ext log page 11h 41 Counter Identifier information SCT Status Request SN = E0h SC EXPFR EXP SCT Read Data SN = E1h, FR = D5 Write Sector S EXT X Description Write DMA EXT X Description SET MAX Address EXT X SET MAX LBA Write Multiple EXT X Write DMA FUA EXT X 3D Write LOG EXT X 3F Error information 160 C141-E262 SCT Command SET SN = E0h SCT Write Data SN = E1h Read Verify Sector S EXT X Write Uncorrectable EXT X 42 Operation mode Read LOG DMA EXT X Description Write LOG DMA EX X Description Read FP DMA Queued X Description Write FP DMA Queued X Write Multiple FUA EXT X CE Flush Cache EXT X EA Error posting 43 Command code and parameters 1/2Command Name Sfrw Sfrr 43 Command code and parameters 2/2 DWF Command Protocol Execute Device Diagnostic Initialize Device ParametersData Non-data command protocol Host PIO data-in command protocol 14 PIO data-in command protocol PIO data-out command protocol 15 PIO data-out command protocol DMA data-in command protocol Read DMA EXT Identfy Device DMA Read LOG DMA EXT DMA data-out command protocol Write DMA EXT FUA EXT Write LOG DMA EXT Native Command Queuing protocol Read FP DMA Queued Write FP DMA Queued 18 Read FP DMA Queued command protocol 19 Write FP DMA Queued command protocol Power-on and Comreset 20 Power-on sequence 21 Comreset sequence This page is intentionally left blank Operations Reset and Diagnosis Response to power-on Reset and Diagnosis Response to Comreset Response to Comreset Software settings preservation Comreset preservation requirements SET Address MAX EXT Response to a software reset Response to a software reset Power Save Power save modeActive mode Active idle mode Standby mode Sleep mode Power commands Power Save Controlled by Interface Power Management IPM Power save mode of the interfacePartial mode Slumber mode Read-ahead Cache Data buffer structureExample of 8 MB buffer Read Sector S EXT Commands that are targets of caching Caching operationData that is a target of caching Invalidating caching-target data 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 Comreset and software reset responseCashing function when power supply is turned on Enabling and disabling This page is intentionally left blank Maintenance and Diagnosis Maintenance Rules for maintenance Maintenance requirements Data corruption Maintenance levels Disk drive revision number Disk drive revision number label Display of disk drive revision number Self-diagnostics Tools and test equipmentTest Test flowchart Status Field contents Disposition for Error Field contents Diagnostic test Operation ConfirmationOperation test Troubleshooting Procedure Troubleshooting procedureTroubleshooting disk drive replaced in field System level and field troubleshooting VDC Troubleshooting at factory Disk Drive Removal Procedure Spare Disk Drive This page is intentionally left blank Glossary Power save mode Rotational delayMaster Device PIO Programmed input-output Serial-ATA Slave DeviceStatus This page is intentionally left blank Acronyms and Abbreviations This page is intentionally left blank Index Caching Index Example of model name and product Mode Read/write circuit block diagram Read Native MAX Address Shadow block register, outline Comment Form Japan This page is intentionally left blank C141-E262-01EN Page