Manuals / Fujitsu / Computer Equipment / Computer Drive

Fujitsu MHV2100BH, MHV2080BH, MHV2040BH Advanced Power Management, Recommended power-off sequence

Models: MHV2100BH MHV2040BH MHV2060BH MHV2080BH

1 274

Download 274 pages 5.42 Kb

Page 36

Device Overview

Emergency Unload other than Unload is performed when the power is shut down while the heads are still loaded on the disk.

The product supports the Emergency Unload a minimum of 20,000 times. When the power is shut down, the controlled Unload cannot be executed. Therefore, the number of Emergency other than Unload is specified.

1.10.1 Recommended power-off sequence

We recommend cutting the power supply of the HDD for this device after the Head Unload operation completes. The recommended power supply cutting sequence for this device is as follows:

1)Disk Flush

Flush Cache command execution.

2)Head Unload

Standby Immediate command execution.

3)Wait Status

Checking whether bit 7 of the status register was set to '0'. (wait to complete STANDBY IMMEDIATE command)

4)HDD power supply cutting

1.11Advanced Power Management

The disk drive automatically shifts to the power saving mode according to the setting of the APM mode under the idle condition.

The APM mode can be chosen with a Sector Count register of the SET

FEATURES (EF) command.

The disk drive complies with the three kinds of APM modes that a command from the host is required.

FR = 05h : Enable APM

SC = C0h - FEh : Mode-0 Active Idle → Low Power Idle

SC = 80h - BFh : Mode-1 Active Idle → Low Power Idle (Default)

SC = 01h - 7Fh : Mode-2 Active Idle → Low Power Idle → Standby

FR = 85h : Disable APM (Set Mode-0)

Active Idle:	The head is in a position of extreme inner in disk
	medium. (VCM Lock)

1-12

C141-E224

Image 36

Fujitsu MHV2100BH, MHV2080BH, MHV2040BH, MHV2060BH manual Advanced Power Management, Recommended power-off sequence

Contents

MHV2100BH, MHV2080BH MHV2060BH, MHV2040BH Disk Drives Product ManualFor Safe Operation Handling of This ManualRevision History This page is intentionally left blank Preface Overview of ManualConventions for Alert Messages Operating EnvironmentConventions Liability Exception This page is intentionally left blank Important Alert Items Important Alert MessagesThis 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 Contents Interface3.1 101 Power Save Controlled by Interface Power Management IPM OperationsGlossary GL-1 Acronyms and Abbreviations AB-1 Index IN-1 Illustrations FiguresResponse to power-on when the host is powered on Tables Examples of model names and product numbersRelationship between combination of Identifier This page is intentionally left blank Device Overview Features Functions and performanceAdaptability Error correction and retry by ECC Low noise and vibrationHigh resistance against shock Connection to Sata interfaceDevice Specifications Specifications summarySpecifications 1 MHV2100BH MHV2080BH MHV2060BH MHV2040BHSpecifications 2 Model and product numberMHV2100BH Examples of model names and product numbersPower Requirements Input VoltageRipple Current Requirements and Power Dissipation Current and power dissipationEnvironmental Specifications Current fluctuation Typ. at +5 V when power is turned onPower on/off sequence Environmental specificationsAcoustic noise specification Shock and vibration specificationAcoustic Noise Shock and VibrationService life Data assurance in the event of power failureReliability Mean time between failures MtbfError Rate Unrecoverable read errorPositioning error Media DefectsAdvanced Power Management Recommended power-off sequenceAdvanced Power Management Interface Power Management IPM Host-initiated interface power management HipmDevice-initiated interface power management Dipm Interface power management Elimination of Hazardous SubstancesThis page is intentionally left blank Device Configuration Device Configuration System Configuration Sata interfaceDrive 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 Service area Handling cautionsESD Sumitomo 3MHios Device connector Connections with Host SystemConnector 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 Outline SubassembliesDisk SpindleCircuit Configuration Air filterServo circuit Spindle motor driver circuitPower supply configuration PCA Power-on Sequence Power-on operation sequenceSelf-calibration contents Self-calibrationCommand processing during self-calibration Execution timing of self-calibrationRead/write Circuit Read/write preamplifier PreAMPWrite circuit Write precompensationRead circuit AGC circuitProgrammable filter circuit Digital PLL circuit FIR circuitD converter circuit Viterbi detection circuitServo Control Servo control circuitPower amplifier Microprocessor unit MPUServo burst capture circuit A converter DACDriver circuit VCM current sense resistor CSRData-surface servo format Inner guard bandData area Outer guard bandPhysical sector servo configuration on disk surface Servo frame format Actuator motor control Operation to move the head to the reference cylinderSeek operation Track following operationStart mode Acceleration modeStable rotation mode Spindle motor controlThis page is intentionally left blank Interface Interface signals Physical InterfaceComreset / Cominit Comwake5VDC/GND Signal interface regulation Out of band signalingAlign ContEOF PmackRIP ROKRrdy SOFElectrical specifications Physical Layer Electrical Requirements 1/3FER Physical Layer Electrical Requirements 2/3 Physical Layer Electrical Requirements 3/3 Connector pinouts Connector pinouts5 P11 function Staggered Spin-upDriving Ready LED Requirements for P11 as an output pinExample of the circuit for driving Ready LED Hot Plug Conceptual diagram of communication layers Logical InterfaceCommunication layers Physical layerLink layer Transport layerOutline of the Shadow Block Register Shadow Block RegisterOutline of the frame information structure FIS FIS typesRegister Host to Device Register Host to Device FIS layoutRegister Device to Host DMA Active Device to HostDMA Setup Device to Host or Host to Device Bidirectional TAGBist Active Bidirectional Bist combinationsData Host to Device or Device to Host Bidirectional Data FIS Bidirectional layoutError Field Shadow block registersUNC SfrrFeatures Field exp Sector Count Field expSector Number Field exp Cylinder Low Field expCylinder High Field exp Device/Head FieldHS3 HS2 HS1 HS0 HS3Bit Device Write Fault DF bit Bit Error ERR bitStatus field Bit 7 Busy BSY bitCommand Field Bit 2 Software Reset SrstDevice 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 Error reporting conditions Recalibrate X’10’ to X’1F’Read Sectors X’20’ or X’21’ LBA LSB LBAWrite 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’ Execute Device Diagnostic X’90’ Diagnostic codeInitialize Device Parameters X’91’ Download Microcode X’92’ Operation of Download MicrocodeError 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 Check Power Mode X’98’ or X’E5’ ’FF’Comreset Sleep X’99’ or X’E6’Smart X’B0’ 10 Features Field values subcommands and functions 1/3 10 Features Field values subcommands and functions 2/3 Smart Enable OperationsSmart 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 Data format version number Attribute IDStatus Flag Current attribute valueAttribute 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 Guarantee failure threshold Smart error loggingChecksum 18 Log Directory Data Format19 Data format of Smart Summary Error Log 1/2 19 Data format of Smart Summary Error Log 2/2 Command data structureError data structure Total number of drive errors20 Data format of Smart Comprehensive Error Log Smart Self-Test21 Smart self-test log data format 1FCSelf-test number Self-test index22 Selective self-test log data structure Test SpanCurrent LBA under test Feature Flags 23 Selective self-test feature flagsCurrent Span under test Selective Self-test pending time minDevice Configuration XB1 Device Configuration RestoreDevice Configuration Freeze Device Configuration IdentifyDevice Configuration Restore Features Field = C0h Device Configuration Freeze Lock Features Field = C1hDevice Configuration Identify Features Field = C2h Device Configuration SET Features Field = C3h24 Device Configuration Identify data structure 1/2 Word Value Content24 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’ 25 Information to be read by Identify Device command 1/3 ’3FFF’25 Information to be read by Identify Device command 2/3 25 Information to be read by Identify Device command 3/3 MHV2100BH MHV2080BHHost 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 SET Features X’EF’ 26 Features field values and settable modes 1/226 Features field values and settable modes 2/2 Data Transfer Mode Advanced Power Management APM Serial ATA Functions Automatic Acoustic Management AAM27 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 Read Native MAX Address X’F8’ LbalsbSET MAX X’F9’ SET MAX AddressSET 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 30 Data format of Read Log Ext log page 10h 31 Tag field information32 Data format of Read Log Ext log page 11h 33 Counter Identifier informationWrite 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 Error posting 34 Command code and parameters 1/2Command Name Sfrw Sfrr34 Command code and parameters 2/2 TK0NFDWF Command Protocol Non-data command protocolExecute Device Diagnostic Initialize Device Parameters DataHost PIO data-in command protocol PIO data-out command protocol 12 PIO data-in command protocol13 PIO data-out command protocol DMA data-in command protocol Read DMA EXT Identfy Device Identfy Device DMADMA data-out command protocol Write DMA EXT FUA EXTNative Command Queuing protocol Read FP DMA Queued Write FP DMA Queued16 Read FP DMA Queued command protocol 17 Write FP DMA Queued command protocol Power-on and Comreset 18 Power-on sequence19 Comreset sequence This page is intentionally left blank Operations Reset and Diagnosis Response to power-onReset and Diagnosis Response to Comreset Response to ComresetSoftware settings preservation Comreset preservation requirementsSET Address MAX EXT Response to a software reset Response to a software resetPower Save Power save modeActive mode Active idle modeStandby mode Sleep 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 Using the read segment buffer Miss-hitSequential hit Full hitHAP end location of the previous read command Partial hit Command that are targets of caching Write CacheCache operation Invalidation of cached dataStatus report in the event of an error Comreset and software reset responseCashing function when power supply is turned on Enabling and disablingThis page is intentionally left blank Glossary Power save mode Host receptacleMaster Device PIO Programmed input-outputRotational delay Seek timeSerial-ATA Slave DeviceThis page is intentionally left blank Acronyms and Abbreviations This page is intentionally left blank Index CachingIndex Example of model name and product Mean time between failure Mtbf Read Native MAX Address 4-3Status, off-line data collection Comment Form JapanThis page is intentionally left blank C141-E224-01EN This page is intentionally left blank