Samsung M8 manual Standby Immediate E0h, Write Buffer E8h, Write DMA CAh, 35h extended

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8.2.35 Standby (E2h)

This command causes the drive to enter Standby Mode. See 6.6.3 for the protocol. The drive may return the interrupt before the transition to Standby Mode is completed.

If the drive is already spun down, the spin down sequence is not executed.

8.2.36 Standby Immediate (E0h)

This command causes the drive to enter Standby Mode. See 6.6.3 for the protocol. The drive may return the interrupt before the transition to Standby Mode is completed.

If the drive is already spun down, the spin down sequence is not executed.

8.2.37 Write Buffer (E8h)

This command enables the host to overwrite the contents of the drive's sector buffer with any data pattern desired. See 6.6.2 for the protocol.

The Read Buffer and Write Buffer commands is synchronized within the drive so that sequential Write Buffer and Read Buffer commands access the same 512 bytes within the buffer.

8.2.38 Write DMA (CAh, 35h: extended)

This command executes in a similar manner to Write Sector(s) except the drive issues only one interrupt per command to indicate that data transfer has terminated and status is available.

Any error encountered during Write DMA execution results in the termination of data transfer. The drive issues an interrupt to indicate that data transfer has terminated and the status is available in the Error register. The error posting is the same as that for the Write Sector(s) command.

8.2.39 Write FPDMA Queued (61h)

This command is implemented according to the Serial ATA II: Extension to Serial ATA 1.0a, Revision 1.2 specification. The purpose of this command is for the host to issue a Native Command Queue (NCQ) write commands. This command allows device to reorder the command issued in a sequence of the queue. The command is returned based on the device’s determine of the location sequence.

The Spinpoint M8 drive implemented a queue depth of 32. This will allow host to issue up to 32 NCQ commands (combined read and write commands).

If the drive enters NCQ mode and a non-queue command is received, the drive will respond with error to inform host a queue command been overlapped with non-queue. If a queue tag is not finished and another same tag command is received, the drive will response with error to inform host a duplicated tag is received.

Error information is reported according to the SATA II specification. A read Log Extended command with log page 10 is required to retrieve the error information.

Spinpoint M8 Product Manual REV 2.3

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Contents M8 Product Manual Page Table of Contents Servo System Read and Write Operations Read Fpdma Queued 60h Read Log Extended 2Fh Read Long 22h Table of Tables User Definition ScopeManual Organization Reference SataIntroduction DescriptionKey Features Hardware Requirements Standards and RegulationsSpindle speed RPM RPM Class SpecificationsSpecification Summary SpecificationsPhysical dimensions Physical SpecificationsLogical Configurations Physical SpecificationsPerformance Specifications Rated Power consumptionPower consumption Power RequirementsEnvironmental Specifications Environmental Specifications15.0 Reliability Specifications Space Requirements InstallationMounting Unpacking InstructionsOrientation Mounting DimensionsMounting-Screw Clearance ClearanceVentilation Cable ConnectorsSata Connectivity Serial ATA Management PowerHDD Power, Sata Interface, and Factory Jumper Connector Pin Locations on the Drive Pcba DC Power Connector and SATA-Bus Interface Cable Connections Drive InstallationDisk Drive Operation Head / Disk Assembly HDABase Casting Assembly DC Spindle Motor AssemblyCoverAssembly Air Filtration System Disk Stack AssemblyHead Stack Assembly Voice Coil Motor and Actuator Latch AssembliesDrive Electronics Digital Signal Process and Interface ControllerDisk Controller DDR Buffer Control Block Host Interface Control BlockDisk Ldpc Control Block Disk Control BlockFrequency Synthesizer Automatic Gain Control Power ManagementRead/Write IC Time Base GeneratorAnalog to Digital Converter ADC and FIR Analog Anti-Aliasing Low Pass FilterRead and Write Operations Servo SystemRead Channel Write Channel Firmware FeaturesRead Caching Write Caching Smart Defect ManagementAutomatic Defect Allocation Multi-burst ECC CorrectionSata Terminology Sata II InterfaceSpinpoint M8 Product Manual REV Signal Descriptions Physical Interface Signal SummaryRegisters When read When written2 I/O Register Address Control Block Register DescriptionsDevice Control Register ex F6h Command Block Register DescriptionsFeatures Register and Feature Extended Register Ex F1h Error Register Ex F1hDevice Register Ex F6h Command Register Ex F7hStatus Register Ex F7h Auto-Activate in DMA Setup FIS Sata II Feature SETDevice Activity Signal Staggered Spin-up Disable ControlPhy. Event Counters Sata Power Management Software Settings PreservationCommand Table ATA Command DescriptionsCommand Code Parameters Check Power Mode E5h Command DescriptionsDownload Micro Code 92h Device Configuration Overlay B1hDevice Configuration Overlay Feature Register Values CommandDevice Configuration Identify data structure Word Content Format Track 50h Execute Device Diagnostics 90hDiagnostic Codes Flush Cache E7h, EAh extendedIdentify Device information Content Description=the fields reported in word 88 are valid EXT =Media Card Pass Through command feature set supported WWN Word Content DescriptionIdle E3h Automatic Standby Timer PeriodsIdle Immediate E1h Read DMA C8h, 25h extended Initialize Device Parameters 91hNOP 00h Read Buffer E4hRead Log Extended 2Fh Read Multiple Command C4h, 29h extendedRead Long 22h Read Sectors 20h, 24h extended Read Native Max Address F8h, 27h extendedRead Verify Sectors 40h, 41h extended Security Erase Unit F4h Security Disable Password F6hRecalibrate 10h Security Erase Prepare F3hSecurity Freeze Lock F5h Security Set Password F1hSecurity Erase Unit Password Word Content Security Set Password data contentSeek 7xh Set Features EFhIdentifier Level Command result Security Unlock F2h12 Transfer Mode Values 11 Set Features Register DefinitionsSleep E6h Set Multiple Mode C6h13 Set Max Feature Register Values Set Max Address F9h, 37h extendedSmart B0h 14 Smart Feature Registers ValuesSmart disable operations D9h Smart enable/disable attribute auto-save D2hSmart execute off-line immediate D4h Smart enable operations D8h15 Device Smart Data Structure Smart read data D0hData Structure Revision Number 16 Smart Attribute Status Flags Bit Name Description 18 Off-line Data Collection Status Values 17 Smart Attribute Data List19 Self-test Execution Status Values Self-test execution status byteSmart return status DAh Smart read log sector D5hSmart write log sector D6h Write Fpdma Queued 61h Standby Immediate E0hWrite Buffer E8h Write DMA CAh, 35h extendedWrite Long 32h Write Multiple Command C5h, 39h extendedWrite Sectors 30h, 34h extended Spinpoint M8 Product Manual REV Maintenance Precautions MaintenanceGeneral Information HDD handling guide -Please handle HDD by side surfaces HDD handling guide Prevent Shocks Service and Repair
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