Samsung M8 manual Read Native Max Address F8h, 27h extended, Read Sectors 20h, 24h extended

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The contents of the Command Block registers, following the transfer of a data block, which had a sector in error, are undefined. The host should retry the transfer as individual requests to obtain valid error information.

Subsequent blocks are transferred only if the error was a correctable data error. All other errors cause the command to stop after transfer of the block, which contained the error. Interrupts are generated when DRQ is set at the beginning of each block.

8.2.18 Read Native Max Address (F8h, 27h: extended)

This command returns the native maximum address. The native maximum address is the highest address accepted by the device in the factory default condition. The native maximum address is the maximum address that is valid when using the SET MAX ADDRESS command.

8.2.19 Read Sector(s) (20h, 24h: extended)

This command reads from 1 to 256 sectors as specified in the Sector Count register. A sector counts of 0 requests all 256 sectors if the command is Read Sectors (not Read Sector Extended). The transfer begins at the sector specified in the Sector Number register.

If the drive is not already on the desired track, an implied seek is performed. Once at the desired track, the drive searches for the appropriate ID field.

If the ID is read correctly, the data address mark shall be recognized within a specified number of bytes, or the Address Mark Not Found error is posted. DRQ is always set prior to data transfer, regardless of the presence or absence of an error condition.

At command completion, the Command Block registers contain the address of the last sector read. If an error occurs, the read terminates at the sector where the error occurred. The Command Block registers contain the address of the sector where the error occurred.

8.2.20Read Verify Sector(s) (40h, 41h: extended)

This command is obsolete in the ATA7 specification. The supporting of this command is for backward compatibility purpose. The use of this command is beyond the ATA standard and not recommended by the manufacturer.

This command is identical to the Read Sectors command, except that DRQ is never set, and no data is transferred to the host.

When the requested sectors have been verified, the drive clears BSY and generates an interrupt. Upon command completion, the Command Block registers contain the address of the last sector verified. If an error occurs, the Verify terminates at the sector where the error occurred.

The Command Block registers contain the address of where the error occurred. The Sector Count register contains the number of sectors not yet verified.

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 Manual Organization ScopeUser Definition Reference SataIntroduction DescriptionKey Features Hardware Requirements Standards and RegulationsSpecification Summary SpecificationsSpecifications Spindle speed RPM RPM ClassLogical Configurations Physical SpecificationsPhysical Specifications Physical dimensionsPerformance Specifications Power consumption Power consumptionPower Requirements RatedEnvironmental Specifications Environmental Specifications15.0 Reliability Specifications Space Requirements InstallationMounting Unpacking InstructionsOrientation Mounting DimensionsMounting-Screw Clearance ClearanceSata Connectivity Cable ConnectorsVentilation 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 InstallationBase Casting Assembly Head / Disk Assembly HDADC Spindle Motor Assembly Disk Drive OperationCoverAssembly Head Stack Assembly Disk Stack AssemblyVoice Coil Motor and Actuator Latch Assemblies Air Filtration SystemDisk Controller Digital Signal Process and Interface ControllerDrive Electronics DDR Buffer Control Block Host Interface Control BlockFrequency Synthesizer Disk Control BlockDisk Ldpc Control Block Read/Write IC Power ManagementTime Base Generator Automatic Gain ControlAnalog to Digital Converter ADC and FIR Analog Anti-Aliasing Low Pass FilterRead Channel Servo SystemRead and Write Operations Read Caching Firmware FeaturesWrite Channel Write Caching Automatic Defect Allocation Defect ManagementMulti-burst ECC Correction SmartSata Terminology Sata II InterfaceSpinpoint M8 Product Manual REV Signal Descriptions Physical Interface Signal Summary2 I/O Register Address When read When writtenControl Block Register Descriptions RegistersFeatures Register and Feature Extended Register Ex F1h Command Block Register DescriptionsError Register Ex F1h Device Control Register ex F6hDevice Register Ex F6h Command Register Ex F7hStatus Register Ex F7h Device Activity Signal Sata II Feature SETStaggered Spin-up Disable Control Auto-Activate in DMA Setup FISPhy. Event Counters Sata Power Management Software Settings PreservationCommand Code Parameters ATA Command DescriptionsCommand Table Check Power Mode E5h Command DescriptionsDevice Configuration Overlay Feature Register Values Device Configuration Overlay B1hCommand Download Micro Code 92hDevice Configuration Identify data structure Word Content Diagnostic Codes Execute Device Diagnostics 90hFlush Cache E7h, EAh extended Format Track 50hIdentify 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 Immediate E1h Automatic Standby Timer PeriodsIdle E3h NOP 00h Initialize Device Parameters 91hRead Buffer E4h Read DMA C8h, 25h extendedRead Long 22h Read Multiple Command C4h, 29h extendedRead Log Extended 2Fh Read Verify Sectors 40h, 41h extended Read Native Max Address F8h, 27h extendedRead Sectors 20h, 24h extended Recalibrate 10h Security Disable Password F6hSecurity Erase Prepare F3h Security Erase Unit F4hSecurity Erase Unit Password Word Content Security Set Password F1hSecurity Set Password data content Security Freeze Lock F5hIdentifier Level Command result Set Features EFhSecurity Unlock F2h Seek 7xh12 Transfer Mode Values 11 Set Features Register Definitions13 Set Max Feature Register Values Set Multiple Mode C6hSet Max Address F9h, 37h extended Sleep E6hSmart disable operations D9h 14 Smart Feature Registers ValuesSmart enable/disable attribute auto-save D2h Smart B0hSmart 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 Description18 Off-line Data Collection Status Values 17 Smart Attribute Data List19 Self-test Execution Status Values Self-test execution status byteSmart write log sector D6h Smart read log sector D5hSmart return status DAh Write Buffer E8h Standby Immediate E0hWrite DMA CAh, 35h extended Write Fpdma Queued 61hWrite Sectors 30h, 34h extended Write Multiple Command C5h, 39h extendedWrite Long 32h Spinpoint M8 Product Manual REV General Information MaintenanceMaintenance Precautions HDD handling guide -Please handle HDD by side surfaces HDD handling guide Prevent Shocks Service and Repair
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