Samsung M8 manual Read Log Extended 2Fh, Read Long 22h, Read Multiple Command C4h, 29h extended

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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.

8.2.15 Read Log Extended (2Fh)

This command returns the specified log to the host. The device shall interrupt for each DRQ block transferred. See ATA 7 document for command details.

8.2.16 Read Long (22h)

This command is obsolete in the ATA7 specification.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 manufacture.

The Read Long command performs similarly to the Read Sectors command except that it returns the data and the ECC bytes appended to the data field of the desired sector. During a Read Long command, the drive does not check the ECC bytes to determine if there has been a data error. Only single sector Read Long operations are supported.

The transfer of the ECC bytes shall be 8 bits wide and 4 or device native ECC bytes length.

8.2.17 Read Multiple Command (C4h, 29h: extended)

The Read Multiple command performs similarly to the Read Sectors command except interrupts are not generated on every sector, but on the transfer of a block which contains the number of sectors defined by a Set Multiple command.

Command execution is identical to the Read Sectors operation except that the numbers of sectors as defined by a Set of Multiple command are transferred without intervening interrupts. DRQ qualification of the transfer is required only at the start of the data block, not on each sector.

The block count of sectors to be transferred without intervening interrupts is programmed by the Set Multiple Mode command, which should be executed prior to the Read Multiple command. When the Read Multiple command is issued, the Sector Count register contains the number of sectors (not the number of blocks or the block count) requested.

If the number of requested sectors is not evenly divisible by the block count, as many full blocks as possible are transferred, followed by a final, partial block transfer. The partial block transfer shall be for n sectors, where

n = Remainder (Sector Count / Block Count)

If the Read Multiple command is attempted before the Set Multiple Mode command has been executed or when Read Multiple commands are disabled, then the Read Multiple operation is rejected with an Aborted Command error.

Disk errors encountered during Read Multiple commands are posted at the beginning of the block or partial block transfer, but DRQ is still set and the data transfer takes place as it normally would, including transfer of corrupted data, if any.

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 Sata ReferenceDescription IntroductionKey Features Standards and Regulations Hardware RequirementsSpecifications Specification SummarySpecifications Spindle speed RPM RPM ClassPhysical Specifications Logical ConfigurationsPhysical Specifications Physical dimensionsPerformance Specifications Power consumption Power consumptionPower Requirements RatedEnvironmental Specifications Environmental Specifications15.0 Reliability Specifications Installation Space RequirementsUnpacking Instructions MountingMounting Dimensions OrientationClearance Mounting-Screw ClearanceVentilation Cable ConnectorsSata Connectivity Serial ATA Power ManagementHDD Power, Sata Interface, and Factory Jumper Connector Pin Locations on the Drive Pcba Drive Installation DC Power Connector and SATA-Bus Interface Cable ConnectionsHead / Disk Assembly HDA Base Casting AssemblyDC Spindle Motor Assembly Disk Drive OperationCoverAssembly Disk Stack Assembly Head Stack AssemblyVoice Coil Motor and Actuator Latch Assemblies Air Filtration SystemDrive Electronics Digital Signal Process and Interface ControllerDisk Controller DDR Host Interface Control Block Buffer Control BlockDisk Ldpc Control Block Disk Control BlockFrequency Synthesizer Power Management Read/Write ICTime Base Generator Automatic Gain ControlAnalog Anti-Aliasing Low Pass Filter Analog to Digital Converter ADC and FIRRead and Write Operations Servo SystemRead Channel Write Channel Firmware FeaturesRead Caching Write Caching Defect Management Automatic Defect AllocationMulti-burst ECC Correction SmartSata II Interface Sata TerminologySpinpoint M8 Product Manual REV Physical Interface Signal Summary Signal DescriptionsWhen read When written 2 I/O Register AddressControl Block Register Descriptions RegistersCommand Block Register Descriptions Features Register and Feature Extended Register Ex F1hError Register Ex F1h Device Control Register ex F6hCommand Register Ex F7h Device Register Ex F6hStatus Register Ex F7h Sata II Feature SET Device Activity SignalStaggered Spin-up Disable Control Auto-Activate in DMA Setup FISPhy. Event Counters Software Settings Preservation Sata Power ManagementCommand Table ATA Command DescriptionsCommand Code Parameters Command Descriptions Check Power Mode E5hDevice Configuration Overlay B1h Device Configuration Overlay Feature Register ValuesCommand Download Micro Code 92hDevice Configuration Identify data structure Word Content Execute Device Diagnostics 90h Diagnostic CodesFlush Cache E7h, EAh extended Format Track 50hContent Description Identify Device information=the fields reported in word 88 are valid EXT =Media Card Pass Through command feature set supported Word Content Description WWNIdle E3h Automatic Standby Timer PeriodsIdle Immediate E1h Initialize Device Parameters 91h NOP 00hRead Buffer E4h Read DMA C8h, 25h extendedRead 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 Disable Password F6h Recalibrate 10hSecurity Erase Prepare F3h Security Erase Unit F4hSecurity Set Password F1h Security Erase Unit Password Word ContentSecurity Set Password data content Security Freeze Lock F5hSet Features EFh Identifier Level Command resultSecurity Unlock F2h Seek 7xh11 Set Features Register Definitions 12 Transfer Mode ValuesSet Multiple Mode C6h 13 Set Max Feature Register ValuesSet Max Address F9h, 37h extended Sleep E6h14 Smart Feature Registers Values Smart disable operations D9hSmart enable/disable attribute auto-save D2h Smart B0hSmart enable operations D8h Smart execute off-line immediate D4hSmart read data D0h 15 Device Smart Data StructureData Structure Revision Number Bit Name Description 16 Smart Attribute Status Flags17 Smart Attribute Data List 18 Off-line Data Collection Status ValuesSelf-test execution status byte 19 Self-test Execution Status ValuesSmart return status DAh Smart read log sector D5hSmart write log sector D6h Standby Immediate E0h Write Buffer E8hWrite DMA CAh, 35h extended Write Fpdma Queued 61hWrite 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 Service and Repair HDD handling guide Prevent Shocks
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