Samsung M8 manual Servo System Read and Write Operations

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	5.2.3.5	Analog to Digital Converter (ADC) and FIR	31
5.3	SERVO SYSTEM		32
5.4	READ AND WRITE OPERATIONS		32
5.4.1		The Read Channel	32
5.4.2		The Write Channel	33
5.5	FIRMWARE FEATURES		33
5.5.1		Read Caching	33
5.5.2		Write Caching	34
5.5.3		Defect Management	35
5.5.4		Automatic Defect Allocation	35
5.5.5		Multi-burst ECC Correction	35
5.5.6		SMART	35
CHAPTER 6		SATA II INTERFACE	37
6.1	INTRODUCTION		37
SATA Terminology			37
6.2	PHYSICAL INTERFACE		39
6.3	SIGNAL SUMMARY		39
6.3.1		Signal Descriptions	39
6.3.2		I/O Register - Address	40
6.3.3		Control Block Register Descriptions	40
	6.3.3.1	Alternate Status Register (ex. 3F6h)	40
	6.3.3.2	Device Control Register (ex. 3F6h)	41
6.3.4		Command Block Register Descriptions	41
	6.3.4.1	Data Register (Ex. 1F0h)	41
	6.3.4.2	Features Register and Feature Extended Register (Ex. 1F1h)	41
	6.3.4.3	Sector Number Register and Sector Number Extended Register (Ex. 1F3h)	41
	6.3.4.4	Error Register (Ex. 1F1h)	41
	6.3.4.5	Sector Count Register and Sector Count Extended Register (Ex. 1F2h)	42
	6.3.4.6	Cylinder High Register and Cylinder High Extended Register (Ex. 1F5h)	42
	6.3.4.7	Cylinder Low Register and Cylinder Low Extended Register (Ex. 1F4h)	42
	6.3.4.8	Command Register (Ex. 1F7h)	42
	6.3.4.9	Device Register (Ex. 1F6h)	42
	6.3.4.10	Status Register (Ex. 1F7h)	43
CHAPTER 7		SATA II FEATURE SET	44
7.1	DEVICE ACTIVITY SIGNAL		44
7.2	STAGGERED SPIN-UPDISABLE CONTROL		44
7.3	AUTO-ACTIVATE IN DMA SETUP FIS		44
7.4	NATIVE COMMAND QUEUING (NCQ)		44
7.5	PHY. EVENT COUNTERS		45
7.6	SOFTWARE SETTINGS PRESERVATION		46
7.7	SATA POWER MANAGEMENT		46
CHAPTER 8		ATA COMMAND DESCRIPTIONS	47
8.1	COMMAND TABLE		47
8.2	COMMAND DESCRIPTIONS		48
8.2.1		Check Power Mode (E5h)	48
8.2.2		Download Micro Code (92h)	49
8.2.3		Device Configuration Overlay (B1h)	49
8.2.4		Execute Device Diagnostics (90h)	51
8.2.5		Flush Cache (E7h, EAh: extended)	51
8.2.6		Format Track (50h)	51
8.2.7		Identify Device (ECh)	51
8.2.8		Idle (E3h)	57
8.2.9		Idle Immediate (E1h)	57
8.2.10		Initialize Device Parameters (91h)	58
8.2.11		NOP (00h)	58
8.2.12		Read Buffer (E4h)	58
8.2.13		Read DMA (C8h, 25h:extended)	58

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