Samsung M8 manual Sata II Interface, Sata Terminology

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CHAPTER 6 SATA II INTERFACE

6.1Introduction

The Spinpoint M8 disk drive is equipped with an industry standard SATA Interface fully supports and enhances PC mass storage requirements. The SATA interface conforms to the Serial ATA standards in Cabling, in Physical Signals, and in Logical Programming schemes. The Spinpoint M8 disk drive joins the industry premiere VLSI circuitry with ingenious programming skill that does not compromise performance or reliability. Samsung integrates and delivers the cutting edge in technology. Samsung Spinpoint M8 SATA class disk drives are designed to relieve and to enhance the I/O request processing function of system drivers.

SATA Terminology

The following contains some commonly proposed terminology used in SATA technology.

BACKCHANNEL-A term used to describe or refer to the transmit same-side of SATA interface, when the scope of the paragraph is addressing the receive interface. For example, when discussing the receive SATA interface on the device side, the term “backchannel” would be used to describe the transmit interface on the device side.

CHARACTER ALIGNMENT-Character alignment is a receiver action that resets the character boundary to that of the comma sequence found in the K28.5 control character of the ALIGN primitive, and establishes Dword synchronization of the incoming serial data stream.

CHARACTER SLIPPING-Character slipping is the receiver action that realigns the receiver’s clock to the received bit stream by adding or removing bit times within the characters of the ALIGN primitive.

CODE VIOLATION- A code violation is an error that occurs in the reception process as a result of (1) a running disparity violation or (2) an encoded character that does not translate to a valid data or control character or (3) an encoded character that translates to a control character other than K28.5 or K28.3 in byte 0 of a Dword or (4) an encoded character that translates to any control character (valid or invalid) in bytes 1-3 of a Dword.

COMMA CHARACTER- A comma character is a control character, that when encoded, contains the comma sequence. In Serial ATA the only comma character used is K28.5, and only the ALIGN primitive contains the comma character. The comma sequence is the first seven bits of the encoded character.

COMMA SEQUENCE- The comma sequence is a seven-bit sequence of 0011111 or 1100000 in an encoded stream. The comma sequence is unique in that it appears only in a single encoded character, and furthermore, cannot appear in any subset of bits in adjacent encoded characters. This unique property allows the comma sequence to be used for determining alignment of the received data stream.

COMRESET / COMINIT- Host: Signal from the out of band detector that indicates the COMINIT out of band signal is being detected.

CONTROL CHARACTER- A control character is a combination of a byte value with the control variable equal to K.

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 Scope User DefinitionManual Organization Sata ReferenceDescription IntroductionKey Features Standards and Regulations Hardware RequirementsSpecifications SpecificationsSpecification Summary Spindle speed RPM RPM ClassPhysical Specifications Physical SpecificationsLogical Configurations Physical dimensionsPerformance Specifications Power Requirements Power consumptionPower consumption RatedEnvironmental Specifications Environmental Specifications15.0 Reliability Specifications Installation Space RequirementsUnpacking Instructions MountingMounting Dimensions OrientationClearance Mounting-Screw ClearanceCable Connectors VentilationSata 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 ConnectionsDC Spindle Motor Assembly Head / Disk Assembly HDABase Casting Assembly Disk Drive OperationCoverAssembly Voice Coil Motor and Actuator Latch Assemblies Disk Stack AssemblyHead Stack Assembly Air Filtration SystemDigital Signal Process and Interface Controller Drive ElectronicsDisk Controller DDR Host Interface Control Block Buffer Control BlockDisk Control Block Disk Ldpc Control BlockFrequency Synthesizer Time Base Generator Power ManagementRead/Write IC Automatic Gain ControlAnalog Anti-Aliasing Low Pass Filter Analog to Digital Converter ADC and FIRServo System Read and Write OperationsRead Channel Firmware Features Write ChannelRead Caching Write Caching Multi-burst ECC Correction Defect ManagementAutomatic Defect Allocation SmartSata II Interface Sata TerminologySpinpoint M8 Product Manual REV Physical Interface Signal Summary Signal DescriptionsControl Block Register Descriptions When read When written2 I/O Register Address RegistersError Register Ex F1h Command Block Register DescriptionsFeatures Register and Feature Extended Register Ex F1h Device Control Register ex F6hCommand Register Ex F7h Device Register Ex F6hStatus Register Ex F7h Staggered Spin-up Disable Control Sata II Feature SETDevice Activity Signal Auto-Activate in DMA Setup FISPhy. Event Counters Software Settings Preservation Sata Power ManagementATA Command Descriptions Command TableCommand Code Parameters Command Descriptions Check Power Mode E5hCommand Device Configuration Overlay B1hDevice Configuration Overlay Feature Register Values Download Micro Code 92hDevice Configuration Identify data structure Word Content Flush Cache E7h, EAh extended Execute Device Diagnostics 90hDiagnostic Codes 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 WWNAutomatic Standby Timer Periods Idle E3hIdle Immediate E1h Read Buffer E4h Initialize Device Parameters 91hNOP 00h Read DMA C8h, 25h extendedRead Multiple Command C4h, 29h extended Read Log Extended 2FhRead Long 22h Read Native Max Address F8h, 27h extended Read Sectors 20h, 24h extendedRead Verify Sectors 40h, 41h extended Security Erase Prepare F3h Security Disable Password F6hRecalibrate 10h Security Erase Unit F4hSecurity Set Password data content Security Set Password F1hSecurity Erase Unit Password Word Content Security Freeze Lock F5hSecurity Unlock F2h Set Features EFhIdentifier Level Command result Seek 7xh11 Set Features Register Definitions 12 Transfer Mode ValuesSet Max Address F9h, 37h extended Set Multiple Mode C6h13 Set Max Feature Register Values Sleep E6hSmart enable/disable attribute auto-save D2h 14 Smart Feature Registers ValuesSmart disable operations D9h 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 read log sector D5h Smart return status DAhSmart write log sector D6h Write DMA CAh, 35h extended Standby Immediate E0hWrite Buffer E8h Write Fpdma Queued 61hWrite Multiple Command C5h, 39h extended Write Long 32hWrite Sectors 30h, 34h extended Spinpoint M8 Product Manual REV Maintenance Maintenance PrecautionsGeneral Information HDD handling guide -Please handle HDD by side surfaces Service and Repair HDD handling guide Prevent Shocks
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