Seagate ST2000NC001, ST1000NC001, ST1000NC000, ST2000NC000, ST3000NC002 About the Sata interface

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1.1About the SATA interface

The Serial ATA (SATA) interface provides several advantages over the traditional (parallel) ATA interface. The primary advantages include:

•Easy installation and configuration with true plug-and-play connectivity. It is not necessary to set any jumpers or other configuration options.

•Thinner and more flexible cabling for improved enclosure airflow and ease of installation.

•Scalability to higher performance levels.

In addition, SATA makes the transition from parallel ATA easy by providing legacy software support. SATA was designed to allow you to install a SATA host adapter and SATA disk drive in your current system and expect all of your existing applications to work as normal.

The SATA interface connects each disk drive in a point-to-point configuration with the SATA host adapter. There is no master/ slave relationship with SATA devices like there is with parallel ATA. If two drives are attached on one SATA host adapter, the host operating system views the two devices as if they were both “masters” on two separate ports. This essentially means both drives behave as if they are Device 0 (master) devices.

The host adapter may, optionally, emulate a master/slave environment to host software where two devices on

separate SATA ports are represented to host software as a Device 0 (master) and Device 1 (slave) accessed at Note the same set of host bus addresses. A host adapter that emulates a master/slave environment manages two

sets of shadow registers. This is not a typical SATA environment.

The SATA host adapter and drive share the function of emulating parallel ATA device behavior to provide backward compatibility with existing host systems and software. The Command and Control Block registers, PIO and DMA data transfers, resets, and interrupts are all emulated.

The SATA host adapter contains a set of registers that shadow the contents of the traditional device registers, referred to as the Shadow Register Block. All SATA devices behave like Device 0 devices. For additional information about how SATA emulates parallel ATA, refer to the “Serial ATA International Organization: Serial ATA Revision 3.0”. The specification can be downloaded from www.sata-io.org.

Constellation CS Serial ATA Product Manual, Rev. C

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Contents ConstellationCS Serial ATA Document Revision History Revision Date Description of ChangeContents Sata Interface Figures Seagate Technology Support Services Introduction About the Sata interface Drive Specifications Specification summary tablesModel Formatted capacity Guaranteed sectors Bytes per sector Formatted capacityLBA mode Default logical geometryPhysical characteristics LBA modePower specifications Power consumptionSeek time Start/stop times3TB Drive DC power requirements Peak operating current sequential writeTypical current profiles 3TB model current profile 2TB model current profile 1TB model current profile Conducted noise Voltage tolerancePower-management modes Power modes Heads Spindle BufferPowerChoice is invoked using one of two methods Extended Power Conditions PowerChoiceTMPower Condition Name Power Condition ID Description Power Condition Name Manufacturer Default Timer Values EPC Subcommands DescriptionsPowerChoice Supported Extended Power Condition Indentifiers Power Condition Power Condition Name IdentifiersAmbient temperature Environmental limitsHumidity OperatingAltitude ShockVibration Non-operatingElectromagnetic immunity AcousticsTest for Prominent Discrete Tones PDTs Agency certification Safety certification Electromagnetic compatibilityAustralian C-Tick N176 FCC verificationKorean RRL Product warranty Environmental protectionChina Restriction of Hazardous Substances RoHS Directive Corrosive environmentProduct repair and return information ShippingStorage Sata cables and connectors Handling and static-discharge precautionsConfiguring the drive Mounting dimensions Drive mountingPower requirements ATA Security Erase Unit Command on SED Sata drivesSanitize Feature Set on SED Drives Data encryptionSata Interface Hot-Plug compatibilitySata device plug connector pin definitions Sata connector pin definitionsSupported ATA commands Command name Command code in hexF1H Identify Device command Word Description ValueBit Word 69-74Smart error login is supported Set Features command 0CH3 S.M.A.R.T. commands Code in features register A.R.T. commandIndex Constellation CS Serial ATA Product Manual, Rev. CConstellation CS Serial ATA Product Manual, Rev. C Constellation CS Serial ATA Product Manual, Rev. C Seagate Technology LLC Americas
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