Seagate ST980813ASG, ST9200420ASG, ST9160823ASG, ST9120823AS About the Serial ATA Sata interface

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1.1About the Serial ATA (SATA) interface

The Serial ATA 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 normally necessary to set any jumpers or other configuration options. A jumper position is available to configure the drive for 1.5Gb/s operation for systems that can not operate at a 3Gb/s transfer rate.

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

•Scalability to higher performance levels.

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

The Serial ATA interface connects each disc drive in a point-to-point configuration with the Serial ATA host adapter. There is no master/slave relationship with Serial ATA devices like there is with parallel ATA. If two drives are attached on one Serial ATA 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.

Note. The host adapter may, optionally, emulate a master/slave environment to host software where two devices on separate Serial ATA ports are represented to host software as a Device 0 (master) and Device 1 (slave) accessed at 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 Serial ATA environment.

The Serial ATA 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 Serial ATA host adapter contains a set of registers that shadow the contents of the traditional device regis- ters, referred to as the Shadow Register Block. All Serial ATA devices behave like Device 0 devices. For addi- tional information about how Serial ATA emulates parallel ATA, refer to the “Serial ATA: High Speed Serialized AT Attachment” specification. The specification can be downloaded from http://www.serialata.com.

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Momentus 7200.2 SATA Product Manual, Rev. E

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Contents Momentus 7200.2 Sata Page Contents Momentus 7200.2 Sata Product Manual, Rev. E List of Figures Page Introduction About the Serial ATA Sata interface Drive specifications Specification summary tableWill display the warranty information for your drive Default logical geometry LBA modeFormatted capacity Cylinders Read/write heads Sectors per track 16,383Recording and interface technology Physical characteristicsPhysical organization Seek time Start/stop timesTypical seek times Typical seek times msec Read WritePower specifications Voltage tolerance Typical current profileConducted noise Power-management modes Power management modesActive mode Idle modeEnvironmental specifications Shock Operating shockNonoperating shock VibrationAcoustics Electromagnetic immunityDrive level acoustics Radio frequency environmentsFree Fall Protection feature Safety certificationReliability Agency certificationFCC verification Korean RRLAustralian C-Tick N176 Environmental protection Corrosive environment超出Page Momentus 7200.2 Sata Product Manual, Rev. E Configuring and mounting the drive Handling and static-discharge precautionsConfiguring the drive Serial ATA cables and connectorsDrive dimensions Drive mountingMomentus 7200.2 Sata Product Manual, Rev. E Segment Pin Function Definition Serial ATA connector pin definitionsSerial ATA Sata interface Pin Function Definition P10 Ground 2nd mate P11 ReservedSupported ATA commands Command name Command code in hex ATA-standard commandsATA-standard security commands Command name Command code in hexATA-standard power-management commands Identify Device command Word Description ValueXxxxH Description if bit is set to Bit Word Bit WordSet Features command Set Features command valuesCode in features register A.R.T. command 3 S.M.A.R.T. commandsA.R.T. commands Momentus 7200.2 Sata Product Manual, Rev. E Seagate Technology support services InternetPresales Support Technical SupportData Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Index ITE Sata Momentus 7200.2 Sata Product Manual, Rev. E Page Seagate Technology LLC
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