Seagate ST3120213SCE, ST3160212SCE, ST3250824SCE, ST3200827SCE manual About the Serial ATA interface

Page 8

1.1About the Serial ATA 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 necessary to set any jump- ers or other configuration options.

•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 www.serialata.org.

2

DB35.2 Serial ATA Product Manual, Rev. C

Page 7 Page 9
Image 8
Page 7 Page 9
Contents DB35.2 Serial ATA Page Contents DB35.2 Serial ATA Product Manual, Rev. C List of Figures Page Introduction About the Serial ATA interface Drive specifications Specification summariesDrive specifications for 500 and 400 Gbyte models Drive specification ST3500841SCE ST3400833SCEBe asked to provide the drive serial number, model number or Drive specifications for 300, 250 and 200 Gbyte models Drive specification ST3300822SCE ST3250824SCE ST3200827SCEDrive specifications for 300, 250 and 200 Gbyte models Drive specifications for 160, 120, and 80 Gbyte models Drive specification ST3160212SCE ST3120213SCE ST3802110SCEDrive specifications for 160, 120, and 80 Gbyte models Default logical geometry LBA modeFormatted capacity Recording and interface technologyDB35.2 Serial ATA Product Manual, Rev. C Physical characteristics Drive specificationSeek time Typical seek times msec Read WritePower specifications Start/stop timesDC power requirements Typical current profilesPower-management modes Active modeIdle mode Sleep modeEnvironmental specifications Acoustics Nonoperating shockVibration Operating vibrationElectromagnetic immunity ReliabilityRadio frequency environments Performance Reference Test Description Level StandardSafety certification Agency certificationElectromagnetic compatibility Korean RRLEnvironmental protection Australian C-Tick N176FCC verification European Union Restriction of Hazardous Substances RoHSCorrosive environment DB35.2 Serial ATA Product Manual, Rev. C Configuring and mounting the drive Handling and static-discharge precautionsBreather filter hole precautions Breather filter hole locationConfiguring the drive Serial ATA cables and connectorsMounting dimensions-top, side and end view Drive mountingSerial ATA Sata interface Hot-Plug compatibilitySerial ATA device plug connector pin definitions Serial ATA connector pin definitionsSignal Pin Function DefinitionCommand name Command code in hex Supported ATA commandsSupported ATA commands F4H Identify Device command Word Description ValueXx07H 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 DB35.2 Serial ATA Product Manual, Rev. C Technical Support InternetPresales Support Data Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Index Pcba Sata Page Page Seagate Technology LLC
Top Page Image Contents