Seagate ST31500541AS, ST31000520AS, ST32000542AS manual Set Features command values

Page 37

4.3.2Set Features command

This command controls the implementation of various features that the drive supports. When the drive receives this command, it sets BSY, checks the contents of the Features register, clears BSY and generates an inter- rupt. If the value in the register does not represent a feature that the drive supports, the command is aborted. Power-on default has the read look-ahead and write caching features enabled. The acceptable values for the Features register are defined as follows:

Table 7: Set Features command values

02H

Enable write cache (default).

03H

Set transfer mode (based on value in Sector Count register).

 

Sector Count register values:

 

00H

Set PIO mode to default (PIO mode 2).

 

01H

Set PIO mode to default and disable IORDY (PIO mode 2).

 

08H

PIO mode 0

 

09H

PIO mode 1

 

0AH

PIO mode 2

 

0BH

PIO mode 3

 

0CH

PIO mode 4 (default)

 

20H

Multiword DMA mode 0

 

21H

Multiword DMA mode 1

 

22H

Multiword DMA mode 2

 

40H

Ultra DMA mode 0

 

41H

Ultra DMA mode 1

 

42H

Ultra DMA mode 2

 

43H

Ultra DMA mode 3

 

44H

Ultra DMA mode 4

 

45H

Ultra DMA mode 5

 

46H

Ultra DMA mode 6

10H

Enable use of SATA features

55H

Disable read look-ahead (read cache) feature.

82H

Disable write cache

90H

Disable use of SATA features

AAH

Enable read look-ahead (read cache) feature (default).

F1H

Report full capacity available

Note. At power-on, or after a hardware or software reset, the default values of the features are as indi- cated above.

Barracuda LP Series SATA Product Manual, Rev. A

31

Image 37
Contents ST32000542AS ST31500541AS ST31000520AS Barracuda LP Series SataRevision Date Revision historyContents Barracuda LP Series Sata Product Manual, Rev. a List of Figures Page Introduction About the Serial ATA interface Drive specifications Drive specification ST32000542AS ST31500541AS ST31000520AS Drive specifications summary for 2000 and 1500 Gbyte modelsBarracuda LP Series Sata Product Manual, Rev. a LBA mode Default logical geometryFormatted capacity Recording and interface technologyAccess time Physical characteristicsTypical access times msec Read Write Start/stop timesPower specifications DC power requirements Typical current profiles Voltage tolerance Conducted noiseActive mode Power-management modesIdle mode Sleep modeEnvironmental specifications Operating shock ShockNonoperating shock VibrationAcoustics Drive A-weighted Sound Power Levels SWL, BAElectromagnetic immunity Test for Prominent Discrete Tones PDTsReliability Safety certificationAgency certification Electromagnetic compatibilityAustralian C-Tick N176 Korean RRLFCC verification Corrosive environment Environmental protectionHandling and static-discharge precautions Configuring and mounting the driveSerial ATA cables and connectors Configuring the driveDrive mounting Mounting dimensions 2.0, 1.5 and 1.0 TB modelsBarracuda LP Series Sata Product Manual, Rev. a Hot-Plug compatibility Serial ATA Sata interfaceSerial ATA connector pin definitions Serial ATA device plug connector pin definitionsSignal Pin Function DefinitionSupported ATA commands Supported ATA commandsCommand name Command code in hex F3H Word Description Value Identify Device commandXx07H Bit Word Description if bit is set to Bit WordWord Set Features command values Set Features commandA.R.T. commands 3 S.M.A.R.T. commandsCode in features register A.R.T. command Presales Support Seagate Technology support servicesTechnical Support Data Recovery Services Authorized Service Centers Warranty ServiceData Recovery Services Call Center Toll-free Direct dial Index ITE Page Barracuda LP Series Sata Product Manual, Rev. a Page Seagate Technology LLC

ST32000542AS, ST31000520AS, ST31500541AS specifications

Seagate has long been a prominent player in the hard disk drive (HDD) market, and their SATA drives have earned a reputation for reliability and performance. Among their notable models are the ST31500541AS, ST31000520AS, and ST32000542AS, each offering unique features and technologies that cater to various storage needs.

The ST31500541AS is a 1.5TB SATA drive known for its robust data handling capabilities. Operating at 7200 RPM, it offers a data transfer rate of up to 6Gb/s, making it suitable for demanding applications that require quick access to large files. This model features Seagate’s perpendicular recording technology, which increases storage density and efficiency. With an average seek time of 8.5 ms, users can expect swift performance for both read and write operations. Its 32MB cache also aids in enhancing data transfer rates and minimizing lag during data retrieval.

Next is the ST31000520AS, a 1TB drive that combines performance with energy efficiency. Also spinning at 7200 RPM, this model exploits Seagate's Advanced Power Management technology, which helps reduce power consumption and extend drive longevity. The ST31000520AS is particularly appealing for users looking to balance performance with energy costs. It features similar specifications to the ST31500541AS, including a 6Gb/s interface and a 32MB cache, ensuring that users can manage large workloads effectively.

Lastly, the ST32000542AS offers a compelling 2TB storage solution. This model caters to users with extensive storage needs, whether it be for multimedia content, backup solutions, or database management. Like its predecessors, it runs at 7200 RPM and benefits from Seagate's innovative technologies, including error correction and data recovery enhancements. With increased storage capacity and performance, this model is particularly suited for both personal and professional setups where data loss is not an option.

In summary, the Seagate ST31500541AS, ST31000520AS, and ST32000542AS exemplify the company's commitment to delivering high-performance hard drive solutions. With their emphasis on speed, energy efficiency, and advanced technologies such as perpendicular recording and power management, each model stands out in its capacity range, making them valuable assets for users seeking dependable storage options. Whether you're a gamer, a creative professional, or need a reliable backup solution, these drives are engineered to meet diverse computing needs with ease.