Seagate ST9250421ASG, STBD1000100, ST980411ASG, ST9750420AS, 7200.3 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 8: 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

55H

Disable read look-ahead (read cache) feature.

82H

Disable write cache

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.

Momentus 7200.3 SATA Product Manual, Rev. C

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Contents Momentus 7200.3 Sata Page Contents Momentus 7200.3 Sata Product Manual, Rev. C List of Figures Page Introduction About the Serial ATA interface Specification summary table Drive specificationsAFR Formatted capacity LBA modePhysical organization Default logical geometryRecording and interface technology Cylinders Read/write heads Sectors per track 16,383Drive specification Physical characteristicsSeek time Typical seek timesStart/stop times Power specificationsConducted noise Typical current profileVoltage tolerance Power management modes Power-management modesActive mode Idle modeEnvironmental specifications Acoustics Electromagnetic immunity Free Fall Protection featureReliability Radio frequency environmentsAgency certification Safety certificationElectromagnetic compatibility Korean BCCFCC verification Corrosive environment Environmental protectionEuropean Union Restriction of Hazardous Substances RoHS China Restriction of Hazardous Substances RoHS DirectivePage Momentus 7200.3 Sata Product Manual, Rev. C Handling and static-discharge precautions Configuring and mounting the driveSerial ATA cables and connectors Configuring the driveDrive mounting Mounting dimensions-top, side and end viewMomentus 7200.3 Sata Product Manual, Rev. C Signal Serial ATA connector pin definitionsSerial ATA Sata interface Segment Pin Function DefinitionP10 Ground 2nd mate P11 Reserved Pin Function DefinitionCommand name Command code in hex ATA-standard commands Supported ATA commandsCommand name Command code in hex ATA-standard security commands Identify Device commandWord Description Value XxxxH Xx7FH Description if bit is set to Bit Set Features command values Set Features commandA.R.T. commands 3 S.M.A.R.T. commandsCode in features register A.R.T. command Warranty Support MySeagate Spp.seagate.com Seagate Technology support servicesInternet Presales Support Technical SupportData Recovery Services Authorized Service Centers Warranty ServiceCall Center Toll-free Direct dial Index ITE TPI Momentus 7200.3 Sata Product Manual, Rev. C Page Seagate Technology LLC
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ST9120411AS, ST9120411ASG, ST9250421AS, ST9750420AS, ST9160411AS specifications

Seagate has long been a prominent name in the storage industry, recognized for delivering reliable hard drives that cater to a variety of computing needs. The Seagate ST9200421AS, ST9160411ASG, ST980411ASG, ST9320421ASG, and ST9320421AS are notable hard drives that showcase the brand's commitment to performance and efficiency.

The ST9200421AS is a 2.5-inch SATA hard drive that boasts a storage capacity of 200GB. With a spindle speed of 5400 RPM, this model is optimized for low power consumption while maintaining adequate performance for everyday computing tasks. Its 8MB cache enhances data transfer rates, making it suitable for basic computing environments such as entry-level laptops.

Another model, the ST9160411ASG, also operates at a speed of 5400 RPM but offers a slightly larger storage capacity of 160GB. It incorporates advanced error correction technologies that improve data integrity and reliability. This drive is ideal for users looking to upgrade their existing storage without sacrificing battery life or performance in mobile devices.

The ST980411ASG steps up the capacity game with 160GB of storage as well but features Seagate's PowerSave technology that helps extend battery life in laptops. This is particularly beneficial for mobile users who require dependable storage while on the move. Combined with a 5400 RPM speed and 8MB cache, it balances performance with energy efficiency.

The ST9320421ASG offers a more substantial storage option of 320GB, matching the performance characteristics of its predecessors with a 5400 RPM spin rate. This drive includes features like QuietStep technology, which minimizes noise for a smoother user experience, making it excellent for quiet environments and multimedia applications.

Lastly, the ST9320421AS follows suit with similar specifications, catering to users who prioritize additional capacity alongside reliability. This model is ideal for users needing a dependable yet spacious storage solution for their laptops or compact desktops.

Overall, the Seagate ST9200421AS, ST9160411ASG, ST980411ASG, ST9320421ASG, and ST9320421AS hard drives exemplify the brand's innovation and commitment to quality. With features designed to enhance performance, efficiency, and user experience, these drives continue to be a solid choice for those seeking reliable storage solutions in various computing environments. With their varying capacities and features, users have the flexibility to select a model that best fits their storage needs while enjoying the reliability that Seagate is known for.
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