Seagate ST9250421AS manual Serial ATA Sata interface, Serial ATA connector pin definitions, Signal

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4.0Serial ATA (SATA) interface

These drives use the industry-standard Serial ATA interface that supports FIS data transfers. It supports ATA programmed input/output (PIO) modes 0–4; multiword DMA modes 0–2, and Ultra DMA modes 0–6. The drive also supports the use of the IORDY signal to provide reliable high-speed data transfers.

For detailed information about the Serial ATA interface, refer to the “Serial ATA: High Speed Serialized AT Attachment” specification.

4.1Hot-Plug compatibility

Momentus 7200.3 SATA drives incorporate connectors which enable you to hot plug these drives in accor- dance with the Serial ATA: High Speed Serialized AT Attachment specification revision 2.0. This specification can be downloaded from http://www.serialata.org. This device requires a COMRESET from the host after a hotplug event.

4.2Serial ATA device plug connector pin definitions

Table 7 summarizes the signals on the Serial ATA interface and power connectors..

Table 7:

Serial ATA connector pin definitions

 

 

 

 

Segment

Pin

Function

Definition

 

 

 

 

 

S1

Ground

2nd mate

 

 

 

 

 

S2

A+

Differential signal pair A from Phy

 

 

 

 

 

S3

A-

 

 

 

 

 

 

S4

Ground

2nd mate

 

 

 

 

 

S5

B-

Differential signal pair B from Phy

 

 

 

 

 

S6

B+

 

Signal

 

 

 

S7

Ground

2nd mate

 

 

 

 

Key and spacing separate signal and power segments

Momentus 7200.3 SATA Product Manual, Rev. B

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Contents Momentus 7200.3 Sata Page Contents Momentus 7200.3 Sata Product Manual, Rev. B 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 specificationsVoltage tolerance Typical current profileConducted noise 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 China Restriction of Hazardous Substances RoHS Directive Environmental protectionEuropean Union Restriction of Hazardous Substances RoHS Page Momentus 7200.3 Sata Product Manual, Rev. B 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. B 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 Word Description Value Identify Device commandATA-standard security commands XxxxH Xx7FH Bit Word Description if bit is set to Bit WordSet Features command values Set Features commandCode in features register A.R.T. command 3 S.M.A.R.T. commandsA.R.T. commands Warranty Support MySeagate Spp.seagate.com Seagate Technology support servicesInternet Presales Support Technical SupportCall Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Index ITE Sata Momentus 7200.3 Sata Product Manual, Rev. B Page Seagate Technology LLC
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ST9120411AS, ST9120411ASG, ST9250421AS, ST9160411AS, ST9200423ASG 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.

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