Seagate ST980817AM, ST980818AM, ST980817SM, ST980818SM, ST960817AM manual Set Features command, 0CH

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4.5Set 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:

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

05H

Enable advanced power management

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 indicated above.

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EE25.2 Series Product Manual, Rev. E

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Contents EE25.2 Series Page Contents EE25.2 Series Product Manual, Rev. E List of Figures EE25.2 Series Product Manual, Rev. E Introduction Market Capacity Interface ModelPage Drive specifications Specification summarySpecifications for 80 Gbyte models Pata SataGs 0 to peak, 5-500 Hz X, Y, Z axis, 45 angles Specifications for 60 Gbyte models EE25.2 Series Product Manual, Rev. E Specifications for 40 Gbyte models EE25.2 Series Product Manual, Rev. E Specifications for 30 Gbyte models EE25.2 Series Product Manual, Rev. E Default logical geometry LBA modeFormatted capacity Cylinders Read/write heads Sectors per track 16,383Technology Specification Physical organizationRecording technology Model Read/write heads Number of disksPhysical characteristics Read all temperatures Write all temperaturesSeek time Typical MaxPower specifications Start/stop timesPower dissipation 25C +5V AverageWatts Amps Typical current profile Conducted noiseVoltage tolerance Power-management modes Active modeIdle mode Sleep modeEnvironmental specifications AltitudeAcoustics Nonoperating shockVibration Operating vibrationAcoustic mode Idle Seeks Bels typ Bels maxElectromagnetic immunity Test Description Performance Reference Level StandardSafety certification ReliabilityAgency certification Electromagnetic compatibilityAustralian C-Tick N176 FCC verificationEnvironmental protection Corrosive environmentEuropean Union Restriction of Hazardous Substances RoHS EE25.2 Series Product Manual, Rev. E Mounting and configuring the drive Handling and static discharge precautionsDrive mounting Mounting dimensions-top, side and end view Breather filter hole precautions Breather filter hole locationHow to configure the drive How to connect Sata cablesHow to configure Parallel ATA Pata drives How to configure the drive as a master or slaveHow to use the cable-select option EE25.2 Series Product Manual, Rev. E Interface RefererenceSerial ATA connector pin definitions Serial ATA Sata interfaceSegment Pin Function Definition Power Pin Function DefinitionPata interface signals and connector pins Connector signalsConnector Cable Signal Name Contact Conductor Cable Connector Conductor Contact Signal NameSupported ATA commands Command name Command code in hex ATA-standard commandsCommand name Command code in hex ATA-standard power-management commandsATA-standard security commands Identify Device command Word Description ValueXxxxH Description if bit is set to Bit Set Features command 0CHS.M.A.R.T. commands A.R.T. commandsCode in features register A.R.T. command EE25.2 Series Product Manual, Rev. E Seagate Technology support services InternetPresales Support Technical SupportWarranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index NumericsPage Page EE25.2 Series Product Manual, Rev. E Page Seagate Technology LLC

ST940817SM, ST940818SM, ST960817SM, ST930817AM, ST960818AM specifications

Seagate has consistently been a leader in the field of data storage solutions, and their lineup of hard disk drives caters to a variety of needs. Among these, the ST980818SM, ST940817AM, ST940817SM, ST940818AM, and ST960817AM models stand out for their performance, reliability, and innovative technologies.

The ST980818SM is a 2.5-inch, 7200 RPM hard drive that offers a storage capacity of 80 GB, making it ideal for both personal and professional use. It features an SATA interface, providing high-speed data transfer rates that facilitate quick access to stored content. The drive also incorporates Seagate's advanced error correction technology, which enhances data integrity and longevity.

On the other hand, the ST940817AM and ST940817SM models are designed for mobile computing environments, providing a capacity of 40 GB each. These drives are notable for their low power consumption, which helps extend battery life in laptops and portable devices. They also utilize Seagate’s QuietStep positioning technology, reducing seek noise and promoting a quieter operation.

The ST940818AM offers a slightly larger capacity of 80 GB while retaining the same energy efficiency and sound-dampening features as its ST940817 counterparts. This drive is particularly suitable for consumers looking for a balance between performance and noise reduction, especially in environments where quiet is a priority.

Lastly, the ST960817AM distinguishes itself with a capacity of 60 GB and a 5400 RPM speed, making it a more economical option without sacrificing reliability. This model is suitable for users who need adequate storage for applications and media but are conscious of budget constraints.

All these drives incorporate Seagate's proprietary technology, ensuring robust performance across various applications. These include optimizations for thermal management, enhancing durability and reliability even under intensive usage.

With their various capacities and features, Seagate's ST980818SM, ST940817AM, ST940817SM, ST940818AM, and ST960817AM hard drives offer flexible solutions for users ranging from casual home use to demanding professional environments. Whether the requirement is for storage efficiency, noise reduction, or reliability, Seagate's drives deliver exceptional value and performance tailored to diverse data storage needs.
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