Seagate ST980815AB, ST9402116AB, ST960815AB manual Set Features command, Features register values

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4.1.3Set 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:

 

Features register 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

 

 

 

 

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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Momentus 5400.3 PATA Blade Server Product Manual, Rev. B

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Contents Momentus5400.3 Blade Server Page Contents Momentus 5400.3 Pata Blade Server Product Manual, Rev. B List of Figures Momentus 5400.3 Pata Blade Server Product Manual, Rev. B Introduction Momentus 5400.3 Pata Blade Server Product Manual, Rev. B Specifications for 160 and 120 Gbyte models Drive specificationsSpecification summary Drive specification ST9160821AB ST9120822ABSeek power typical Watts Read/write power typical Specifications for 100 and 80 Gbyte models Drive specification ST9100828AB ST980815ABTo access the following web Specifications for 60 and 40 Gbyte models Drive specification ST960815AB ST9402116ABSpecifications for 60 and 40 Gbyte models Formatted capacity Default logical geometryLBA mode Physical organizationRecording and interface technology Physical characteristicsTechnology Specification Typical seek times msec Read Write Seek timeTime to ready Time to ready Typical Max @ 25CPower specifications Voltage tolerance Typical current profileConducted noise Environmental specifications Nonoperating shock ShockOperating shock VibrationDrive level acoustics AcousticsElectromagnetic immunity Electromagnetic immunityReliability Safety certificationMeasurement type Specification Agency certificationFCC verification Korean RRLAustralian C-Tick N176 European Union Restriction of Hazardous Substances RoHS Environmental protectionCorrosive environment Momentus 5400.3 Pata Blade Server Product Manual, Rev. B Configuring and mounting the drive Handling and static discharge precautionsCable-select option Jumper settingsMaster/slave configuration Mounting dimensions-top, side and end view Drive mountingMomentus 5400.3 Pata Blade Server Product Manual, Rev. B Connector Cable Signal Name Contact Conductor ATA interface signals and connector pinsConnector signals Cable Connector Conductor Contact Signal NameCommand name Command code in hex ATA-standard commands Supported ATA commandsSupported commands ATA-standard security commands Command name Command code in hexATA-standard power-management commands Supported commands Identify Device command Word Description ValueXx07H Description if bit is set to Bit Word Bit WordSet Features command Features register valuesPresales Support Seagate Technology support servicesInternet Technical SupportData Recovery Services Call Center Toll-free Direct dial Warranty ServiceData Recovery Services Authorized Service Centers Index NumericsPage TMR Momentus 5400.3 Pata Blade Server Product Manual, Rev. B Page Seagate Technology LLC
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ST960815AB, ST9120822AB, ST9160821AB, ST9402116AB, ST980815AB specifications

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