Seagate Understanding Set Features Command for ST3320413CS Drives

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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 9: 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

06H

Enable the PUIS feature set

07H

PUIS feature set device spin-up

10H

Enable use of SATA features

55H

Disable read look-ahead (read cache) feature.

82H

Disable write cache

86H

Disable the PUIS feature sete

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.

Video 3.5 HDD Product Manual, Rev. J

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Contents Video 3.5 HDD Revision Date Sheets affected or comments Revision historyPipeline HD.2 Series Sata Product Manual, Rev. J Pipeline HD.2 Series Sata Product Manual, Rev. J Contents Pipeline HD.2 Series Sata Product Manual, Rev. J Introduction About the Serial ATA interface Specification summary tables Drive specificationsDrive specification ST31000424CS ST31000322CS Drive specifications summary for 1000GB modelsVideo 3.5 HDD Product Manual, Rev. J Drive specifications summary for 500 and 320GB models Video 3.5 HDD Product Manual, Rev. J Drive specification ST3250412CS ST3250312CS ST3160316CS Drive specifications summary for 250 and 160GB modelsVideo 3.5 HDD Product Manual, Rev. J Recording and interface technology Default logical geometryLBA mode Formatted capacityPhysical characteristics Seek timeStart/stop times Power specifications Typical current profiles Conducted noiseVoltage tolerance Sleep mode Power management modesActive mode Idle modeEnvironmental specifications Vibration ShockOperating shock Non-operating shockTest for Prominent Discrete Tones PDTs Drive A-weighted Sound Power Levels SWL, BAAcoustics emissions Electromagnetic immunityAnnualized Failure Rate AFR Safety certificationReliability Agency certificationKorean RRL Australian C-Tick N176FCC verification Environmental protection Corrosive environmentChina Restriction of Hazardous Substances RoHS Directive Handling and static-discharge precautions Configuring and mounting the driveSerial ATA cables and connectors Configuring the driveDrive mounting Mounting dimensions for 1000GB modelsMounting dimensions for 500, 320, 250 and 160GB models Hot-Plug compatibility Serial ATA Sata interfacePin Function Definition Serial ATA device plug connector pin definitionsSerial ATA connector pin definitions SignalSupported 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 WordIdle Immediate command with Iunload faeture is supported Set Features command values Set Features command3 S.M.A.R.T. commands M.A.R.T. commandsCode in features register A.R.T. command Seagate Technology support services Warranty Service Data Recovery Services Authorized Service CentersData Recovery Services Call Center Toll-free Direct dial Index RRL Page Video 3.5 HDD Product Manual, Rev. J Page Seagate Technology LLC
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