Seagate ST940110A manual Set Features command, Features register values, 4 S.M.A.R.T. commands

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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 8:

 

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

 

 

 

 

 

At power-on, or after a hardware or software reset, the default values of the features are as indicated above.

4.1.4S.M.A.R.T. commands

S.M.A.R.T. provides near-term failure prediction for disc drives. When S.M.A.R.T. is enabled, the drive moni- tors predetermined drive attributes that are susceptible to degradation over time. If self-monitoring determines that a failure is likely, S.M.A.R.T. makes a status report available to the host. Not all failures are predictable. S.M.A.R.T. predictability is limited to the attributes the drive can monitor. For more information on S.M.A.R.T. commands and implementation, see the Draft ATA-6 Standard.

Momentus 4200 N-Lite Product Manual, Rev. A

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Contents Momentus 4200 N-Lite Page Momentus 4200 N-Lite Page Revision status summary sheet Rev. a 10/26/2004 AllRevision Date Sheets Affected Page Contents Momentus 4200 N-Lite Product Manual, Rev. a List of Figures Viii Momentus 4200 N-Lite Product Manual, Rev. a Momentus 4200 N-Lite disc drive IntroductionMomentus 4200 N-Lite Product Manual, Rev. a Specification summary Drive specificationsSpecifications Drive specification ST940110ASpecifications LBA mode Default logical geometryFormatted capacity Physical organizationTechnology Specification Physical characteristicsRecording and interface technology Seek timeTime to ready Power specificationsTypical current profile Conducted noiseVoltage tolerance Power management modes Power-management modesActive mode Idle modeEnvironmental specifications Operating shock ShockNonoperating shock VibrationElectromagnetic immunity AcousticsDrive level acoustics Electromagnetic immunityMeasurement type Specification Safety certificationReliability Agency certificationKorean RRL Australian C-Tick N176FCC verification Handling and static discharge precautions Configuring and mounting the driveJumper settings Master/slave configurationCable-select option Drive mountingConnector signals ATA interface signals and connector pinsConnector Cable Signal Name Contact Conductor Cable Connector Conductor Contact Signal NameSupported ATA commands Supported commandsCommand name Command code in hex ATA-standard commands Command name Command code in hex ATA-standard power-management commandsATA-standard security commands Word Description Value Identify Device commandXx07H Description if bit is set to Bit Set Features command Features register values4 S.M.A.R.T. commands Code in features register A.R.T. command Supported S.M.A.R.T. commandsInternet MySeagate Reseller.seagate.com Seagate Technology support servicesPresales Support Technical SupportAuthorized Service Centers Warranty ServiceAmericas +1-405-324-47301 +1-405-324-4704 Call Center Toll-free Direct dialAmericas SEAGATE2 +1-405-324-47003 +1-405-324-4702 Call Center Toll-free Direct dial FAX / InternetFAX Services-All Europe toll call Call Center Presales and Technical Support Warranty ServiceToll-Free Support Numbers Asia/Pacific Support Services Momentus 4200 N-Lite Product Manual, Rev. a Numerics IndexPage Page Momentus 4200 N-Lite Product Manual, Rev. a Page Seagate Technology LLC
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