Maxtor 51536U3, 51024U2, 52049U4, 53073U6, 54098U8 specifications CommandRegister

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HOST SOFTWARE INTERFACE

CommandRegister

Contains code for the command to be performed. Additional command information should be written to the task file before the Command register is loaded. When this register is written, the BUSY bit in the Status register sets, and interrupt request to the host clears; invalid commands abort. (Detailed information on interface commands is given in Section 7.) Hex values for valid command formats follow:

Read Commands
Read Sector(s)	20h	Normal reads; retries enabled
	21h	Normal reads; retries disabled
	22h	Read Long; retries enabled
	23h	Read Long; retries disabled
Read Verify Sector(s)	40h	Retries	enabled
	41h	Retries	disabled
Read Sector Buffer	E4h
Read Multiple	C4h
Read DMA		C8h
	C9h	No retries
Write Commands
Write Sector(s)	30h	Normal writes; retries enabled
	31h	Normal writes; retries disabled
	32h	Write Long; retries enabled
	33h	Write Long; retries disabled
Write Verify Sector(s)	3Ch
Write Sector Buffer	E8h
Write Multiple	C5h
Write DMA	CAh
	CBh	No retries
Mode Set/Check Commands
Set Features	EFh
Set Multiple Mode	C6h
Power Mode Commands
Standby Immediate	94/E0h	Stops drive spindle; do not change time-out value
Idle Immediate	95/E1h	Starts spindle; do not change time-out value
Standby	96/E2h	Stops spindle; change time-out value
Idle	97/E3h	Starts spindle; change time-out value
Check Power Mode	98/E5h
Set Sleep Mode	99/E6h
Initialization Commands
Identify Drive	ECh
Initialize Drive Parameters	91h
Re-calibrate	1xh
Seek, Format, and Diagnostic Commands
Seek	7xh
Format Track	50h
Execute Drive Diagnostic	90h
S.M.A.R.T. Commands
Execute S.M.A.R.T.	B0h

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Contents DiamondMax Plus U T I O N Before You BeginContents Handling and Installation Product SpecificationsDiamondmax Plus 40 Product Manual AT Interface Description Interface CommandsHost Software Interface Glossary Service and SupportFigures MaxtorCorporation IntroductionManualOrganization AbbreviationsDiamondmax Plus 40 Introduction ConventionsProduct Description DiamondMax Plus 40 Key FeaturesFunctional / Interface Product FeaturesModel CYL SPT MAX LBA CapacityCacheManagement MajorHDAComponents Jumper Location / Configuration SubsystemConfigurationJumper Configuration CylinderLimitationJumperDescriptionDriveConfiguration ProductSpecificationsPerformanceSpecifications ModelsandCapacitiesProduct Specifications PhysicalDimensionsmaximumPowerModeDefinitions PowerRequirementsEPA Energy Star Compliance EnvironmentalLimitsShock and Vibration ReliabilitySpecificationsParameter Operating NON-OPERATING EMC/EMI SafetyRegulatoryComplianceHardDriveHandlingPrecautions HandlingandInstallationElectro-StaticDischargeESD UnpackingandInspection InstallationRepacking PhysicalInstallationHook up Before You BeginStart up Set upPIN Signal InterfaceConnectorATInterfaceDescription PinDescriptionSummaryPin Description Table PIN Name Signal Name Signal DescriptionAT Interface Description PIO Timing Timing Parameters ModeDMATiming Timing Parameters Mode 0 Mode 1 ModeUltra DMA Timing Mode MIN MAXSustained Ultra DMA Data In Burst Device Terminating an Ultra DMA Data In Burst Initiating an Ultra DMA Data Out Burst Device Pausing an Ultra DMA Data Out Burst Device Terminating an Ultra DMA Data Out Burst Task File Registers HostSoftwareInterfacePort Read Write Abrt TK0 AmnfBusy Drdy DSC DRQ ERR Contents LBA BitsHost Software Interface LBA DRV HS3 HS2 HS1 HS0CommandRegister Timer Value TIME-OUT Period Command Name Command Code Parameters UsedSummary SDHIEN Control Diagnostic RegistersDS0 Reset and Interrupt Handling InterfaceCommands Interface Commands ReadCommandsRead DMA WriteCommands Write Multiple Value Description SetFeatureCommandsPowerModeCommands Timer Value TIME-OUT Period Word Content Description InitializationCommands15-8 = PIO data transfer mode Interface Commands Word Content Description Initialize Drive Parameters Error Code Description Seek,FormatandDiagnosticCommandsKey Register A.R.T. CommandSetServicePolicy ServiceandSupportNoQuibble Service SupportFrom Dial Service and SupportGlossary Directaccess CorrectableerrorDirectmemoryaccess ErrorcorrectioncodeeccHeaddiskassemblyhda HarderrorExtrapulse FeedbackLandingzoneorlzone PhaselockedlooppllLatebit LatewindowRandomaccessmemoryram PhasemarginReadgatesignal RecoverableerrorStrobeoffsetsignal SofterrorUN-CORRECTABLEERROR Unrecoverableerror