Maxtor 546106, 51536H2, 52049H3, 53073H4 ModeSet/CheckCommands, VAL UE DES C RIP Tion, Le Ve L

Page 47

INTERFACE COMMANDS

ModeSet/CheckCommands

Set Features Mode

Enables or disables features supported by the drive. When the drive receives this command it:

1.Sets BSY,

2.Checks the contents of the Features register,

3.Clears BSY and

4.Generates an interrupt.

If the value of the register is not a feature supported by the drive, the command is aborted. The acceptable values in the Features register are defined as follows:

VAL UE	DES C RIP TION

02h	Enabled Write Cache

03h	Set Transfer Mode based on value in Sector Count register

05h	Enable Advanced Power Management
42h	Enable Automatic Acoustic Management. The sector count register c ontains the
	Automatic Ac ous tic Management level.
	S EC TOR	LE VE L

	F Fh	Maxtor specific

	FEh	Maximum performance
	81h-FD h	Intermediate acoustic management levels

	80h	Minimum acoustic emanation level

	00h- 7Fh	reserved
44h	Length of data appended on Read Long/Write Long commands specified in the
	Identify D evice information
55h	Disable Read Look-ahead feature

66h	Disable reverting to Power-on defaults

82h	D isable Write Cache
85h	Disable Advanced Power Management

AAh	Enable Read Look-ahead feature
BBh	4 bytes of Maxtor specific data appended on Read Long/W rite Long commands

C2h	D isable Automatic Acoustic Management

CC h	Enable reverting to Power- on defaults

7 – 6

Image 47

Contents Corporate Headquarters REV EC N O SEC Tion Desc Ription ATE U T I O N Before You BeginContents Handling and Installation Product SpecificationsHost Software Interface Interface CommandsAT Interface Description Glossary Service and SupportFigures Abbreviations IntroductionMaxtorCorporation ManualOrganizationConventions Product Description KeyFeaturesModel S SP T MAX LB a Apac IT Y Product FeaturesFunctional / Interface CacheManagement MajorHDAComponents CylinderLimitationJumperDescription SubsystemConfigurationJumper Location / Configuration ModelsandCapacities ProductSpecificationsDriveConfiguration PerformanceSpecificationsAram E TE R Stan D ARD ME T RIC PhysicalDimensionsmaximumEnvironmentalLimits PowerRequirementsPowerModeDefinitions EPA Energy Star ComplianceParam E TE R OP ER AT ING ON- OPE R AT ING ReliabilitySpecificationsShock and Vibration EMC/EMI SafetyRegulatoryComplianceElectro-StaticDischargeESD HandlingandInstallationHardDriveHandlingPrecautions Multi-pack Shipping Container UnpackingandInspectionRepacking PhysicalInstallationHook up Before You BeginStart up Set upPIN IGN AL InterfaceConnectorATInterfaceDescription PinDescriptionSummaryPin Description Table PIN Name Signal Name Signal Desc RiptionPIO Timing IM in G Paramet ERS ModeDMATiming Imin G Paramet ERS ModeMode Ultra DMA TimingSustained 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 POR T EAD WR ITE HostSoftwareInterfaceTask File Registers Conten TS LBA Bits CommandRegister M M a N D N a M E M M a N D code PA R a M E T E R S U S E D SummaryControl Diagnostic Registers Reset and Interrupt Handling InterfaceCommands ReadCommands Read DMA WriteCommands Write Multiple LE VE L ModeSet/CheckCommandsVAL UE DES C RIP Tion VAL UE Omman D Timer VAL UE TIME-OUT Period PowerModeCommandsSleep Mode Or D ENT Desc Ription InitializationCommandsOr D 15- 10, as c urrently defined Initialize Drive Parameters ER ROR Code Desc Ription Seek,FormatandDiagnosticCommandsKey Register A.R.T. CommandSetSupport ServiceandSupportServicePolicy NoQuibbleServiceFrom Dial Glossary AccesstimeCorrectableerror Fetch Landingzoneorlzone Physicalsector Softerror