Maxtor 2B010H1, 2B015H1, 2B020H1 manual CommandRegister, Seek, Format, and Diagnostic Commands

Page 37

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
Read Native Max Address	F8h
Set Max Mode	F9h
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

6 – 3

Image 37

Contents Maxtor 541DX Product Manual U T I O N Before You BeginContents Handling and Installation Product SpecificationsAT Interface Description Interface CommandsHost Software Interface Glossary Service and SupportFigures MaxtorCorporation IntroductionManualOrganization AbbreviationsConventions ProductDescription Key FeaturesFunctional / Interface Product FeaturesModels CYL SP T MAX LBA Capacity CacheManagement Major HDA Components Jumper Location / Configuration SubsystemConfigurationJumper Configuration Cylinder Limitation Jumper DescriptionDrive Configuration ProductSpecificationsPerformanceSpecifications Models and CapacitiesParam Eter Valu E Physical DimensionsPower Mode Definitions PowerRequirementsEPA Energy Star Compliance Environmental LimitsShock and Vibration Reliability SpecificationsParam Eter Oper AT ING ON- Oper AT ING EMC/EMI Safety Regulatory ComplianceHard Drive Handling Precautions HandlingandInstallationElectro-Static Discharge ESD Multi-pack Shipping Container Unpacking and InspectionRepacking Physical InstallationHook up Before You BeginStart up Set upATInterfaceDescription InterfaceConnectorPinDescriptionSummary PIN IGN ALPin 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 Task File Registers HostSoftwareInterfacePOR T EAD WR ITE Conten TS LBA Bits Seek, Format, and Diagnostic Commands CommandRegisterM 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 VAL UE DES C RIP Tion ModeSet/CheckCommandsEC TOR LE VE L 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. CommandSetService Policy ServiceandSupportNo Quibble Service Product SupportFrom Dial Glossary Central processing unit CPU Correctable errorChannel CharacterDirect memory access DMA Direct accessError correction code ECC Error freeHead disk assembly HDA Hard errorFrequency response Gigabyte GBLatency Late windowLogic Logical addressPhase margin Phase locked loop PLLRandom access memory RAM Read gate signalSeek complete signal Sector pulse signalSequential access Soft errorUn-correctable error Strobe offset signalUnrecoverable error Write gate signal