Samsung spinpoint v40 manual Command Block Register Descriptions, Data Register 1F0h

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DISK DRIVE OPERATION

6.3.4 Command Block Register Descriptions

6.3.4.1Data Register (1F0h)

This 16-bit register is used to transfer data blocks between the device data buffer and the host. It is also the register through which sector information is transferred on a Format Track command. Data transfers may be either PIO or DMA.

6.3.4.2Features Register (1F1h)

This register is command specific and used to enable and disable features of the interface (e.g., by the Set Features command to enable and disable caching).

6.3.4.3Sector Number Register (1F3h)

In CHS mode this register contains the starting sector number for any disk data access for the subsequent command. The sector number is from 1 to the maximum number of sectors per track. In LBA mode this register contains bits 0-7 of the LBA.

See the command descriptions for the contents of the register at command completion (whether successful or unsuccessful).

6.3.4.4Error Register (1F1h)

This register contains status from the last command executed by the drive or a Diagnostic Code.

At the completion of any command except Execute Drive Diagnostic, the contents of this register are valid when ERR=1 in the Status register.

Following a power-on, a reset, or completion of an Execute Drive Diagnostic command, this register contains a Diagnostic Code (see Table 6-4).

7	6	5	4	3	2	1	0
ICRCE	UNC	0	IDNF	0	ABRT	TK0NF	AMNF

•ICRCE (Interface CRC Error) indicates a CRC error has occurred on the data bus during a Ultra- DMA transfer.

•UNC (Uncorrectable Data Error) indicates an uncorrectable data error has been encountered.

•IDNF (ID Not Found) indicates the requested sector's ID field could not be found.

•ABRT (Aborted Command) indicates the requested command has been aborted due to a drive status error (Not Ready, Write Fault, etc.) or because the command code is invalid.

•K0NF (Track 0 Not Found) indicates track 0 has not been found during a Recalibrate command.

•AMNF (Address Mark Not Found) indicates the data address mark has not been found after finding the correct ID field.

NOTE: Unused bits are cleared to zero.

50	SpinPoint V40 Product Manual

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Contents Spinpoint SpinPoint V40 Product Manual Table of Contents Irmware F Eatures Ervo S Ystem EAD and W Rite O PerationsSmart Protocol Overview Programming RequirementsTiming 107 Maintenance PrecautionsService and Repair General InformationTable of Figures Page Manual Organization User DefinitionScope Computer Message Commands and MessagesTerminology and Conventions Format C/SReference Introduction Key FeaturesDescription Standards and Regulations Hardware RequirementsSpecification Summary SpecificationsPhysical Specifications Logical ConfigurationsPerformance Specifications Power Requirements 28.71Environmental Specifications SV6003H SV6014H SV8004HReliability Specifications Mtbf POHInstallation Space RequirementsMounting Unpacking InstructionsOrientation 2Mounting Dimensions in Millimeters Clearance 3Mounting-Screw ClearanceAT-Bus Interface Connector Cable ConnectorsDC Power Connector VentilationSpinPoint V40 Product Manual Jumper Block Configurations Options for Jumper Block Configuration Drive Installation 7DC Power Connector and AT-Bus Interface Cable ConnectionsSystem Startup Procedure ParameterSystem Setup DC Spindle Motor Assembly Head / Disk Assembly HDABase Casting Assembly Disk Drive OperationExploded Mechanical View Voice Coil Motor and Actuator Latch Assemblies Disk Stack AssemblyHead Stack Assembly Air Filtration SystemDrive Electronics Digital Signal Process and Interface ControllerAT Disk Controller 2SID2001 AT Controller Block Diagram Host Interface Control Block Buffer Control Block Disk Control BlockSpinPoint V40 Product Manual Disk ECC Control Block Power ManagementRead/Write IC Frequency SynthesizerAsymmetry Correction Circuitry ASC Time Base GeneratorAutomatic Gain Control Analog Anti-Aliasing Low Pass Filter3Read/Write 88C5200 Read and Write Operations Servo SystemRead Channel Write Channel Firmware FeaturesRead Caching Write Caching Multi-burst ECC Correction Defect ManagementAutomatic Defect Allocation SmartBlank Signal Summary Signal ConventionsPhysical Interface Signal Descriptions Intrq Drive Interrupt DMACK- DMA AcknowledgeDmarq DMA Request IOCS16- Drive 16-bit I/ORESET- Drive Reset PDIAG- Passed DiagnosticsIordy I/O Channel Ready SD3 SD8 SD6 SD9 SD5SD4 SD2Drive Drive HostDIR Bit Conventions Logical InterfaceGeneral EnvironmentSpinPoint V40 Product Manual Control Block Registers Command Block Registers2 I/O Register Address N N N A a aDrive Address Register 3F7h Control Block Register DescriptionsAlternate Status Register 3F6h Device Control Register 3F6hError Register 1F1h Command Block Register DescriptionsFeatures Register 1F1h Data Register 1F0hCylinder High Register 1F5h Command Register 1F7hSector Count Register 1F2h Cylinder Low Register 1F4hStatus Register 1F7h BSY Drdy DWF DSC DRQ Corr IDX ERRAt Command Register Descriptions Command Parameter Used SpinPoint V40 Product Manual Execute Device Diagnostics 90h Check Power Mode 98h, E5hDownload Micro Code 92h Format Track 50h Flush Cache E7hIdentify Device ECh Word Content Description XxxxCapabilities Command set supported 95-128 0000h Reserved 129-159 Vendor specific 160-255 Idle Immediate 95h,E1h Idle 97h,E3hInitialize Device Parameters 91h Read Buffer E4h Read Long 22hwith retry, 23h without retryRead Multiple Command C4h Read Native Max Address F8h Read Sectors 20hwith retry, 21hwithout retryRecalibrate 1xh Read Verify Sectors 40hwith retry, 41hwithout retrySeek 7xh Set Features EFh ModeNormal outputs InputsLBA BSY Drdy DRQ ERRDescription Set Multiple Mode C6h Sleep 99h, E6hStandby 96h,E2h Smart disable operation D9hSmart B0h Smart enable operations D8h Smart enable/disable attribute autosave D2hSmart execute off-line immediate D4h Smart read data D0h Byte DescriptionsValue Definition Off-line data collection capabilitySmart return status DAh Smart capabilitySmart read log sector D5h Smart save attribution value D3hWrite Buffer E8h Standby 96h, E2hStandby Immediate 94h, E0h Write DMA CAhWrite Multiple Command C5h Write Sectors 30hwith retry, 31hwithout retrySpinPoint V40 Product Manual Error Posting Reset ResponseProgramming Requirements Command Error Register Status Register BBKStandby mode Power ConditionsSleep mode Idle modeNormal mode PIO Data in Commands Protocol OverviewPIO Read Command PIO Data Out CommandsPIO Read Aborted Command BSY=0 DRDY=1 BSY=1 PIO Write CommandPIO Write Aborted Command BSY=0 DRQ=1 BSY=1 DRQ=0Non-Data Commands DMA Data Transfer Commands BSY=0 BSY=1 Aborted DMA Command Initialize DMA Reset DMA StatusBSY=1 BSY=0 Timing Register transfersDIOR-/DIOW Write PIO timing parameters Mode PIO data transfersAddr valid See note T1 t2 DIOR-/DIOW Multiword DMA data transfer DIOR-/DIOWMultiword DMA timing parameters Mode Ultra DMA data transfer Initiating an Ultra DMA data in burstUltra DMA data burst timing requirements 19Ultra DMA data burst timing requirementsSustained Ultra DMA data in burst 5Sustained Ultra DMA data in burstHost pausing an Ultra DMA data in burst 6Host pausing an Ultra DMA data in burstDevice terminating an Ultra DMA data in burst 7Device terminating an Ultra DMA data in burst 100Host terminating an Ultra DMA data in burst 8Host terminating an Ultra DMA data in burstInitiating an Ultra DMA data out burst 9Initiating an Ultra DMA data out burst 102Sustained Ultra DMA data out burst 10Sustained Ultra DMA data out burstDevice pausing an Ultra DMA data out burst 11Device pausing an Ultra DMA data out burst 104Host terminating an Ultra DMA data out burst 12Host terminating an Ultra DMA data out burstDevice terminating an Ultra DMA data out burst 13Device terminating an Ultra DMA data out burst 106Service And Repair Maintenance PrecautionsGeneral Information