Recalibrate 1xh, Seek 7xh | Samsung spinpoint v40 guide

DISK DRIVE OPERATION

6.4.16 Read Verify Sector(s) (40h:with retry, 41h:without retry)

This command is identical to the Read Sectors command, except that DRQ is never set, and no data is transferred to the host. See 6.6.3 for the protocol. When the command is accepted, the drive sets BSY.

When the requested sectors have been verified, the drive clears BSY and generates an interrupt. Upon command completion, the Command Block registers contain the cylinder, head, and sector number of the last sector verified in CHS mode or of the logical block address in LBA mode. If an error occurs, the Verify terminates at the sector where the error occurred.

The Command Block registers contain the cylinder, head, and sector number in CHS mode, or the logical block address in LBA mode where the error occurred. The Sector Count register contains the number of sectors not yet verified.

6.4.17 Recalibrate (1xh)

This command moves the read/write heads from anywhere on the disk to cylinder 0. Upon receipt of the command, the drive sets BSY and issues a seek to cylinder zero. The drive then waits for the seek to complete before updating status, clearing BSY, and generating an interrupt. If the drive cannot reach cylinder 0, it posts a Track 0 Not Found error.

6.4.18 Seek (7xh)

This command initiates a seek to the track and selects the head specified in the command block. The drive need not be formatted for a seek to execute properly. Refer to section 6.6.3 for the protocol. The drive shall not set DSC=1 until the action of seeking has completed. The drive may return the interrupt before the seek is completed.

If another command is issued to the drive while a seek is being executed, the drive sets BSY=1, waits for the seek to complete, and then begins execution of the command.

66	SpinPoint V40 Product Manual

Image 74

Samsung spinpoint v40 manual Read Verify Sectors 40hwith retry, 41hwithout retry, Recalibrate 1xh, Seek 7xh

Contents

Spinpoint SpinPoint V40 Product Manual Table of Contents Smart Ervo S Ystem EAD and W Rite O PerationsIrmware F Eatures Timing Programming RequirementsProtocol Overview 107 Maintenance PrecautionsService and Repair General Information Table of Figures Page Scope User DefinitionManual Organization Computer Message Commands and MessagesTerminology and Conventions Format C/S Reference Description Key FeaturesIntroduction Standards and Regulations Hardware Requirements Specification Summary Specifications Physical Specifications Logical Configurations Performance Specifications Power Requirements 28.71 Environmental Specifications SV6003H SV6014H SV8004H Reliability Specifications Mtbf POH Installation Space Requirements Orientation Unpacking InstructionsMounting 2Mounting Dimensions in Millimeters Clearance 3Mounting-Screw Clearance AT-Bus Interface Connector Cable ConnectorsDC Power Connector Ventilation SpinPoint V40 Product Manual Jumper Block Configurations Options for Jumper Block Configuration Drive Installation 7DC Power Connector and AT-Bus Interface Cable Connections System Startup Procedure Parameter System Setup DC Spindle Motor Assembly Head / Disk Assembly HDABase Casting Assembly Disk Drive Operation Exploded Mechanical View Voice Coil Motor and Actuator Latch Assemblies Disk Stack AssemblyHead Stack Assembly Air Filtration System AT Disk Controller Digital Signal Process and Interface ControllerDrive Electronics 2SID2001 AT Controller Block Diagram Host Interface Control Block Buffer Control Block Disk Control Block SpinPoint V40 Product Manual Disk ECC Control Block Power ManagementRead/Write IC Frequency Synthesizer Asymmetry Correction Circuitry ASC Time Base GeneratorAutomatic Gain Control Analog Anti-Aliasing Low Pass Filter 3Read/Write 88C5200 Read Channel Servo SystemRead and Write Operations Read Caching Firmware FeaturesWrite Channel Write Caching Multi-burst ECC Correction Defect ManagementAutomatic Defect Allocation Smart Blank Physical Interface Signal ConventionsSignal Summary Signal Descriptions Intrq Drive Interrupt DMACK- DMA AcknowledgeDmarq DMA Request IOCS16- Drive 16-bit I/O Iordy I/O Channel Ready PDIAG- Passed DiagnosticsRESET- Drive Reset SD3 SD8 SD6 SD9 SD5SD4 SD2 Drive Drive Host DIR Bit Conventions Logical InterfaceGeneral Environment SpinPoint V40 Product Manual Control Block Registers Command Block Registers2 I/O Register Address N N N A a a Drive Address Register 3F7h Control Block Register DescriptionsAlternate Status Register 3F6h Device Control Register 3F6h Error Register 1F1h Command Block Register DescriptionsFeatures Register 1F1h Data Register 1F0h Cylinder High Register 1F5h Command Register 1F7hSector Count Register 1F2h Cylinder Low Register 1F4h Status Register 1F7h BSY Drdy DWF DSC DRQ Corr IDX ERR At Command Register Descriptions Command Parameter Used SpinPoint V40 Product Manual Download Micro Code 92h Check Power Mode 98h, E5hExecute Device Diagnostics 90h Identify Device ECh Flush Cache E7hFormat Track 50h Word Content Description Xxxx Capabilities Command set supported 95-128 0000h Reserved 129-159 Vendor specific 160-255 Initialize Device Parameters 91h Idle 97h,E3hIdle Immediate 95h,E1h Read Buffer E4h Read Long 22hwith retry, 23h without retry Read Multiple Command C4h Read Native Max Address F8h Read Sectors 20hwith retry, 21hwithout retry Seek 7xh Read Verify Sectors 40hwith retry, 41hwithout retryRecalibrate 1xh Set Features EFh Mode Normal outputs InputsLBA BSY Drdy DRQ ERR Description Set Multiple Mode C6h Sleep 99h, E6h Smart B0h Smart disable operation D9hStandby 96h,E2h Smart execute off-line immediate D4h Smart enable/disable attribute autosave D2hSmart enable operations D8h Smart read data D0h Byte Descriptions Value Definition Off-line data collection capability Smart return status DAh Smart capabilitySmart read log sector D5h Smart save attribution value D3h Write Buffer E8h Standby 96h, E2hStandby Immediate 94h, E0h Write DMA CAh Write Multiple Command C5h Write Sectors 30hwith retry, 31hwithout retry SpinPoint V40 Product Manual Programming Requirements Reset ResponseError Posting Command Error Register Status Register BBK Standby mode Power ConditionsSleep mode Idle mode Normal mode PIO Data in Commands Protocol Overview PIO Read Aborted Command PIO Data Out CommandsPIO Read Command BSY=0 DRDY=1 BSY=1 PIO Write CommandPIO Write Aborted Command BSY=0 DRQ=1 BSY=1 DRQ=0 Non-Data Commands DMA Data Transfer Commands BSY=1 BSY=0 Aborted DMA Command Initialize DMA Reset DMA StatusBSY=0 BSY=1 Timing Register transfers DIOR-/DIOW Write PIO timing parameters Mode PIO data transfers Addr valid See note T1 t2 DIOR-/DIOW Multiword DMA data transfer DIOR-/DIOW Multiword DMA timing parameters Mode Ultra DMA data transfer Initiating an Ultra DMA data in burst Ultra DMA data burst timing requirements 19Ultra DMA data burst timing requirements Sustained Ultra DMA data in burst 5Sustained Ultra DMA data in burst Host pausing an Ultra DMA data in burst 6Host pausing an Ultra DMA data in burst Device terminating an Ultra DMA data in burst 7Device terminating an Ultra DMA data in burst 100 Host terminating an Ultra DMA data in burst 8Host terminating an Ultra DMA data in burst Initiating an Ultra DMA data out burst 9Initiating an Ultra DMA data out burst 102 Sustained Ultra DMA data out burst 10Sustained Ultra DMA data out burst Device pausing an Ultra DMA data out burst 11Device pausing an Ultra DMA data out burst 104 Host terminating an Ultra DMA data out burst 12Host terminating an Ultra DMA data out burst Device terminating an Ultra DMA data out burst 13Device terminating an Ultra DMA data out burst 106 General Information Maintenance PrecautionsService And Repair