Check Power Mode 98h, E5h | Samsung spinpoint v40 guide

DISK DRIVE OPERATION

6.4.1Check Power Mode (98h, E5h)

This command checks the power mode.

If the drive is in, going to, or recovering from the Standby Mode, the drive sets BSY, sets the Sector Count register to 00h, clears BSY, and generates an interrupt.

If the drive is in the Idle Mode, the drive sets BSY, sets the Sector Count register to FFh, clears BSY, and generates an interrupt.

6.4.2Download Micro Code (92h)

This command enables the host to alter the drive’s Micro-code. The data transferred using this command is vendor specific.

6.4.3 Execute Device Diagnostics (90h)

This command performs the internal diagnostic tests implemented by the drive. The DRV bit is ignored. Both drives, if present, shall execute this command.

If Drive 1 is present:

•Drive 1 asserts PDIAG- within 5 seconds.

•Drive 0 waits up to 6 seconds for Drive 1 to assert PDIAG-.

•If Drive 1 has not asserted PDIAG-, indicating a failure, Drive 0 appends 80h to its own diagnostic status.

•Both drives execute diagnostics.

•If a Drive 1 diagnostic failure is detected when Drive 0 status is read, then Drive 1 status is obtained by setting the DRV bit, and reading status.

If there is no Drive 1 present:

•Drive 0 posts only its own diagnostic results.

•Drive 0 clears BSY, and generates an interrupt.

The Diagnostic Code written to the Error register is a unique 8-bit code (shown in Table 6-5), not as the single bit flags defined in 6.3.4.4.

If Drive 1 fails diagnostics, Drive 0 "ORs" 80h with its own status and loads that code into the Error register. If Drive 1 passes diagnostics or there is no Drive 1 connected, Drive 0 "ORs" 00h with its own status and loads that code into the Error register.

56	SpinPoint V40 Product Manual

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Samsung spinpoint v40 manual Check Power Mode 98h, E5h, Download Micro Code 92h, Execute Device Diagnostics 90h

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 Maintenance Precautions Service and Repair107 General Information Table of Figures Page Manual Organization User DefinitionScope Commands and Messages Terminology and ConventionsComputer Message Format C/S Reference Introduction Key FeaturesDescription 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 Mounting Unpacking InstructionsOrientation 2Mounting Dimensions in Millimeters Clearance 3Mounting-Screw Clearance Cable Connectors DC Power ConnectorAT-Bus Interface 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 Head / Disk Assembly HDA Base Casting AssemblyDC Spindle Motor Assembly Disk Drive Operation Exploded Mechanical View Disk Stack Assembly Head Stack AssemblyVoice Coil Motor and Actuator Latch Assemblies Air Filtration System Drive Electronics Digital Signal Process and Interface ControllerAT Disk Controller 2SID2001 AT Controller Block Diagram Host Interface Control Block Buffer Control Block Disk Control Block SpinPoint V40 Product Manual Power Management Read/Write ICDisk ECC Control Block Frequency Synthesizer Time Base Generator Automatic Gain ControlAsymmetry Correction Circuitry ASC Analog Anti-Aliasing Low Pass Filter 3Read/Write 88C5200 Read and Write Operations Servo SystemRead Channel Write Channel Firmware FeaturesRead Caching Write Caching Defect Management Automatic Defect AllocationMulti-burst ECC Correction Smart Blank Signal Summary Signal ConventionsPhysical Interface Signal Descriptions DMACK- DMA Acknowledge Dmarq DMA RequestIntrq Drive Interrupt IOCS16- Drive 16-bit I/O RESET- Drive Reset PDIAG- Passed DiagnosticsIordy I/O Channel Ready SD8 SD6 SD9 SD5 SD4SD3 SD2 Drive Drive Host DIR Logical Interface GeneralBit Conventions Environment SpinPoint V40 Product Manual Command Block Registers 2 I/O Register AddressControl Block Registers N N N A a a Control Block Register Descriptions Alternate Status Register 3F6hDrive Address Register 3F7h Device Control Register 3F6h Command Block Register Descriptions Features Register 1F1hError Register 1F1h Data Register 1F0h Command Register 1F7h Sector Count Register 1F2hCylinder High Register 1F5h 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 Execute Device Diagnostics 90h Check Power Mode 98h, E5hDownload Micro Code 92h Format Track 50h Flush Cache E7hIdentify Device ECh Word Content Description Xxxx Capabilities 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 retry Read Multiple Command C4h Read Native Max Address F8h Read Sectors 20hwith retry, 21hwithout retry Recalibrate 1xh Read Verify Sectors 40hwith retry, 41hwithout retrySeek 7xh Set Features EFh Mode Inputs LBANormal outputs BSY Drdy DRQ ERR Description Set Multiple Mode C6h Sleep 99h, E6h Standby 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 Descriptions Value Definition Off-line data collection capability Smart capability Smart read log sector D5hSmart return status DAh Smart save attribution value D3h Standby 96h, E2h Standby Immediate 94h, E0hWrite Buffer E8h Write DMA CAh Write Multiple Command C5h Write Sectors 30hwith retry, 31hwithout retry SpinPoint V40 Product Manual Error Posting Reset ResponseProgramming Requirements Command Error Register Status Register BBK Power Conditions Sleep modeStandby mode Idle mode Normal mode PIO Data in Commands Protocol Overview PIO Read Command PIO Data Out CommandsPIO Read Aborted Command PIO Write Command PIO Write Aborted CommandBSY=0 DRDY=1 BSY=1 BSY=0 DRQ=1 BSY=1 DRQ=0 Non-Data Commands DMA Data Transfer Commands BSY=0 BSY=1 Aborted DMA Command Initialize DMA Reset DMA StatusBSY=1 BSY=0 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 Service And Repair Maintenance PrecautionsGeneral Information