Samsung M8 manual Command Block Register Descriptions, Device Control Register ex F6h

Page 46

6.3.3.2Device Control Register (ex. 3F6h)

The bits in this register are as follows:

7

6 5

 

4

3 2

 

1

0

HOB

R

R

R

R

SRST

nIEN

0

 

 

 

 

 

 

 

 

HOB is the High Order Byte used for host to access the Extended Registers in the 48-bit LBA mode

SRST is the host software reset bit. The drive is held reset when this bit is set. If two disk drives are daisy chained on the interface, this bit resets both simultaneously.

nIEN is the enable bit for the drive interrupt to the host. When nIEN=0, and the drive is selected, INTRQ is enabled through a tri-state buffer. When nIEN=1, or the drive is not selected, the INTRQ signal is in a high impedance state.

R is for reserved

6.3.4Command Block Register Descriptions

6.3.4.1Data Register (Ex. 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 and Feature Extended Register (Ex. 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). The Feature Extended Register contains the upper byte of the Feature Register.

6.3.4.3Sector Number Register and Sector Number Extended Register (Ex. 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. The Sector Number Extended Register is for bits 25-31 of the 48-bit LBA. See the command descriptions for the contents of the register at command completion (whether successful or unsuccessful).

6.3.4.4Error Register (Ex. 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.

7

6 5

 

4 3

 

2 1

 

0

#

#

#

#

#

ABRT

#

#

 

 

 

 

 

 

 

 

Spinpoint M8 Product Manual REV 2.3

40

Page 45 Page 47
Image 46
Page 45 Page 47
Contents M8 Product Manual Page Table of Contents Servo System Read and Write Operations Read Fpdma Queued 60h Read Log Extended 2Fh Read Long 22h Table of Tables User Definition ScopeManual Organization Sata ReferenceDescription IntroductionKey Features Standards and Regulations Hardware RequirementsSpecifications SpecificationsSpecification Summary Spindle speed RPM RPM ClassPhysical Specifications Physical SpecificationsLogical Configurations Physical dimensionsPerformance Specifications Power Requirements Power consumptionPower consumption RatedEnvironmental Specifications Environmental Specifications15.0 Reliability Specifications Installation Space RequirementsUnpacking Instructions MountingMounting Dimensions OrientationClearance Mounting-Screw ClearanceVentilation Cable ConnectorsSata Connectivity Serial ATA Power ManagementHDD Power, Sata Interface, and Factory Jumper Connector Pin Locations on the Drive Pcba Drive Installation DC Power Connector and SATA-Bus Interface Cable ConnectionsDC Spindle Motor Assembly Head / Disk Assembly HDABase Casting Assembly Disk Drive OperationCoverAssembly Voice Coil Motor and Actuator Latch Assemblies Disk Stack AssemblyHead Stack Assembly Air Filtration SystemDrive Electronics Digital Signal Process and Interface ControllerDisk Controller DDR Host Interface Control Block Buffer Control BlockDisk Ldpc Control Block Disk Control BlockFrequency Synthesizer Time Base Generator Power ManagementRead/Write IC Automatic Gain ControlAnalog Anti-Aliasing Low Pass Filter Analog to Digital Converter ADC and FIRRead and Write Operations Servo SystemRead Channel Write Channel Firmware FeaturesRead Caching Write Caching Multi-burst ECC Correction Defect ManagementAutomatic Defect Allocation SmartSata II Interface Sata Terminology Spinpoint M8 Product Manual REV Physical Interface Signal Summary Signal DescriptionsControl Block Register Descriptions When read When written2 I/O Register Address RegistersError Register Ex F1h Command Block Register DescriptionsFeatures Register and Feature Extended Register Ex F1h Device Control Register ex F6hCommand Register Ex F7h Device Register Ex F6hStatus Register Ex F7h Staggered Spin-up Disable Control Sata II Feature SETDevice Activity Signal Auto-Activate in DMA Setup FISPhy. Event Counters Software Settings Preservation Sata Power ManagementCommand Table ATA Command DescriptionsCommand Code Parameters Command Descriptions Check Power Mode E5hCommand Device Configuration Overlay B1hDevice Configuration Overlay Feature Register Values Download Micro Code 92hDevice Configuration Identify data structure Word Content Flush Cache E7h, EAh extended Execute Device Diagnostics 90hDiagnostic Codes Format Track 50hContent Description Identify Device information=the fields reported in word 88 are valid EXT =Media Card Pass Through command feature set supported Word Content Description WWNIdle E3h Automatic Standby Timer PeriodsIdle Immediate E1h Read Buffer E4h Initialize Device Parameters 91hNOP 00h Read DMA C8h, 25h extendedRead Log Extended 2Fh Read Multiple Command C4h, 29h extendedRead Long 22h Read Sectors 20h, 24h extended Read Native Max Address F8h, 27h extendedRead Verify Sectors 40h, 41h extended Security Erase Prepare F3h Security Disable Password F6hRecalibrate 10h Security Erase Unit F4hSecurity Set Password data content Security Set Password F1hSecurity Erase Unit Password Word Content Security Freeze Lock F5hSecurity Unlock F2h Set Features EFhIdentifier Level Command result Seek 7xh11 Set Features Register Definitions 12 Transfer Mode ValuesSet Max Address F9h, 37h extended Set Multiple Mode C6h13 Set Max Feature Register Values Sleep E6hSmart enable/disable attribute auto-save D2h 14 Smart Feature Registers ValuesSmart disable operations D9h Smart B0hSmart enable operations D8h Smart execute off-line immediate D4hSmart read data D0h 15 Device Smart Data StructureData Structure Revision Number Bit Name Description 16 Smart Attribute Status Flags17 Smart Attribute Data List 18 Off-line Data Collection Status ValuesSelf-test execution status byte 19 Self-test Execution Status ValuesSmart return status DAh Smart read log sector D5hSmart write log sector D6h Write DMA CAh, 35h extended Standby Immediate E0hWrite Buffer E8h Write Fpdma Queued 61hWrite Long 32h Write Multiple Command C5h, 39h extendedWrite Sectors 30h, 34h extended Spinpoint M8 Product Manual REV Maintenance Precautions MaintenanceGeneral Information HDD handling guide -Please handle HDD by side surfaces Service and Repair HDD handling guide Prevent Shocks
Top Page Image Contents