Set Features Register Definitions | Samsung M9T instruction

	Table 8-11 Set Features Register Definitions

Code	Description
02h	Enable Write Cache

03h	Set transfer mode based on value in Sector Count register

06h	Enable Power-Up in Standby Mode

07h	Power-Up in Standby feature set device spin up

10h	Enable use of SATA features
	SC=02: DMA Setup FIS Auto Activate automation
	SC=03: Device-initiated interface power state transition
	SC=06: Software Settings Preservation

44h	Obsolete (Set VU ECC length)

55h	Disable read look-ahead feature

82h	Disable Write Cache

86h	Disable Power-Up in Standby Mode

90h	Disable use of SATA features
	SC=02: DMA Setup FIS Auto Activate automation
	SC=03: Device-initiated interface power state transition
	SC=06: Software Settings Preservation

AAh	Enable read look-ahead feature

BBh	Obsolete (Set 4-byte ECC length)

D2h-DFh	VU Features

F0h-FFh	VU Features

When the drive receives this command, it checks the contents of the Feature register, clears BSY, and generates an interrupt. If the value in the Feature register is not supported or is invalid, the drive posts an Aborted Command error.

A host can choose the transfer mechanism by Set Transfer Mode and specifying a value in the Sector Count register in feature 03. The upper 5 bits define the type of transfer, and the low order 3 bits encode the mode value. Refer to the following table for details.

Table 8-12 Transfer Mode Values

Mode	Bits(7:3)	Bits(2:0)
PIO default mode	00000	000
PIO default mode, disable IORDY	00000	001
PIO flow control transfer mode	00001	mode
Multiword DMA mode	00100	mode
Ultra DMA mode	01000	mode

Mode = transfer mode number

Spinpoint M9T Product Manual REV 1.0

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Image 66

Samsung M9T manual Set Features Register Definitions, Transfer Mode Values

Contents

M9T Product Manual Page Table of Contents Iii Read Fpdma Queued 60h Read Log Extended 2Fh Read Long 22h Table of Tables Scope User DefinitionManual Organization Sata Reference Description Introduction Key Features Standards and Regulations Hardware Requirements Specifications Specification Summary Physical Specifications Logical Configurations Performance Specifications Power Requirements Power consumptionPower consumption Rated Linear Shock 1/2 sine pulse Environmental SpecificationsEnvironmental Specifications Rotational Shock Reliability Specifications Installation Space Requirements Unpacking Instructions Mounting Mounting Dimensions Orientation Cable Connectors VentilationSata Connectivity Computer mainboard or Serial ATA host adapter Power Management SATA-Bus Interface Connector HDD Power, Sata Interface, and Factory Jumper Connector Drive Installation DC Power Connector and SATA-Bus Interface Cable Connections 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 Digital Signal Process and Interface Controller Drive ElectronicsDisk Controller DDR Host Interface Control Block Buffer Control Block Disk Control Block Disk Ldpc Control BlockFrequency Synthesizer Time Base Generator Power ManagementRead/Write IC Automatic Gain Control Analog Anti-Aliasing Low Pass Filter Analog to Digital Converter ADC and FIR Servo System Read and Write OperationsRead Channel Firmware Features Write ChannelRead Caching Write Caching Smart Defect ManagementAutomatic Defect Allocation 6 APM Sata II Interface Sata Terminology Spinpoint M9T Product Manual REV Physical Interface Signal Summary Signal Descriptions Control Block Register Descriptions When read When written2 I/O Register Address Registers Command Block Register Descriptions Command Register Ex F7h Device Register Ex F6h Status Register Ex F7h Staggered Spin-up Disable Control Sata II Feature SETDevice Activity Signal Auto-Activate in DMA Setup FIS Phy Event Counters Software Settings Preservation Sata Power Management ATA Command Descriptions Command TableCommand Code Parameters Smart Device Configuration Overlay B1h Command DescriptionsCheck Power Mode E5h Download Micro Code 92h Device Configuration Identify data structure Word Content Flush Cache E7h, EAh extended Execute Device Diagnostics 90hDiagnostic Codes Format Track 50h Content Description Identify Device information =the fields reported in word 88 are valid EXT =Media Card Pass Through command feature set supported Word Content Description WWN Automatic Standby Timer Periods Idle E3hIdle Immediate E1h Read Buffer E4h Initialize Device Parameters 91hNOP 00h Read DMA C8h, 25h extended Read Multiple Command C4h, 29h extended Read Log Extended 2FhRead Long 22h Read Native Max Address F8h, 27h extended Read Sectors 20h, 24h extendedRead Verify Sectors 40h, 41h extended Security Erase Prepare F3h Security Disable Password F6hRecalibrate 10h Security Erase Unit F4h Security Set Password data content Security Set Password F1hSecurity Erase Unit Password Word Content Security Freeze Lock F5h Set Features EFh Security Unlock F2hSeek 7xh 11 Set Features Register Definitions 12 Transfer Mode Values Set Max Address F9h, 37h extended Set Multiple Mode C6h13 Set Max Feature Register Values Sleep E6h Smart enable/disable attribute auto-save D2h 14 Smart Feature Registers ValuesSmart disable operations D9h Smart B0h Smart enable operations D8h Smart execute off-line immediate D4h Smart read data D0h 15 Device Smart Data Structure Byte Bit Name Description 16 Smart Attribute Status Flags 17 Smart Attribute Data List 18 Off-line Data Collection Status Values Self-test execution status byte 19 Self-test Execution Status Values Smart read log sector D5h Smart return status DAhSmart write log sector D6h Write DMA CAh, 35h extended Standby Immediate E0hWrite Buffer E8h Write Fpdma Queued 61h Write Multiple Command C5h, 39h extended Write Sectors 30h, 34h extended Spinpoint M9T Product Manual REV Maintenance Maintenance PrecautionsGeneral Information HDD handling guide -Please handle HDD by side surfaces Service and Repair HDD handling guide Prevent Shocks