ANSI INCITS 340 : 2000

Foreword
Introduction
1 Scope
2 Normative references
   2.1 Approved references
   2.2 References under development
   2.3 Other references
3 Definitions, abbreviations, and conventions
   3.1 Definitions and abbreviations
   3.2 Conventions
4 Interface physical and electrical requirements
   4.1 Cable configuration
   4.2 Electrical characteristics
5 Interface signal assignments and descriptions
   5.1 Signal summary
   5.2 Signal descriptions
6 General operational requirements
   6.1 Command delivery
   6.2 Register delivered data transfer command sector addressing
   6.3 Interrupts
   6.4 General feature set
   6.5 Multiword DMA
   6.6 Ultra DMA feature set
   6.7 Host determination of cable type by detecting CBLID
   6.8 PACKET Command feature set
   6.9 Overlapped feature set
   6.10 Queued feature set
   6.11 Power Management feature set
   6.12 Advanced Power Management feature set
   6.13 Security Mode feature set
   6.14 Self-monitoring, analysis, and reporting technology
        feature set
   6.15 Host Protected Area feature set
   6.16 CFA feature set
   6.17 Removable Media Status Notification and Removable Media
        feature sets
   6.18 Power-Up In Standby feature set
7 Interface register definitions and descriptions
   7.1 Device addressing considerations
   7.2 I/O register descriptions
   7.3 Alternate Status register
   7.4 Command register
   7.5 Cylinder High register
   7.6 Cylinder Low register
   7.7 Data port
   7.8 Data register
   7.9 Device Control register
   7.10 Device/Head register
   7.11 Error register
   7.12 Features register
   7.13 Sector Count register
   7.14 Sector Number register
   7.15 Status register
8 Command descriptions
   8.1 CFA ERASE SECTORS
   8.2 CFA REQUEST EXTENDED ERROR CODE
   8.3 CFA TRANSLATE SECTOR
   8.4 CFA WRITE MULTIPLE WITHOUT ERASE
   8.5 CFA WRITE SECTORS WITHOUT ERASE
   8.6 CHECK POWER MODE
   8.7 DEVICE RESET
   8.8 DOWNLOAD MICROCODE
   8.9 EXECUTE DEVICE DIAGNOSTIC
   8.10 FLUSH CACHE
   8.11 GET MEDIA STATUS
   8.12 IDENTIFY DEVICE
   8.13 IDENTIFY PACKET DEVICE
   8.14 IDLE
   8.15 IDLE IMMEDIATE
   8.16 INITIALIZE DEVICE PARAMETERS
   8.17 MEDIA EJECT
   8.18 MEDIA LOCK
   8.19 MEDIA UNLOCK
   8.20 NOP
   8.21 PACKET
   8.22 READ BUFFER
   8.23 READ DMA
   8.24 READ DMA QUEUED
   8.25 READ MULTIPLE
   8.26 READ NATIVE MAX ADDRESS
   8.27 READ SECTOR(S)
   8.28 READ VERIFY SECTOR(S)
   8.29 SECURITY DISABLE PASSWORD
   8.30 SECURITY ERASE PREPARE
   8.31 SECURITY ERASE UNIT
   8.32 SECURITY FREEZE LOCK
   8.33 SECURITY SET PASSWORD
   8.34 SECURITY UNLOCK
   8.35 SEEK
   8.36 SERVICE
   8.37 SET FEATURES
   8.38 SET MAX
   8.39 SET MULTIPLE MODE
   8.40 SLEEP
   8.41 SMART
   8.42 STANDBY
   8.43 STANDBY IMMEDIATE
   8.44 WRITE BUFFER
   8.45 WRITE DMA
   8.46 WRITE DMA QUEUED
   8.47 WRITE MULTIPLE
   8.48 WRITE SECTOR(S)
9 Protocol
   9.1 Power-on and hardware reset protocol
   9.2 Software reset protocol
   9.3 Bus idle protocol
   9.4 Non-data command protocol
   9.5 PIO data-in command protocol
   9.6 PIO data-out command protocol
   9.7 DMA command protocol
   9.8 PACKET command protocol
   9.9 READ/WRITE DMA QUEUED command protocol
   9.10 EXECUTE DEVICE DIAGNOSTIC command protocol
   9.11 DEVICE RESET command protocol
   9.12 Signature and persistence
   9.13 Ultra DMA data-in commands
   9.14 Ultra DMA data-out commands
   9.15 Ultra DMA CRC rules
   9.16 Single device configurations
10 Timing
   10.1 Deskewing
   10.2 Transfer timing
Tables
Figures
Annexes
A - Connectors and cable assemblies
B - Device determination of cable type
C - Identify device data for devices with more than 1024
    logical cylinders
D - Signal integrity and UDMA implementation guide
E - Bibliography
F - ATA command set summary

Describes the AT Attachment Interface between host systems and storage devices. Also provides a common attachment interface for systems manufacturers, system integrators, software suppliers, and suppliers of intelligent storage devices.