ANSI INCITS 317 : 1998 : R2003

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 I/O cable
   4.3 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 General feature set
   6.4 Ultra DMA feature set
   6.5 PACKET Command feature set
   6.6 Overlapped feature set
   6.7 Queued feature set
   6.8 Power Management feature set
   6.9 Advanced Power Management feature set
   6.10 Security Mode feature set
   6.11 Self-monitoring, analysis, and reporting technology
        feature set
   6.12 Host Protected Area feature set
   6.13 CFA feature set
   6.14 Removable Media Status Notification and Removable Media
        feature sets
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 register
   7.8 Data port
   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 ADDRESS
   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 Signature and persistence
   9.2 Power on and hardware resets
   9.3 Software reset
   9.4 DEVICE RESET protocol
   9.5 EXECUTE DEVICE DIAGNOSTIC protocol
   9.6 Device selection protocol
   9.7 PIO data in command protocol
   9.8 PIO data out command protocol
   9.9 Non-data command protocol
   9.10 DMA command protocol
   9.11 PACKET command protocol
   9.12 READ/WRITE DMA QUEUED command protocol
   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
Annexes
Annex A (normative) Connectors
Annex B (informative) Identify device data for devices with more
        than 1024 logical cylinders
Annex C (informative) Signal integrity
Annex D (informative) Bibliography
Annex E (informative) ATA command set summary
Annex F (informative) Command packet format example

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