This standard specifies the AT Attachment Interface between host systems and storage devices. It provides a common attachment interface for systems manufacturers, system integrators, software suppliers, and suppliers of intelligent storage devices.
This standard defines the connectors and cables for physical interconnection between host and storage device, as well as the electrical and logical characteristics of the interconnecting signals. It also defines the operational registers within the storage device, and the commands and protocols for the operation of the storage device.
This standard maintains a high degree of compatibility with INCITS 340-2000 (ATA/ATAPI-5) and while providing additional functions, is not intended to require changes to presently installed devices or existing software.
