ANSI/INCITS 452-2009
This standard specifies the AT Attachment command set used to communicate between host systemsand storage devices. This provides a common command set for systems manufacturers, systemintegrators, software suppliers, and suppliers of storage devices. The AT Attachment command setincludes the PACKET feature set implemented by devices commonly known as ATAPI devices. Thisstandard maintains a high degree of compatibility with the AT Attachment Interface with Packet Interface- 7 (ATA/ATAPI-7) volume 1 (see ANSI INCITS 397-2004).