
36 The Essential Guide to Serial ATA and SATA Express
Architectural model – ATA Architecture Model (AAM) defines host and device responsibilities
and provides a foundation for compatibility across all Standards.
Command Sets – ATA Command Set (ACS) defines the register delivered commands used by
devices implementing the Standard.
Transport/Physical Interface – ATA Serial Transport (AST) defines the connectors and cables for
physical interconnection between host and storage device; the electrical and logical characteris-
tics of the interconnecting signals; and the protocols for the transporting commands, data, and
status over the inter ...