本标准规定了使用自动直接存储器的主机系统之间的AT连接接口 访问（ADMA）和存储设备。它为系统制造商提供了一个通用的链路层接口， 系统集成商和软件供应商。AT Attachment Interface的应用程序环境是处理器机柜中包含PCI总线和存储设备的任何主机系统。本标准与AT附件与数据包接口6标准（ATA/ATAPI-6）、ANSI INCITS 361-2002保持高度兼容性，并且在指定链路层寄存器定义和使用信息的同时，不要求对当前安装的设备进行更改。

This standard specifies the AT Attachment Interface between host systems using Automatic Direct Memory Access (ADMA) and storage devices. It provides a common link layer interface for systems manufacturers, system integrators, and software suppliers.The application environment for the AT Attachment Interface is any host system that has a PCI bus and storage devices contained within the processor enclosure.This standard maintains a high degree of compatibility with the AT Attachment with Packet Interface 6 standard (ATA/ATAPI-6), ANSI INCITS 361-2002, and while specifying link-layer register definitions and usage information, is not intended to require changes to presently installed devices.