本标准描述了智能外围接口（IPI）系列标准中磁盘驱动器部分的逻辑2级（设备级）接口。本标准的目的是促进设备级接口的开发和利用，该接口允许磁盘从机外围设备与控制器互连。

This standard describes a Logical Level 2 (device level) Interface for the disk drives portion of the Intelligent Peripheral Interface (IPI) set of standards. The purpose of this standard is to facilitate the development and utilization of a device level interface which permits the interconnection of disk slave peripherals to a controller.