ulpi接口设计指南

The purpose of this document is to serve as a design and verification companion for anybody designing a system using a UTMI+ Low Pin Interface (ULPI). The intention here is to present hardware design guidelines and provide supplemental explanations of the ULPI protocol. While some sections of the ULPI specification are repeated for convenient reference, this document is a supplement to the ULPI Specification so that both documents can be used to enable successful product design. The most common use of the ULPI interface is in systems that connect a Hi-Speed USB 2.0 transceiver to a Link.