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UniPro protocol stack
In mobile-telephone technology, the UniPro protocol stack〔(MIPI Alliance Specification for Unified Protocol (UniProSM) v1.10.01 ), requires an account at the MIPI website〕 follows the architecture of the classical OSI Reference Model. In UniPro, the OSI Physical Layer is split into two sublayers: Layer 1 (the actual physical layer) and Layer 1.5 (the PHY Adapter layer) which abstracts from differences between alternative Layer 1 technologies. The actual physical layer is a separate specification as the various PHY options are reused〔(Overview of MIPI specifications ), D-PHY is used in the DSI, CSI, and UniPro specifications, M-PHY is used in the UniPro, DigRFv4 and LLI specifications〕 in other MIPI Alliance specifications.
The UniPro specification itself covers Layers 1.5, 2, 3, 4 and the DME (Device Management Entity). The Application Layer (LA) is out of scope because different uses of UniPro will require different LA protocols. The Physical Layer (L1) is covered in separate MIPI specifications in order to allow the PHY to be reused by other (less generic) protocols if needed.
OSI Layers 5 (Session) and 6 (Presentation) are, where applicable, counted as part of the Application Layer.
==Physical Layer (L1)==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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