This document is a recommended practice and intended to provide a minimum set of implementation requirements of the Clock Extension Peripheral Interface (CXPI) protocol. This document specifies the parameter requirements of the CXPI protocol. The CXPI protocol provides some selected features of the Controller Area Network (CAN) protocol implemented on a UART-based data link for mainly HMI (Human Machine Interface) of road vehicles electric systems.
The CXPI protocol is a low speed low cost communication protocol that is capable of reducing wire counts to simple devices like switches and sensors. This document defines an implementation requirements and guidelines of the CXPI protocol.