Alcance
This document specifies the CXPI data link layer and the CXPI physical layer.The DLL is based on:— priority-based CXPI network access;— non-destructive content-based arbitration;— broadcast frame transfer and acceptance filtering; and— node related error detection and error signalling.The CXPI physical layer (PHY) requirements comprise of:— physical signalling (PS) sub-layer, which specifies the requirements of the clock generation function, the encoding and decoding of CXPI frames, and bit-wise collision resolution logic;— physical media attachment (PMA) sub-layer, which specifies the requirements of the signal shaping waveform logic;— physical media dependent (PMD) sub-layer, which specifies the requirements of the CXPI network termination, electrostatic discharge protection, etc., and device connector requirements; and— physical media (PM), which specifies the requirements of the CXPI network cable/wiring harness.