ISO 20794-4:2020

Published (Edition 1, 2020)

This publication was last reviewed and confirmed in 2025. Therefore this version remains current.

ISO 20794-4:2020

CHF 204

Convert Swiss francs (CHF) to your currency

Abstract

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.

General information

Status
: Published

Publication date
: 2020-02

Stage
: International Standard confirmed [90.93]
Edition
: 1

Number of pages
: 56
Technical Committee :
ISO/TC 22/SC 31

ICS :
43.040.15
RSS updates