ISO 20794-4:2020
p
ISO 20794-4:2020
72870

Abstract  Preview

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 

  •  :  Published
     : 2020-02
  •  : 1
     : 56
  •  : ISO/TC 22/SC 31 Data communication
  •  :
    43.040.15 Car informatics. On board computer systems

Buy this standard

en
Format Language
std 1 178 PDF
std 2 178 Paper
  • CHF178

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information.