BSIS0 20794-4:2020 BSl Standards Publication Road vehicles Clock extension peripheral interface (CXPI) Part 4: Data link layer and physical layer bsi. BSIS020794-4:2020 BRITISH STANDARD Nationalforeword ThisBritish Standard is theUK implementationofIS020794-4:2020 The UK participation in its preparation was entrusted to Technical Committee AUE/16, Data Communication (Road Vehicles). A list of organizations represented on this committee can be obtained on requestto its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. TheBritishStandardsInstitution2020 PublishedbyBSIStandardsLimited2020 ISBN9780580972263 ICS43.040.15 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Amendments/corrigendaissued sincepublication Date Textaffected BS IS0 20794-4:2020 ISO INTERNATIONAL STANDARD 20794-4 First edition 2020-02 Road vehicles Clock extension peripheral interface (CXPI) - Part 4: Data link layer and physical layer vehicules routiers - Interface du peripherique d'extension d'horloge (CXPI) - Partie 4: Couches de liaison de donnees et physique Reference number IS0 20794-4:2020(E) ISO @IS02020