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ISO20794-3-2020
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Road vehicles — Clock extension peripheral interface (CXPI) — Part 3: Transport and network layer
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©
ISO 2020
Road vehicles — Clock extension
peripheral interface (CXPI) —
Part 3:
Transport and network layer
Véhicules routiers — Interface du périphérique d'extension d'horloge
(CXPI) —
Partie 3: Transport et couche réseau
INTERNATIONAL
STANDARD
ISO
20794-3
First edition
2020-02
Reference number
ISO 20794-3:2020(E)
Copyrighted material licensed to University of Southern California by Clarivate Analytics (US) LLC, subscriptions.techstreet.com, downloaded on 2020-03-01 07:45:27 +0000 by University of Southern California User.
No further reproduction or distribution is permitted.
ISO 20794-3:2020(E)
ii © ISO 2020 – All rights reserved
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
CP 401 • Ch. de Blandonnet 8
Phone: +41 22 749 01 11
Website: www.iso.org
Published in Switzerland
Copyrighted material licensed to University of Southern California by Clarivate Analytics (US) LLC, subscriptions.techstreet.com, downloaded on 2020-03-01 07:45:27 +0000 by University of Southern California User.
No further reproduction or distribution is permitted.
ISO 20794-3:2020(E)
Foreword ..........................................................................................................................................................................................................................................v
Introduction ................................................................................................................................................................................................................................vi
1 Scope ................................................................................................................................................................................................................................. 1
2 Normative references ...................................................................................................................................................................................... 1
3 Termsanddefinitions ..................................................................................................................................................................................... 1
4 Symbols and abbreviated terms ........................................................................................................................................................... 2
......................................................................................................................................................................................................... 2
4.2 Abbreviated terms ............................................................................................................................................................................... 2
5 Conventions ............................................................................................................................................................................................................... 3
6 Overview of transport layer and network layer ................................................................................................................... 3
6.1 Properties .................................................................................................................................................................................................... 3
............................................................................................................................................................................................... 3
6.3 Error detection and indication .................................................................................................................................................. 3
7 Service interface parameters (SIP) ................................................................................................................................................... 3
.......................................................................................................................................................................................... 3
......................................................................................................................................................... 4
................................................................................................................................................................ 4
............................................................................................................................................................... 4
............................................................................................................................................................... 4
................................................................................................................................................ 4
....................................................................................................................... 5
................................................................................................................................................... 5
....................................................................................................................................................... 5
................................................................................................. 5
........................................................................................................................................................... 5
............................................................................................................................................................................ 6
8 Transport layer (TL) ......................................................................................................................................................................................... 6
................................................................................................... 6
................................................ 7
............................................................................... 8
8
....... 9
...................10
8.4 TL — Internal operation .............................................................................................................................................................. 11
8.5 TL — T_PDU ........................................................................................................................................................................................... 11
............................................................................................................................................ 11
.............................................................................................................................................. 11
8.6 TL — Function models .................................................................................................................................................................. 12
8.6.1 TL — Transmission logic ....................................................................................................................................... 12
8.6.2 TL — Reception logic ................................................................................................................................................ 13
8.7 TL — Error detection ..................................................................................................................................................................... 14
9 Network layer (NL) ..........................................................................................................................................................................................14
...............................................................................................14
............................................ 15
........................................................................... 16
NULL) ...................................................................................................................................................................................... 16
..17
................. 18
9.4 NL — Internal operation ............................................................................................................................................................. 19
9.5 NL — N_PDU .......................................................................................................................................................................................... 19
© ISO 2020 – All rights reserved iii
Contents Page
Copyrighted material licensed to University of Southern California by Clarivate Analytics (US) LLC, subscriptions.techstreet.com, downloaded on 2020-03-01 07:45:27 +0000 by University of Southern California User.
No further reproduction or distribution is permitted.
ISO 20794-3:2020(E)
........................................................................................................................................... 19
..........................................................................................................................................19
9.6 NL — Function models..................................................................................................................................................................20
9.6.1 NL — Transmission logic ....................................................................................................................................... 20
9.6.2 NL — Reception logic................................................................................................................................................ 20
................................................................................................................................................................ 21
...................................................................................................................................................................21
9.7.2 NL — Timing constraints ......................................................................................................................................21
9.7.3 NL — Timing parameters ...................................................................................................................................... 22
9.8 NL — Error detection ..................................................................................................................................................................... 22
Bibliography .............................................................................................................................................................................................................................23
iv © ISO 2020 – All rights reserved
Copyrighted material licensed to University of Southern California by Clarivate Analytics (US) LLC, subscriptions.techstreet.com, downloaded on 2020-03-01 07:45:27 +0000 by University of Southern California User.
No further reproduction or distribution is permitted.
ISO 20794-3:2020(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
committee has been established has the right to be represented on that committee. International
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
www .iso .org/ directives).
on the ISO list of patent declarations received (see www .iso .org/ patents).
constitute an endorsement.
www .iso .org/
iso/ foreword .html.
Road vehicles
Data communication.
A list of all parts in the ISO 20794 series can be found on the ISO website.
complete listing of these bodies can be found at www .iso .org/ members .html.
© ISO 2020 – All rights reserved v
Copyrighted material licensed to University of Southern California by Clarivate Analytics (US) LLC, subscriptions.techstreet.com, downloaded on 2020-03-01 07:45:27 +0000 by University of Southern California User.
No further reproduction or distribution is permitted.
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