ISO 21806-8:2020

Road vehicles — Media Oriented Systems Transport (MOST) — Part 8: 150-Mbit/s optical physical layer

This document specifies the 150-Mbit/s optical physical layer for MOST (MOST150 oPHY), a synchronous time-division-multiplexing network. This document specifies the applicable constraints and defines interfaces and parameters, suitable for the development of products based on MOST150 oPHY. Such products include fibre optical links and connectors, fibre optic receivers, fibre optic transmitters, electrical to optical converters, and optical to electrical converters. This document also establishes basic measurement techniques and actual parameter values for MOST150 oPHY.

Véhicules routiers — Système de transport axé sur les médias — Partie 8: Couche optique physique à150-Mbit/s

General Information

• Status: Published
• Publication Date: 25-Oct-2020
• ICS: 43.040.15 - Car informatics. On board computer systems
• Technical Committee: ISO/TC 22/SC 31 - Data communication
• Drafting Committee: ISO/TC 22/SC 31/WG 3 - In-vehicle networks
• Current Stage: 6060 - International Standard published
• Start Date: 26-Oct-2020
• Due Date: 07-Dec-2020
• Completion Date: 26-Oct-2020

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 21806-8
First edition
2020-10
Road vehicles — Media Oriented
Systems Transport (MOST) —
Part 8:
150-Mbit/s optical physical layer
Véhicules routiers — Système de transport axé sur les médias —
Partie 8: Couche optique physique à150-Mbit/s
Reference number
©
ISO 2020
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
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Published in Switzerland
ii © ISO 2020 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms . 2
4.1 Symbols . 2
4.2 Abbreviated terms . 3
5 Conventions . 4
6 Physical layer service interface to OSI data link layer . 4
6.1 Overview . 4
6.2 Data type definitions . 4
6.3 Event indications and action requests . 4
6.3.1 P_EVENT.INDICATE . 4
6.3.2 P_ACTION.REQUEST . 4
6.4 Parameters . 4
6.4.1 PHY_Event . 4
6.4.2 PHY_Request . . 5
7 Basic physical layer requirements . 5
7.1 Logic terminology . 5
7.1.1 Single-ended low-voltage digital signals . 5
7.1.2 Differential LVDS signals . 6
7.2 Specification points (SPs) . 6
7.3 Phase variation . 7
7.3.1 General. 7
7.3.2 Wander . 7
7.3.3 Jitter . 7
7.3.4 Clock recovery and reference clock . 8
7.3.5 Link quality . 9
7.3.6 MOST network quality .10
8 MOST150 oPHY requirements .14
8.1 General MOST network parameters .14
8.1.1 MOST network coding .14
8.1.2 Specification Point details.15
8.2 Models and measurement methods .16
8.2.1 Golden PLL .16
8.2.2 Jitter filter .17
8.2.3 Retimed bypass mode and stress pattern .18
8.2.4 Optical signal level detection .18
8.2.5 Region of optical signal level detection .18
9 Link specifications .19
9.1 General .19
9.2 Specification Point 1 (SP1) .19
9.3 Specification Point 2 (SP2) .21
9.3.1 Link quality parameters .21
9.3.2 Optical overshoot and undershoot .23
9.4 Specification Point 3 (SP3) .26
9.5 Specification Point 4 (SP4) .27
10 Power-on and power-off .28
10.1 Frequency reference and power supply .28
10.2 Power supply monitoring circuitry .29
10.3 Optical and electrical signal power state .29
10.3.1 General.29
10.3.2 EOC requirements .29
10.3.3 EOC power-on and power-off sequence .31
10.3.4 OEC requirements .32
10.3.5 OEC power-on and power-off sequence .34
11 MOST network requirements .35
11.1 SP4 receiver tolerance .35
11.2 TimingMaster delay tolerance .36
11.3 Optical fibre link length requirement .36
11.4 Environmental requirements and considerations .36
12 Electrical interfaces .36
12.1 LVDS .36
12.2 Bit rate and frequency tolerance .37
13 FOT packaging .37
13.1 SMD package .37
13.1.1 SMD FOT package reference drawings .37
13.1.2 SMD FOT pinout.37
13.1.3 SMD OEC signal definitions .38
13.1.4 SMD EOC signal definitions .39
13.2 Through-hole mount (THM) package .39
13.2.1 THM FOT package reference drawings .39
13.2.2 THM FOT pinout .
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