IEC 62343-4-1:2016

IEC 62343-4-1 ®
Edition 1.0 2016-03
INTERNATIONAL
STANDARD
Dynamic modules –
Part 4-1: Software and hardware interface – 1 x 9 wavelength selective switch
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IEC 62343-4-1 ®
Edition 1.0 2016-03
INTERNATIONAL
STANDARD
Dynamic modules –
Part 4-1: Software and hardware interface – 1 x 9 wavelength selective switch

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.180.20 ISBN 978-2-8322-3199-9

– 2 – IEC 62343-4-1:2016 © IEC 2016
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references. 6
3 Terms, definitions and abbreviations . 6
3.1 Terms and definitions . 6
3.2 Abbreviations . 6
4 Basic configuration of WSS interface . 7
5 Software interface . 8
6 Hardware interface – Electrical connector . 11
Annex A (informative) Hardware interface details . 12
Annex B (informative) DPRAM memory map details and timing charts . 14
Bibliography . 30

Figure 1 – Basic configuration of WSS interface . 7
Figure B.1 – DPRAM READ CYCLE timing . 25
Figure B.2 – DPRAM WRITE CYCLE timing . 26
Figure B.3 – POWER ON timing . 26
Figure B.4 – START timing. 27
Figure B.5 – MASTER RESET timing . 27
Figure B.6 – SOFT RESET timing . 28
Figure B.7 – DPRAM BUSY timing . 28
Figure B.8 – ALARM timing . 29

Table 1 – Software interface . 9
Table 2 – DPRAM memory map . 10
Table A.1 – Connector form . 12
Table A.2 – Pin assignment . 12
Table A.3 – Supply voltages and currents . 13
Table A.4 – Low voltage TTL thresholds . 13
Table A.5 – Power consumption . 13
Table B.1 – DPRAM memory map specification A . 14
Table B.2 – DPRAM memory map specification B . 15
Table B.3 – Signal time specification . 24

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DYNAMIC MODULES –
Part 4-1: Software and hardware interface –
1 x 9 wavelength selective switch

FOREWORD
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International Standard IEC 62343-4-1 has been prepared by subcommittee SC86C: Fibre
optic systems and active devices, of IEC technical committee 86: Fibre optics.
The text of this standard is based on the following documents:
CDV Report on voting
86C/1304/CDV 86C/1346/RVC
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
A list of all parts in the IEC 62343 series, published under the general title Dynamic modules,
can be found on the IEC website.

– 4 – IEC 62343-4-1:2016 © IEC 2016
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

INTRODUCTION
A wavelength selective switch (WSS) is a dynamic module, which is mainly used in a
reconfigurable optical add drop multiplexer (ROADM) system to switch all wavelength signals
to their respective required output port in dense wavelength division multiplexing (DWDM)
networks. The WSS module has one input port and a plurality of output ports (i.e. 1 x N WSS)
and can be used reversely, such as N input ports and one output port, depending on its
application. It is electrically controlled with software, which directs each wavelength signal
among an input DWDM signal from one input port to the required output port for each
wavelength signal.
– 6 – IEC 62343-4-1:2016 © IEC 2016
DYNAMIC MODULES –
Part 4-1: Software and hardware interface –
1 x 9 wavelength selective switch

1 Scope
This part of IEC 62343 describes and provides specifications for a software and hardware
interface for the 1 x 9 wavelength selective switch.
These switches can be controlled by resident firmware with this interface. This standard
addresses the configuration and function to control a WSS. This interface is intended to
enable a user or host to retrieve the switch status and/or adjust relevant switch and
attenuation settings.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and
are indispensable for its application. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60050-731, International Electrotechnical Vocabulary – Chapter 731: Optical fibre
communication (available at http://www.electropedia.org)
IEC 62343, Dynamic modules - General and guidance
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-731 and
IEC 62343, as well as the following apply.
3.1.1
wavelength selective switch
WSS
dynamic module with one or more input ports and one or more output ports, which is mainly
used in a reconfigurable optical add drop multiplexer (ROADM) system to switch each
wavelength signal on each input port independently to its required output port in DWDM
networks
Note 1 to entry: It is electrically controlled with software.
Note 2 to entry: It can be used inverted, exchanging input and output ports.
Note 3 to entry: Each wavelength signal can be independently attenuated.
3.2 Abbreviations
For the purposes of this document, the following abbreviations appl
...