Process management for avionics - Electronics design - Part 1: Electrical signal properties, naming conventions and interface control document (ICD)

IEC TR 63238-1:2019 provides information and a template to create an interface control document (ICD) for any project which includes electronic assemblies, such as electronic circuit card assemblies (CCAs) or electronic devices, connected together. This document proposes electrical signal naming conventions when interfacing electronic assemblies, and an example containing seven signal naming conventions is included. This document supports original equipment manufacturers (OEMs) in the preparation and maintenance of their electronic assemblies interfaces and integration specifications to avoid misunderstanding of signals which can cause unnecessary design and/or integration errors, and testing complications.

General Information

Status
Published
Publication Date
29-Jul-2019
Current Stage
PPUB - Publication issued
Completion Date
30-Jul-2019
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IEC TR 63238-1:2019 - Process management for avionics - Electronics design - Part 1: Electrical signal properties, naming conventions and interface control document (ICD)
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IEC TR 63238-1
Edition 1.0 2019-07
TECHNICAL
REPORT
colour
inside
Process management for avionics – Electronics design –
Part 1: Electrical signal properties, naming conventions and interface control
document (ICD)
IEC TR 63238-1:2019-07(en)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC TR 63238-1
Edition 1.0 2019-07
TECHNICAL
REPORT
colour
inside
Process management for avionics – Electronics design –
Part 1: Electrical signal properties, naming conventions and interface control
document (ICD)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 03.100.50; 31.020; 49.060 ISBN 978-2-8322-7187-2

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC TR 63238-1:2019  IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 3

1 Scope .............................................................................................................................. 5

2 Normative references ...................................................................................................... 5

3 Terms, definitions and abbreviated terms ........................................................................ 5

Terms and definitions .............................................................................................. 5

Abbreviated terms ................................................................................................... 6

4 ICD description ................................................................................................................ 6

General ................................................................................................................... 6

Electrical interface .................................................................................................. 7

ICD specification format .......................................................................................... 7

General ........................................................................................................... 7

Format of the ICD specification ........................................................................ 7

ICD content ..................................................................................................... 8

Annex A (informative) Example of an ICD ........................................................................... 13

Bibliography .......................................................................................................................... 15

Figure 1 – Example of an electronic schematic including an electrical interface ...................... 7

Figure 2 – Signal “Sig1”: Sinusoidal wave ............................................................................. 10

Figure 3 – Signal “Sig2”: Rectangular wave .......................................................................... 11

Figure 4 – Signal “Sig3”: Symmetrical triangular wave .......................................................... 11

Figure 5 – Signal “Sig4”: Trapezoidal cut wave ..................................................................... 11

Figure 6 – Signal “Sig5”: Upper half sine wave ...................................................................... 11

Figure 7 – Signal “Sig6”: Triangular align right ...................................................................... 11

Figure A.1 – Example of an ICD ............................................................................................ 13

Table 1 – Examples for sources and loads .............................................................................. 7

Table 2 – Typical ICD specification table header ..................................................................... 8

Table 3 – Typical ICD file ........................................................................................................ 8

Table 4 – Source or load type “L1” ........................................................................................ 10

Table 5 – Shape of signal “L2” .............................................................................................. 10

Table 6 – Columns for describing the characteristics of each signal shape ........................... 12

Table A.1 – Example for ICD data ......................................................................................... 14

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IEC TR 63238-1:2019  IEC 2019 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PROCESS MANAGEMENT FOR AVIONICS –
ELECTRONICS DESIGN –
Part 1: Electrical signal properties, naming conventions and interface
control document (ICD)
FOREWORD

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all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

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The main task of IEC technical committees is to prepare International Standards. However, a

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data of a different kind from that which is normally published as an International Standard, for

example "state of the art".
IEC TR 63238-1, which is a Technical Report, has been prepared by IEC technical
committee 107: Process management for avionics.
The text of this Technical Report is based on the following documents:
Draft TR Report on voting
107/351/DTR 107/356/RVDTR

Full information on the voting for the approval of this Technical Report can be found in the

report on voting indicated in the above table.
---------------------- Page: 5 ----------------------
– 4 – IEC TR 63238-1:2019  IEC 2019

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 63238 series, published under the general title Process

management for avionics – Electronics design, can be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
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colour printer.
---------------------- Page: 6 ----------------------
IEC TR 63238-1:2019  IEC 2019 – 5 –
PROCESS MANAGEMENT FOR AVIONICS –
ELECTRONICS DESIGN –
Part 1: Electrical signal properties, naming conventions and interface
control document (ICD)
1 Scope

This part of IEC 63238 provides information and a template to create an interface control

document (ICD) for any project which includes electronic assemblies, such as electronic

circuit card assemblies (CCAs) or electronic devices, connected together. This document

proposes electrical signal naming conventions when interfacing electronic assemblies, and an

example containing seven signal naming conventions is included. This document supports

original equipment manufacturers (OEMs) in the preparation and maintenance of their

electronic assemblies interfaces and integration specifications to avoid misunderstanding of

signals which can cause unnecessary design and/or integration errors, and testing

complications.
2 Normative references
There are no normative references in this document.
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
interface control document
ICD

document which defines for each electronic signal its electrical properties value and naming

Note 1 to entry Typical electronic signal examples inc
...

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