SIST EN 63035:2018

SLOVENSKI STANDARD
SIST EN 63035:2018
01-april-2018
MIDI (digitalni vmesnik za glasbene inštrumente), specifikacija 1.0 (skrajšana
izdaja, 2015) (IEC 63035:2017)
MIDI (Musical Instrument Digital Interface) specification 1.0 (Abridged edition, 2015) (IEC
63035:2017)
MIDI (Musikalisches Instrument digitale Schnittstelle) Festlegung 1.0 (Gekürzte
Ausgabe, 2015) (IEC 63035:2017)
Midi (Interface Numerique pour Instruments de Musique) Specification 1.0 (Edition
abrégée, 2015) (IEC 63035:2017)
Ta slovenski standard je istoveten z: EN 63035:2017
ICS:
33.160.30 Avdio sistemi Audio systems
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
SIST EN 63035:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 63035:2018

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SIST EN 63035:2018


EUROPEAN STANDARD EN 63035

NORME EUROPÉENNE

EUROPÄISCHE NORM
September 2017
ICS 33.160.30; 35.040.01; 35.200

English Version
MIDI (Musical Instrument Digital Interface) specification 1.0
(Abridged edition, 2015)
(IEC 63035:2017)
Midi (Interface Numerique pour Instruments de Musique) MIDI (Musikalisches Instrument digitale Schnittstelle)
Specification 1.0 (Edition abrégée, 2015) Festlegung 1.0 (Gekürzte Ausgabe, 2015)
(IEC 63035:2017) (IEC 63035:2017)
This European Standard was approved by CENELEC on 2017-07-24. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 63035:2017 E

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SIST EN 63035:2018
EN 63035:2017
European foreword
The text of document 100/2597/CDV, future edition 1 of IEC 63035, prepared by IEC/TC 100 "Audio,
video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel vote and
approved by CENELEC as EN 63035:2017.

The following dates are fixed:
(dop) 2018-04-24
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2020-07-24
standards conflicting with the
document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 63035:2017 was approved by CENELEC as a European
Standard without any modification.
2

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EN 63035:2017

Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60130-9 -  Connectors for frequencies below 3 MHz -- EN 60130-9 -
Part 9: Circular connectors for radio and
associated sound equipment

3

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SIST EN 63035:2018



IEC 63035

®


Edition 1.0 2017-06




INTERNATIONAL



STANDARD



















MIDI (musical instrument digital interface) specification 1.0

(Abridged Edition, 2015)



























INTERNATIONAL

ELECTROTECHNICAL


COMMISSION





ICS 33.160.30; 35.040.01; 35.200 ISBN 978-2-8322-4355-8



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


® Registered trademark of the International Electrotechnical Commission

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CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 General . 8
4.1 Hardware . 8
4.2 Data format . 10
4.3 Message types . 11
4.3.1 General . 11
4.3.2 Channel messages . 11
4.3.3 System messages. 11
4.4 Data types . 12
4.4.1 General . 12
4.4.2 Status bytes . 12
4.4.3 Data bytes . 12
4.5 Channel modes . 13
4.6 Power-up default conditions . 14
5 MIDI implementation chart instructions . 14
5.1 Introduction . 14
5.2 General . 14
5.3 Function description . 14
5.3.1 Basic Channel . 14
5.3.2 Mode . 14
5.3.3 Note Number . 15
5.3.4 Velocity . 15
5.3.5 Aftertouch . 15
5.3.6 Pitch Bend . 15
5.3.7 Control Change . 15
5.3.8 Program Change . 15
5.3.9 System Exclusive . 15
5.3.10 System Common . 15
5.3.11 System Real Time . 15
5.3.12 Aux. messages . 16
5.3.13 Notes . 16
Annex A (normative) Summary of MIDI messages . 17
Annex B (normative) Control Change messages (Data bytes) . 20
B.1 Control Change messages and Channel Mode messages . 20
B.2 Registered Parameter numbers . 23
Annex C (normative) System Exclusive messages . 25
C.1 System Exclusive messages . 25
C.2 Universal System Exclusive messages . 25
Annex D (normative) MIDI Implementation Chart template . 30
Bibliography . 31

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Figure 1 – MIDI standard hardware . 9
Figure 2 – Types of MIDI bytes . 10
Figure 3 – Types of MIDI messages . 10
Figure 4 – Structure of a single message . 11
Figure 5 – Structure of System Exclusive message . 11

Table 1 – Modes for receiver . 13
Table 2 – Modes for transmitter . 13
Table A.1 – MIDI Specification 1.0 message summary . 17
Table B.1 – Control Changes and Mode Changes (Status bytes 176 to 191) . 20
Table B.2 – Registered Parameter numbers . 24
Table C.1 – System Exclusive messages . 25
Table C.2 – Universal System Exclusive messages . 26
Table D.1 – MIDI Implementation Chart template . 30

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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

MIDI (MUSICAL INSTRUMENT DIGITAL INTERFACE) SPECIFICATION 1.0
(Abridged Edition, 2015)

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 63035 has been prepared by IEC technical committee 100: Audio,
video and multimedia systems and equipment.
The text of this standard is based on the following documents:
CDV Report on voting
100/2597/CDV 100/2858/RVC

Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
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

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IEC 63035:2017  IEC 2017 – 5 –
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

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INTRODUCTION
IEC 63035 contains the same first 8 pages as in the MIDI 1.0 Detailed Specification (the
original core specification text) published by the MIDI Manufacturers Association (MMA).
These are included within this standard as Clauses 1 to 4. This specification was submitted to
the IEC under the auspices of a special agreement between the IEC and the MMA.
The MMA is a non-profit corporation that serves as a support organization and forum for the
advancement and adoption of MIDI technology (along with the Association of Musical
Electronics Industry, or AMEI, in Japan).
The MIDI 1.0 technology dates back to 1983 when the protocol and electrical specification
comprised 8 pages and the majority of the message identifiers were not yet defined. Over the
subsequent years, the MMA and AMEI determined consensus of the worldwide MIDI industry,
and defined numerous additional messages (via Confirmation of Approval documents), as well
as many Recommended Practices for the use of MIDI technology, all the while maintaining
MIDI as "1.0" (meaning that no significant changes were made to the initial specification).
The MMA documentation for MIDI 1.0 now encompasses more than 50 different documents in
print or on the World Wide Web. This standard contains the same first 8 pages as in the
MMA’s MIDI 1.0 Detailed Specification but does not contain all of the subsequent information
developed by MMA/AMEI. Rather, this document contains a complete listing (with basic
description) of all defined MIDI messages to date, with references to the appropriate MMA
documentation. Companies that want to implement MIDI technology are advised to also
consult the MMA documentation that is listed in the Biography.
Although the MIDI 1.0 Detailed Specification includes an electrical connection specification
("MIDI-DIN"), other transports (USB, Firewire, etc.) have also been approved by MMA/AMEI
for use with MIDI Protocol. For details and documentation of approved physical transports,
please contact the MIDI Manufacturers Association.
The term "MIDI" is known all around the world as referring to the technology which is defined
in the MMA/AMEI documents, and so should not be used for any other purpose. Companies
that implement MIDI technology in their products in compliance with MMA specifications may
use the term MIDI to describe their products, but may not use the term to describe any
extensions or enhancements that are not defined by MMA/AMEI. Only MMA/AMEI can define
the messages, transport payloads, and Recommend Practices which are promoted as "MIDI"
so as to prevent any dilution and confusion of the meaning of "MIDI". Implementers of MIDI
technology should consult MMA and/or AMEI (depending on the relevant market) for specific
trademark usage policies.

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IEC 63035:2017  IEC 2017 – 7 –
MIDI (MUSICAL INSTRUMENT DIGITAL INTERFACE) SPECIFICATION 1.0
(Abridged Edition, 2015)



1 Scope
This International Standard specifies a hardware and software specification which makes it
possible to exchange symbolic music and control information between different musical
instruments or other devices such as sequencers, computers, lighting controllers, mixers, etc.
using MIDI technology (musical instrument digital interface).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements of this document. For dated references, only the edition
cited applies. For undated references, the latest edition of the referenced document (including
any amendments) applies.
IEC 60130-9, Connectors for frequencies below 3 MHz - Part 9: Circular connectors for radio
and associated sound equipment
3 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
velocity
parameter which typically changes the intensity and resultant volume of the note that is being
played and varies according to the force applied
Note 1 to entry: Velocity is used as Key Velocity as in a piano key.
3.2
aftertouch
parameter that measures the level of intensity applied to a note after it has been played and
continues to be depressed
Note 1 to entry: Typically, Aftertouch is useful for adding vibrato or tremolo effects to a sound in much the same
way that a violin can add volume or pitch changes to a sustained note using finger vibrato or additional bowing
intensity.
3.3
modulation wheel
wheel controller found on synthesizers that players can use to progressively introduce
modulation depth to a sound

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3.4
pitch wheel
wheel type device, normally found to the left of a synthesizer keyboard, used to manipulate
the pitch of a played note or notes
3.5
pitch bend
activity or message, generally initiated by a pitch wheel, that smoothly raises and/or lowers
the pitch of note or chord
3.6
oscillator
circuitry or software program that generates the kernel of a synthesizer sound
Note 1 to entry: In the early days, oscillators generated fairly basic sound types (sawtooth, square, pulse etc). In
modern synthesizer engines, oscillators can be driven by myriad waveforms and samples.
3.7
pan
parameter that specifies the location of a sound within the stereo field
4 General
4.1 Hardware
The hardware MIDI interface operates at 31,25 × (1 ± 1 %) kBd asynchronous, with a start bit,
8 data bits (D0 to D7), and a stop bit. This makes a total of 10 bits for a period of 320 µs per
serial byte. The start bit is a logical 0 (current on) and the stop bit is a logical 1 (current off).
Bytes are sent LSB first.
Circuit: (See Figure 1). 5 mA current loop type. Logical 0 is current ON. One output shall drive
one and only one input. To avoid ground loops, and subsequent data errors, the transmitter
circuitry and receiver circuitry are internally separated by an opto-isolator (a light emitting
diode and a photo sensor which share a single, sealed package). The receiver shall require
less than 5 mA to turn on. Rise and fall times should be less than 2 µs.
Connectors: DIN 5 pin (180°) female panel mount receptacle which is specified in
IEC 60130-9 as type designation IEC-04. The connectors shall be labelled "MIDI IN" and
"MIDI OUT". Note that pins 1 and 3 are not used, and should be left unconnected in the
receiver and transmitter. Pin 2 of the MIDI In connector should also be left unconnected.
The grounding shield connector on the MIDI jacks should not be connected to any circuit or
chassis ground.
When MIDI Thru information is obtained from a MIDI In signal, transmission may occasionally
be performed incorrectly due to signal degradation (caused by the response time of the opto-
isolator) between the rising and falling edges of the square wave. These timing errors will
tend to add up in the "wrong direction" as more devices are chained between MIDI Thru and
MIDI In jacks. The result is that, regardless of circuit quality, there is a limit to the number of
devices which can be chained (series-connected) in this fashion.

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IEC 63035:2017  IEC 2017 – 9 –
L
Rd
Opto-isolator
6
2 4
TO
UART
Vo
Rb
5
1
DI
GND
IN 914
NC
2
4
5
1 Optional
NC NC
3
Re
L
MIDI IN
Rf
2
A
4
5
1
NC NC
3
MIDI THRU
Ra
L
Rc
From
2
A
4
UART
5
1
NC NC
3
MIDI OUT

IEC
Key
Components Supplies
Ra, Rb, Rc, Re, Rf
resistor R = 220 Ω L +5 V
Rd
resistor R = 280 Ω
NOTE 1 Opto-isolator shown is Sharp PC-900. (HP 6N138 or other opto-isolator can be used with appropriate
changes.)
NOTE 2 Gates "A" are IC or transistor.
NOTE 3 Resistors are 5 %.
Figure 1 – MIDI standard hardware
Cables shall have a maximum length of 15 m, and shall be terminated on each end by a
corresponding 5-pin DIN male plug which is specified in IEC 60130-9 as type designation
IEC-03. The cable shall be shielded twisted pair, with the shield connected to pin 2 at both
ends.
A MIDI Thru output may be provided if needed, which provides a direct copy of data coming in
MIDI In. For long chain lengths (more than three instruments), higher-speed opto-isolators
should help to avoid additive rise/fall time errors which affect pulse width duty cycle.

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4.2 Data format
MIDI communication is achieved through multi-byte "messages" consisting of one Status byte
followed by one or two Data bytes. Real-Time and Exclusive messages are an exception.
A MIDI-equipped instrument typically contains a receiver and a transmitter. Some instruments
may contain only a receiver or only a transmitter. A receiver accepts messages in MIDI format
and executes MIDI commands. It consists of an opto-isolator, Universal Asynchronous
Receiver/Transmitter (UART), and any other hardware needed to perform the intended
functions. A transmitter originates messages in MIDI format, and transmits them by way of a
UART and line driver.
MIDI makes it possible for a user of MIDI-compatible equipment to expand the number of
instruments in a music system and to change system configurations to meet changing
requirements.
MIDI messages are sent over any of 16 channels which are used for a variety of performance
information. There are five major types of MIDI messages: Channel Voice, Channel Mode,
System Common, System Real-Time and System Exclusive.
A MIDI event is transmitted as a "message" and consists of one or more bytes. Figure 2 to
Figure 5 show the structure and classification of MIDI data.
Byte
Status Byte Data Byte
(80H – FFH) (00H – 7FH)
IEC

Figure 2 – Types of MIDI bytes
Message
type
Channel System
Message Message
System System System
Channel Channel
Common Real Time
Exclusive
Voice Mode
Message Message Message
Message Message
IEC

Figure 3 – Types of MIDI messages

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IEC 63035:2017  IEC 2017 – 11 –
Status Byte
Status Byte Data Byte
Status Byte Data Byte Data Byte

IEC
Figure 4 – Structure of a single message
Status Byte Data Byte EOX Byte
IEC

Figure 5 – Structure of System Exclusive message
4.3 Message types
4.3.1 General
Messages are divided into two main categories: Channel and System.
4.3.2 Channel messages
A Channel message uses four bits in the Status byte to address the message to one of
sixteen MIDI channels and four bits to define the message (see Annex A). Channel messages
are thereby intended for the receivers in a system whose channel number matches the
channel number encoded into the Status byte.
An instrument can receive MIDI messages on more than one channel. The channel in which it
receives its main instructions, such as which program number to be on and what mode to be
in, is referred to as its "Basic Channel". An instrument may be set up to receive performance
data on multiple channels (including the Basic Channel). These are referred to as "Voice
Channels". These multiple-channel situations will be discussed in more detail later (see 4.5).
There are two types of Channel messages: Voice and Mode.
• VOICE: To control an instrument's voices, Voice messages are sent over the Voice
Channels.
• MODE: To define the instrument's response to Voice messages, Mode messages are sent
over an instrument's Basic Channel.
4.3.3 System messages
System messages are not encoded with channel numbers. There are three types of System
messages: Common, Real-Time, and Exclusive.
• COMMON: Common messages are intended for all receivers in a system regardless of
channel.
• REAL-TIME: Real-Time messages are used for synchronization and are intended for all
clock-based instruments in a system. They contain Status bytes only – no Data bytes.
Real-Time messages may be sent at any time – even between bytes of a message which
has a different status. In such cases the Real-Time message is either acted upon or
ignored, after wh
...