IEC 61691-1-1:2004

Behavioural languages - Part 1-1: VHDL language reference manual

Defines VHSIC Hardware Description Language (VHDL)accurately. Its primary audiences are the implementor of tools supporting the language and the advanced user of the language. Other users are encouraged to use commercially available books,tutorials,and classes to learn the language in some detail prior to reading this standard. These resources generally focus on how to use the language,rather than how a VHDL-compliant tool is required to behave. This publication has the status of a double logo IEEE/IEC standard

General Information

• Status: Published
• Publication Date: 05-Oct-2004
• ICS: 25.040.01 - Industrial automation systems in general
• ICS: 35.060 - Languages used in information technology
• Technical Committee: TC 91 - Electronics assembly technology
• Drafting Committee: WG 2 - TC 91/WG 2
• Current Stage: DELPUB - Deleted Publication
• Completion Date: 19-May-2011

Relations

• Replaces: IEC 61691-1:1997 - Design automation - Part 1: VHDL language reference manual
• Effective Date: 05-Sep-2023
• Revised: IEC 61691-1-1:2011 - Behavioural languages - Part 1-1: VHDL Language Reference Manual
• Effective Date: 05-Sep-2023

Standards Content (Sample)

INTERNATIONAL IEC
STANDARD 61691-1-1
First edition
2004-10
™
IEEE 1076
Behavioural languages –
Part 1-1:
VHDL language reference manual

Reference number
IEC 61691-1-1(E):2004
IEEE Std. 1076(E):2002
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INTERNATIONAL IEC
STANDARD 61691-1-1
First edition
2004-10
™
IEEE 1076
Behavioural languages –
Part 1-1:
VHDL language reference manual

Copyright © IEEE 2004 ⎯ All rights reserved
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No part of this publication may be reproduced or utilized in any form or by any means, electronic or
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Commission Electrotechnique Internationale
International Electrotechnical Commission
Международная Электротехническая Комиссия

– 2 – IEC 61691-1-1:2004(E)
IEEE 1076-2002(E)
CONTENTS
FOREWORD . 5
IEEE Introduction . 9
0. Overview of this standard . 10
0.1 Intent and scope of this standard. 10
0.2 Structure and terminology of this standard. 10
1. Design entities and configurations. 13
1.1 Entity declarations . 13
1.2 Architecture bodies . 17
1.3 Configuration declarations. 20
2. Subprograms and packages. 26
2.1 Subprogram declarations . 26
2.2 Subprogram bodies . 29
2.3 Subprogram overloading. 32
2.4 Resolution functions . 34
2.5 Package declarations. 35
2.6 Package bodies. 36
2.7 Conformance rules. 38
3. Types. 39
3.1 Scalar types . 40
3.2 Composite types. 46
3.3 Access types. 51
3.4 File types. 54
3.5 Protected types. 56
4. Declarations . 60
4.1 Type declarations. 60
4.2 Subtype declarations . 61
4.3 Objects . 62
4.4 Attribute declarations. 76
4.5 Component declarations. 77
4.6 Group template declarations . 77
4.7 Group declarations. 78
5. Specifications. 80
5.1 Attribute specification. 80
5.2 Configuration specification. 82
5.3 Disconnection specification. 90
6. Names . 93
6.1 Names . 93
6.2 Simple names. 94
6.3 Selected names. 95
6.4 Indexed names . 97
Published by IEC under licence from IEEE. © 2004 IEEE. All rights reserved.

IEEE 1076-2002(E)
6.5 Slice names . 98
6.6 Attribute names. 98
7. Expressions . 100
7.1 Expressions . 100
7.2 Operators. 101
7.3 Operands . 109
7.4 Static expressions. 116
7.5 Universal expressions . 118
8. Sequential statements. 120
8.1 Wait statement . 122
8.2 Assertion statement. 119
8.3 Report statement . 123
8.4 Signal assignment statement. 123
8.5 Variable assignment statement . 128
8.6 Procedure call statement . 129
8.7 If statement. 130
8.8 Case statement . 130
8.9 Loop statement. 131
8.10 Next statement . 132
8.11 Exit statement. 133
8.12 Return statement . 133
8.13 Null statement . 133
9. Concurrent statements. 135
9.1 Block statement. 135
9.2 Process statement. 136
9.3 Concurrent procedure call statements. 137
9.4 Concurrent assertion statements . 138
9.5 Concurrent signal assignment statements . 139
9.6 Component instantiation statements . 144
9.7 Generate statements . 150
10. Scope and visibility. 151
10.1 Declarative region. 151
10.2 Scope of declarations . 152
10.3 Visibility . 153
10.4 Use clauses. 156
10.5 The context of overload resolution . 157
11. Design units and their analysis . 158
11.1 Design units . 158
11.2 Design libraries .
...