IEC 62531:2012

Property Specification Language (PSL)

IEC 62531:2012(E) defines the property specification language (PSL), which formally describes electronic system behavior. This standard specifies the syntax and semantics for PSL and also clarifies how PSL interfaces with various standard electronic system design languages. This second edition cancels and replaces the first edition, published in 2007, and constitutes a technical revision.

General Information

• Status: Published
• Publication Date: 20-Jun-2012
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• 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 13 - TC 91/WG 13
• Current Stage: PPUB - Publication issued
• Start Date: 31-Mar-2012
• Completion Date: 21-Jun-2012

Relations

• Revises: IEC 62531:2007 - Standard for Property Specification Language (PSL)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62531
Edition 2.0 2012-06
™
IEEE Std 1850
INTERNATIONAL
STANDARD
Property Specification Language (PSL)

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IEC 62531
Edition 2.0 2012-06
IEEE Std 1850™
INTERNATIONAL
STANDARD
Property Specification Language (PSL)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XH
ICS 25.040; 35.060 ISBN 978-2-83220-106-0

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Contents
1. Overview. 1
1.1 Scope. 1
1.2 Purpose. 1
1.2.1 Background. 2
1.2.2 Motivation. 2
1.2.3 Goals . 2
1.3 Usage . 2
1.3.1 Functional specification.3
1.3.2 Functional verification. 3
2. Normative references. 7
3. Definitions, acronyms, and abbreviations. 9
3.1 Definitions . 9
3.2 Acronyms and abbreviations . 12
3.3 Special terms. 12
4. Organization. 15
4.1 Abstract structure. 15
4.1.1 Layers. 15
4.1.2 Flavors . 15
4.2 Lexical structure . 16
4.2.1 Identifiers . 16
4.2.2 Keywords . 16
4.2.3 Operators. 17
4.2.4 Macros . 22
4.2.5 Comments . 24
4.3 Syntax . 24
4.3.1 Conventions . 24
4.3.2 HDL dependencies. 25
4.4 Semantics . 29
4.4.1 Clocked vs. unclocked evaluation . 29
4.4.2 Safety vs. liveness properties. 30
4.4.3 Linear vs. branching logic . 30
4.4.4 Simple subset . 30
4.4.5 Finite-length vs. infinite-length behavior . 31
4.4.6 The concept of strength. 31
5. Boolean layer . 33
5.1 Expression type classes. 33
5.1.1 Bit expressions. 33
5.1.2 Boolean expressions . 34
5.1.3 BitVector expressions . 35
5.1.4 Numeric expressions. 35
5.1.5 String expressions . 36
5.2 Expression forms . 36
5.2.1 HDL expressions.36

Copyright ©2010 IEEE. All rights reserved. ix

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5.2.2 PSL expressions. 39
5.2.3 Built-in functions . 39
5.2.4 Union expressions.45
5.3 Clock expressions . 45
5.4 Default clock declaration . 47
6. Temporal layer. 49
6.1 Sequential expressions. 50
6.1.1 Sequential Extended Regular Expressions (SEREs) . 50
6.1.2 Sequences. 57
6.2 Properties . 63
6.2.1 FL properties. 63
6.2.2 Optional Branching Extension (OBE) properties . 84
6.2.3 Replicated properties . 90
6.3 Local variables. 93
6.4 Procedural blocks. 97
6.5 Property and sequence declarations. 103
6.5.1 Parameters. 104
6.5.2 Declarations . 106
6.5.3 Instantiation . 107
7. Verification layer . 111
7.1 Verification directives. 111
7.1.1 assert . 111
7.1.2 assume. 112
7.1.3 restrict . 113
7.1.4 restrict! . 113
7.1.5 cover. 115
7.1.6 fairness and strong_fairness. 116
7.2 Verification units . 117
7.2.1 Verification unit binding. 121
7.2.2 Verification unit instantiation . 121
7.2.3 Verification unit inheritance . 122
7.2.4 Overriding assignments . 124
8. Modeling layer. 129
8.1 Integer ranges. 129
8.2 Structures . 130
9. Scope and visibility rules. 131
9.1 Immediate scope . 131
9.2 Extended scope . 131
9.3 Direct and indirect name references . 132
Annex A (normative) Syntax rule summary. 135
Annex B (normative) Formal Syntax and Semantics of
...