1、 INTERNATIONAL STANDARD IEC62050 First edition2005-07 IEEE 1076.6VHDL Register Transfer Level(RTL)synthesis Reference number IEC 62050(E):2005 IEEE Std.1076.6(E):2004 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numberin
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8、CON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.VHDL Register Transfer Level(RTL)synthesis INTERNATIONAL STANDARD IEC62050 First edition2005-07 IEEE 1076.6Commission Electrotechnique InternationaleInternational Electrotechnical Commission IEEE 2005
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10、 microfilm,without permission in writing from the publisher.International Electrotechnical Commission,3,rue de Varemb,PO Box 131,CH-1211 Geneva 20,SwitzerlandTelephone:+41 22 919 02 11 Telefax:+41 22 919 03 00 E-mail:inmailiec.ch Web:www.iec.ch The Institute of Electrical and Electronics Engineers,I
11、nc,3 Park Avenue,New York,NY 10016-5997,USATelephone:+1 732 562 3800 Telefax:+1 732 562 1571 E-mail:stds-infoieee.org Web:www.standards.ieee.org LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.1.Overview.91.1 Scope.91.2 Compliance to t
12、his standard.91.3 Terminology.101.4 Conventions.102.References.113.Definitions and acronyms.113.1 Definitions.113.2 Acronyms.124.Predefined types.135.Verification methodology.135.1 Combinational verification.145.2 Sequential verification.146.Modeling hardware elements.156.1 Edge-sensitive sequential
13、 logic.156.2 Level-sensitive sequential logic.276.3 Three-state logic and busses.316.4 Combinational logic.316.5 ROM and RAM memories.327.Pragmas.377.1 Attributes.377.2 Metacomments.548.Syntax.558.1 Design entities and configurations.558.2 Subprograms and packages.608.3 Types.648.4 Declarations.698.
14、5 Specifications.758.6 Names.778.7 Expressions.798.8 Sequential statements.838.9 Concurrent statements.898.10 Scope and visibility.948.11 Design units and their analysis.958.12 Elaboration.968.13 Lexical elements.968.14 Predefined language environment.96Annex A(informative)Syntax summary.99Index.120
15、IEC 62050:2005(E)IEEE 1076.6-2004(E)2 FOREWORD.3 IEEE Introduction.6 Published by IEC under licence from IEEE.2005 IEEE.All rights reserved.Annex C(informative)List of Participants.119 Annex B(normative)Synthesis package RTL_ATTRIBUTES.118CONTENTSLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERN
16、AL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 62050:2005(E)IEEE 1076.6-2004(E)3 Published by IEC under licence from IEEE.2005 IEEE.All rights reserved.INTERNATIONAL ELECTROTECHNICAL COMMISSION _ VHDL REGISTER TRANSFERT LEVEL(RTL)SYNTHESIS 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-operatio
