Product Documentation
What's New in LEF/DEF 6.0
Product Version 6.0, September 2022

Contents

About This Manual

How This Document Is Organized

Related Documents

1

LEF Syntax Changes

Overview

New LEF Syntax

Version 6.0 Added
Property Name Prefixes Changed to LEF_CDN_xxx
New objectTypes in PROPERTYDEFINITIONS
MANUFACTURINGGRID Added to All Layer Types
New OBSSPACING Statement in MACRO
New PROPERTY Statement in Layer Geometries in MACRO
New Keywords in Layer Geometries in MACRO for OBS Shapes
New PROPERTY Statement in SITE

Obsolete LEF Syntax

NETEXPR Removed from LEF MACRO PIN
LEF58_OBSSPACING Property Removed
LEF58_MANUFACTURINGGRID Property Removed

2

DEF Syntax Changes

New DEF Syntax

Version 6.0 Added
New objectTypes in the PROPERTYDEFINITIONS Section
New Attributes and PROPERTY for Routing Blockages
New Attributes and PROPERTY for Placement Blockages
New Attributes in the GROUPS Section
SOFTFIXED, PHYSICAL, and PINPROPERTY Added to COMPONENTS
New PROPERTY Statement in the PINS Section
Other Enhancements in the PINS Section
Enhancements in the NETS Regular Wiring Statement
New WIDTH Attribute in the NETS routingPoints Syntax
Enhancements in the SPECIALNETS Special Wiring Statement
New PROPERTY and VIA orient Keywords in the FILLS Section
Enhancements in the SCANCHAINS Section
New PROPERTY Keyword in the VIAS Statement
New PROPERTY, WIDTH, and NDR Keywords in TRACKS

Obsolete DEF Syntax

SOURCE, WEIGHT, and REGION Removed from COMPONENTS
Multiple Statements and Keywords Removed from the NETS Section
Multiple Routing Keywords Removed from NETS Regular Wiring
NETEXPR Statement Removed from PINS
PINPROPERTIES Section Removed
STYLES Section Removed
Multiple Statements and Keywords Removed from SPECIALNETS
STYLE and BLOCKAGEWIRE Removed in SPECIALNETS Special Wiring
SLOTS Section Removed
DESIGNRULEWIDTH Removed from DEF BLOCKAGES
EXTENSIONS Section Removed

3

ALIAS Statement

ALIAS Statement Removed


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