Friday, September 3, 2010

LEF/DEF Language Reference

This manual is a language reference for users of the Cadence® Library Exchange Format
(LEF) and Design Exchange Format (DEF) integrated circuit (IC) description languages.

LEF defines the elements of an IC process technology and associated library of cell models.
DEF defines the elements of an IC design relevant to physical layout, including the netlist and
design constraints. LEF and DEF inputs are in ASCII form.

(page 16)
(page 17)

About Library Exchange Format Files

A technology LEF file contains all of the LEF technology information for a design, such as
placement and routing design rules, and process information for layers

A cell library LEF file contains the macro and standard cell information for a design.

A technology LEF file contains all of the LEF technology information for a design, such as placement and routing design rules, and process information for layers

(page 18)

LEF Statement Definitions

Bus Bit Characters
[BUSBITCHARS "delimiterPair" ;]

(page 19)
Divider Character
[DIVIDERCHAR "character" ;]

(p20)
p22

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