Allegro Constraint Compiler User Guide
Allegro Constraint Compiler
October 2019 15 Product Version 17.4-2019
© 1999-2019 All Rights Reserved.
Tables Types
The Object and Specification tables contain agnostic constraint information for common
design circuity and the Mapping table associates the agnostic constraints to design specific
objects. The compiler reads and combines all this constraint data to fully define the constraint
requirements for a design.
■ Mapping Name Table
■ Global Mapping Table
■ Object table
■ Rule Specification Table
■ Object Rule Specification Table
Mapping Name Table
Mapping table associates the design specific name to a string alias that is defined in other
tables. For example, Part (Component), Net or "*" (all object types). The compiler reads this
table to map alias place holders referenced in the data tables to be replaced with design
specific names. The mapping name table provides a central location to remap all the aliases
to the design specific names.
Header Rows Specify data type or constraint type information. Header rows
are specified between Table Keys and Data Rows.
The name of column header with semicolon separators could
span two rows. For example, Prop Delay: Min shown as Prop
Delay in first row and Min in second row
Data Rows Specify constraint values and requirements. Data rows are
specified between Header Rows and the End statement.
Comment Rows (;) Communicates design intent.
Note rows (#) Adds notification to compiler report.
