Automated Timing Constraint Generation for PLD Input Interfaces
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Solution Overview
Problem
PLD designers face challenges in applying timing constraints to input interfaces due to the proliferation of I/O interface communication standards and the complexity of constraint language options, requiring detailed knowledge and potential for errors in constraint definition.
Innovation Solution
A method for automatically generating timing constraints based on graphical representations of input interface timing parameters, allowing designers to define input interface timing specifications without explicit constraint definition, using a graphical user interface to retrieve and determine timing parameters and generate constraint code segments in a native language.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If designers manually define timing constraints using constraint language, then precise timing control is achieved, but designer complexity and error potential increase
Solution Approach 1:
The patent introduces an automated constraint generation tool as an intermediary between the designer and the constraint language. The tool translates high-level interface timing specifications into detailed constraint language automatically, eliminating the need for designers to manually write complex constraint code while maintaining precision.
Solution Approach 2:
The system enables self-service by allowing the constraint generation tool to automatically analyze the interface timing specifications and generate appropriate constraints without requiring designer intervention in the constraint writing process. The tool serves itself by understanding both the timing requirements and the constraint language syntax.
2Manufacturing precision
If designers manually apply timing constraints, then constraint accuracy can be controlled, but time consumption and productivity decrease
Solution Approach 1:
The patent implements preliminary action by having the automated tool prepare and generate constraint code in advance based on interface timing specifications. This eliminates the time-consuming manual process of writing and debugging constraint language while ensuring accuracy through systematic generation.
Solution Approach 2:
The patent replaces the mechanical process of manual constraint writing with an automated computational system. The tool uses algorithms to translate timing specifications into constraint language, substituting manual intellectual labor with automated processing while maintaining or improving accuracy.
3Reliability
If comprehensive timing constraints are applied to all input interfaces, then design validity is verified, but the proliferation of I/O standards increases complexity
Solution Approach 1:
The patent applies universality by creating a constraint generation tool that can handle multiple I/O interface standards through a unified approach. The tool understands various timing specifications and automatically generates appropriate constraints for different standards, eliminating the need for designers to learn and manage multiple constraint approaches.
Solution Approach 2:
The patent uses parameter changes by automatically adjusting constraint parameters based on the specific I/O interface standard being implemented. The tool modifies timing parameters, constraint syntax, and validation rules according to the interface type, ensuring design validity across diverse standards without increasing manual complexity.
Data Source
AI summary
A method and apparatus is provided for the automatic creation of timing constraints that are based upon input interface timing parameters entered through a graphical user interface that is associated with the one or more input interfaces. Ideal timing constraints are created from the input interface timing parameters for the one or more input interfaces, thereby enabling the analysis of the input interface(s) without requiring explicit constraints to be defined by the designer of the input interface(s). Timing constraints may, therefore, be automatically generated by the designer without the need for the designer to possess any detailed knowledge of the associated constraint language parameters. Once created, the automatically generated timing constraints are graphically displayed to the designer for verification and/or modification. The automated process removes any potential for improperly defining the input constraint language parameters associated with the input interface(s).