Datapath Component Row Formation for Timing Optimization
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Solution Overview
Problem
The design of microelectronic circuits, particularly datapath blocks, is time-consuming and lacks optimization, leading to potential timing delays due to manual placement of components without consideration for wire lengths and interconnectivity.
Innovation Solution
A method and tool for automatically organizing components into rows based on connectivity, using a hypergraph representation to minimize wire lengths and optimize placement, by identifying sequential and combinational components and assigning unique identifiers to create a hypergraph that facilitates efficient component placement within the datapath block.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If manual placement of datapath components is used, then design flexibility is maintained, but design time increases significantly and optimization is lacking
Solution Approach 1:
The system performs automatic placement of datapath components without requiring manual intervention. The placement tool independently analyzes the netlist, identifies component types, and organizes components into rows based on connectivity patterns, enabling the design process to serve itself rather than relying on manual designer input for routine placement tasks
Solution Approach 2:
The system changes the organizational parameters of components by analyzing connectivity patterns and wire lengths. It transforms the placement organization from manual designer discretion to an automated system that optimizes based on electrical connectivity parameters, grouping sequential and combinational components according to their interconnection patterns
2Reliability
If manual placement of components is used, then design complexity is reduced, but wire lengths increase and timing performance deteriorates
Solution Approach 1:
The placement process is segmented into distinct phases: identifying sequential components, identifying combinational components, analyzing connectivity patterns, and organizing into rows. This segmentation allows the complex placement task to be broken down into manageable automated steps that improve timing performance without overwhelming design complexity
Solution Approach 2:
The system introduces an automated placement tool as an intermediary between the netlist and the final layout. This intermediary analyzes connectivity patterns and wire lengths, acting as a mediator that optimizes component placement to reduce timing delays while managing the complexity of the placement process through systematic automated procedures
3Productivity
If components are placed without optimization, then ease of design is maintained, but wire lengths increase and performance metrics decrease
Solution Approach 1:
The system performs preliminary analysis of the netlist to identify component types and connectivity patterns before actual placement occurs. By pre-organizing components into sequential and combinational groups and analyzing their interconnections in advance, the system prepares an optimized placement strategy that reduces wire lengths before the physical layout is created
Solution Approach 2:
The system optimizes wire length parameters by analyzing connectivity patterns and organizing components to minimize interconnection distances. It changes the spatial arrangement parameters based on electrical connectivity data, grouping components that are heavily interconnected to reduce the stationary wire length between them
Data Source
AI summary
Implementations of the present disclosure involve methods and systems for component placement in a datapath block of a microelectronic circuit design. In particular, implementations provide for collecting groups of common components in the datapath block that form a row or partial row. A preliminary layout of the datapath block is performed with the component set rows and any other components of the datapath block design. Common components are then collected into groups or sets to form additional rows within the datapath layout, with at least some consideration to the wire lengths between components in the rows. By collecting common components into rows with consideration to the wire lengths between interconnected components, the timing performance of the datapath block may be improved.