Power Smart Interface for Mixed-Signal Simulation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional approaches to power management in integrated circuit design focus primarily on digital aspects, failing to adequately simulate and verify mixed-signal electronic circuits with specialized power requirements, such as low-power designs, which is a critical issue in modern design processes due to the increasing complexity of System-On-A-Chip designs.
Innovation Solution
The implementation of 'power smart' interface elements, such as Verilog-AMS connect modules, that convert and interface between analog and digital portions of electronic designs, allowing for power-aware simulation and verification without manual changes, by accounting for power information from power information files and auto-inserting based on connectivity and requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional power management approaches are used that focus only on digital aspects, then implementation at physical level is simplified, but verification and simulation of mixed-signal circuits with power requirements cannot be performed
Solution Approach 1:
The design is segmented into digital and analog domains, each with its own simulation engine. The digital domain uses event-driven simulation while the analog domain uses continuous-time simulation. This segmentation allows each domain to be verified with appropriate methods while maintaining overall system integration through defined interfaces and protocols.
Solution Approach 2:
An intermediary power-aware simulation framework is introduced that bridges digital and analog domains. This framework includes power models, power domain definitions, and interface specifications that enable coordinated simulation between domains. The intermediary layer handles power state transitions and ensures proper verification of mixed-signal circuits with power management requirements.
2Adaptability or versatility
If power information files are used to define power intents, then power management consistency across design phases is improved, but simulation of mixed-signal circuits remains unsupported
Solution Approach 1:
The power information file format is extended to serve multiple functions: it defines power intents for synthesis, routes power information through the design flow, and enables simulation verification. The same file structure supports both digital and analog domains, allowing a single unified approach to power management across all design phases including simulation.
Solution Approach 2:
Power information is defined in advance using standardized file formats during the design specification phase. Power domains, voltage levels, and power state transitions are predetermined and documented before simulation. This preliminary definition enables the simulation engine to properly configure power models and verify power-aware behavior without requiring manual setup during simulation.
3Measurement precision
If manual changes are made to models for power-aware simulation, then simulation accuracy for mixed-signal circuits is improved, but design process complexity and time increase
Solution Approach 1:
The simulation framework automatically extracts power information from the power information file and configures simulation models without manual intervention. Power domain assignments, voltage level mappings, and power state definitions are self-configured based on the standardized input files. This self-service approach maintains high simulation accuracy while eliminating manual model modification steps.
Solution Approach 2:
Power-aware simulation is achieved by changing simulation parameters and model configurations based on power information from standardized files. Voltage levels, power states, and operational modes are dynamically adjusted according to the defined power domains. These parameter changes are automatically applied by the simulation engine, maintaining accuracy without requiring manual model edits.
Data Source
AI summary
Disclosed are methods, systems, and structures for implementing an improved approach for simulating mixed-signal electronic circuits with specialized power management requirements, such as low power designs. Some approaches provide an improved method and system for providing a highly reliable, usable and scalable solution to allow for designers to use their power information files in a mixed-signal simulation and carry the impact of power intents defined on the digital blocks onto the analog blocks without needing any manual changes to models/designs.