Oscillator Circuit Performance Calculation for Integrated Circuits
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Solution Overview
Problem
Existing performance calculation methods for integrated circuits fail to accurately evaluate performance across varying operating conditions such as different voltages and temperatures, leading to inefficiencies in timing analysis and user experience.
Innovation Solution
A performance calculation system and method that utilizes multiple oscillator circuit systems to generate oscillation signals, sense operation states, and adjust signal periods, constructing functions based on performance values to ensure graph intersections, thereby calculating a precise performance function for integrated circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional timing analysis methods are used to evaluate integrated circuit performance, then the analysis process is simple, but the performance evaluation is inaccurate under varying operating conditions
Solution Approach 1:
The patent changes the parameters of oscillator circuits (such as period, frequency, duty cycle) under different operating conditions (voltage, temperature, process variations) to establish performance functions that accurately reflect circuit behavior. By measuring how oscillator parameters change with operating conditions, the system builds accurate performance models without requiring complex simulation under every possible condition.
Solution Approach 2:
The oscillator circuits serve dual purposes: they both generate clock signals for normal circuit operation and act as sensors to measure operating conditions and performance characteristics. This self-service approach eliminates the need for separate measurement devices, reducing system complexity while improving measurement accuracy.
2Measurement precision
If multiple oscillator circuit systems are used to sense operation states and adjust signal periods, then performance evaluation accuracy is improved, but hardware requirements increase
Solution Approach 1:
The oscillator circuits are designed to perform multiple functions simultaneously: generating clock signals for normal operation, sensing operating conditions (temperature, voltage, process variations), measuring performance parameters (period, frequency), and providing feedback for adjustment. This multi-functionality eliminates the need for separate measurement and control hardware, reducing overall hardware requirements while maintaining high measurement accuracy.
3Productivity
If performance functions are constructed based on oscillator signal periods under different operation states, then analysis time is reduced, but calculation complexity increases
Solution Approach 1:
The patent performs preliminary measurements of oscillator parameters under various operating conditions during the design and characterization phase. These measurements are used to pre-establish performance functions and lookup tables that can be quickly queried during actual operation. This preliminary action reduces real-time analysis time while the calculation complexity is confined to the offline characterization phase.
Solution Approach 2:
Instead of performing complex simulations for every performance evaluation, the system creates simplified mathematical models (copies) of the actual circuit behavior based on preliminary measurements. These model copies can be evaluated quickly with minimal computation, providing accurate performance estimates without the time cost of full-scale simulation.
Data Source
AI summary
A performance calculation method suitable for a chip is provided. The chip includes oscillator circuit systems configured to generate oscillation signals and to sense operation states of the chip to adjust periods of the oscillation signals. The method includes following operations: when the chip is in a first operation state, constructing a first function according to the periods of the oscillation signals and a first performance value of the chip; when the chip is in a second operation state, constructing a second function according to the periods of the oscillation signals and a second performance value of the chip; adjusting coefficients of the first or second function according to trajectories of graphs of the first and second functions, so that the graphs of the first and second functions intersect at a coordinate point; constructing a performance function of the chip according to the first and second functions.