Multi-mode Circuit Dynamic Mode Switching for Signal Distribution
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The variability in total delay of digital signal paths in integrated circuits, particularly in submicron technologies, poses a challenge as existing solutions require either high-power or low-power signal distribution blocks, leading to inefficiency and wastefulness, as circuit designers must design for worst-case semiconductor process conditions.
Innovation Solution
A method is introduced to dynamically switch the operating mode of multi-mode circuits among full-swing, limited-swing, full-swing to limited-swing converter, and limited-swing to full-swing converter modes based on desired performance levels, allowing for optimal power management and signal distribution path configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-power signal distribution blocks (CML circuits) are used to ensure signal transmission at desired frequency under worst-case process conditions, then signal transmission reliability is improved, but power dissipation increases
Solution Approach 1:
The patent implements dynamic mode switching capability in signal distribution blocks, allowing transitions between full-swing mode and limited-swing mode based on real-time performance requirements. This dynamic adaptation enables the system to use high-power CML circuits only when necessary for reliability, while operating in low-power CMOS mode during normal conditions, thus resolving the contradiction between reliability and power dissipation.
Solution Approach 2:
The patent changes the operating parameters of signal distribution blocks by introducing multi-mode operation with switchable characteristics. By adjusting the swing parameter (full-swing vs. limited-swing) and switching between different circuit implementations (CML vs. CMOS), the system can optimize the balance between signal transmission reliability and power dissipation according to actual operating conditions.
2Use of energy by moving object
If low-power signal distribution blocks (digital CMOS circuits) are used in fast IC chips, then power dissipation is reduced, but signal transmission at desired frequency cannot be guaranteed under worst-case process conditions
Solution Approach 1:
The patent enables dynamic adaptation of signal distribution blocks by implementing multi-mode operation. When process conditions are favorable (fast IC chips), the system operates in low-power CMOS mode. When performance degradation is detected or anticipated, the system dynamically switches to high-performance CML mode, ensuring reliability is maintained while minimizing power consumption under normal conditions.
Solution Approach 2:
The patent creates universal signal distribution blocks that can perform multiple functions: operating as low-power CMOS circuits under normal conditions and transitioning to high-performance CML circuits when needed. This multi-functionality allows the same hardware infrastructure to serve both power-efficient and high-reliability requirements, eliminating the need for separate circuit paths.
3Reliability
If designers must design entirely with high-power signal distribution blocks to account for worst-case conditions, then signal transmission reliability is improved, but device complexity and inefficiency increase
Solution Approach 1:
The patent implements universal signal distribution blocks that integrate both CML and CMOS circuit implementations within a single configurable unit. This multi-functional design eliminates the need for separate high-power and low-power circuit paths, reducing overall device complexity while maintaining the ability to guarantee reliability under worst-case conditions when needed.
Solution Approach 2:
The patent introduces dynamic mode switching capability that allows the signal distribution blocks to adapt their operation based on actual performance requirements. This dynamic approach replaces the static design of entirely high-power circuits with an intelligent system that uses high-power modes only when necessary, thereby reducing device complexity and improving efficiency.
4Use of energy by moving object
If low-power signal distribution blocks are used, then power dissipation is reduced, but adaptability to varying fabrication process conditions deteriorates
Solution Approach 1:
The patent implements dynamic mode switching that enables signal distribution blocks to adapt to varying fabrication process conditions. By monitoring performance and switching between full-swing and limited-swing modes, the system maintains adaptability across different process conditions while operating predominantly in low-power mode, thus resolving the contradiction between power dissipation and adaptability.
Solution Approach 2:
The patent changes the operating parameters of signal distribution blocks by introducing switchable modes with different characteristics. This parameter variation capability allows the system to adapt to different fabrication process conditions (fast or slow IC chips) while maintaining low-power operation during favorable conditions, thereby improving adaptability without sacrificing power efficiency.
Data Source
AI summary
A multimode circuit that is configured to operate in one of multiple operating modes is disclosed. In particular, an exemplary multimode circuit may be configured to operating in one of a full-swing mode, a limited-swing mode, a full-swing to limited-swing converter mode, and a limited-swing to full-swing converter mode. The operating modes of the multimode circuit may be dynamically selectable. One or more multimode circuits may be part of a configurable distribution path for controlling the performance of a signal distribution path or tree of an integrated circuit.