I2C Signal Transmission Circuit for Faster Low-to-High Transitions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The transition speed of signals between low and high states in I2C interface signal transmission circuits is often limited due to poor circuit design, affecting signal transmission efficiency.
Innovation Solution
A signal transmission circuit incorporating a tri-state logic circuit, pull-up circuit, first and second multiplexers, and a selection circuit, which generates and manages selection signals to control the enabling and output signals, ensuring rapid voltage level changes by using multiplexers to select between enabling and high state signals based on voltage thresholds and conversion times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a conventional I2C interface circuit is used for signal transmission, then the circuit structure is simple, but the transition speed of signals between low and high states is limited
Solution Approach 1:
The patent applies dynamics by making the circuit configuration changeable through the selection circuit. The multiplexers dynamically switch between different circuit configurations based on the state of the output terminal, allowing the circuit to adapt its structure for optimal performance in different operating conditions, thereby achieving faster signal transitions without permanent complexity
Solution Approach 2:
The patent implements multi-functionality by designing the selection circuit to control multiple multiplexers that can perform different functions. The first and second multiplexers can respectively select between enabling signals and input signals, allowing the same circuit structure to handle both signal transmission and enabling control functions, improving speed while managing complexity through unified design
2Speed
If the output terminal voltage needs to transition rapidly from low to high state, then signal transmission speed improves, but the circuit requires additional control mechanisms increasing complexity
Solution Approach 1:
The patent applies feedback by using the selection circuit to monitor the voltage level of the output terminal and adjust the circuit configuration accordingly. When the output terminal voltage reaches the high state, the feedback mechanism triggers the selection circuit to switch the multiplexer configurations, ensuring rapid voltage transitions while using intelligent control to manage circuit complexity
Solution Approach 2:
The patent implements preliminary action by pre-configuring the multiplexers to be ready for rapid switching. The selection circuit is designed to anticipate voltage transitions and pre-position the multiplexer states, allowing the output terminal to transition rapidly from low to high state without requiring complex real-time control adjustments
Data Source
AI summary
A signal transmission circuit is provided. A tri-state logic circuit includes an enabling terminal, an input terminal and an output terminal, and is conducted and unconducted when the enabling terminal is at a high and a low state respectively. A pull-up circuit pulls up a voltage level of the output terminal. A first and a second multiplexers respectively output an enabling signal and an output signal to the enabling terminal and the input terminal according to a first status of a selection signal and respectively output a high state signal according to a second status of the selection signal. A selection circuit generates the selection signal having the first status when the voltage level is not larger than a first threshold value, having the second status after the voltage level is larger than the first threshold value and having the first status afterwards.