Differential Equalization Circuit for Adaptive Signal Swing Control
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Solution Overview
Problem
Signal transmission efficiency in semiconductor apparatuses is limited due to variations in signal swing width, which existing equalization circuits cannot fully adjust.
Innovation Solution
An equalization circuit configuration that includes two equalization circuits and a control circuit to adjust voltage levels on signal lines, generating swing width decrease and increase signals based on selection signals to optimize signal swing width, coupled with a swing width adjustment circuit to fine-tune the adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single equalization circuit is used to adjust signal swing width, then the circuit complexity is low, but the signal transmission efficiency cannot be sufficiently improved
Solution Approach 1:
The equalization circuit is divided into a first equalization circuit and a second equalization circuit, each responsible for different swing width adjustment operations. The first equalization circuit adjusts voltage levels to decrease swing width, while the second equalization circuit adjusts voltage levels to increase swing width, allowing independent optimization of each function
Solution Approach 2:
The patent implements dynamic selection between different equalization modes through control signals (first equalization control signal and second equalization control signal). The system can dynamically switch between swing width decrease and increase operations based on channel conditions, making the equalization process adaptive rather than static
2Adaptability or versatility
If the equalization function adjusts voltage levels, then signal swing width can be modified, but the adjustment range is limited and cannot achieve desired swing width optimization
Solution Approach 1:
The patent changes the voltage level parameters of signal lines through two different equalization circuits. By applying different voltage adjustments (decrease via first equalization circuit, increase via second equalization circuit), the system achieves a broader range of swing width adjustments compared to a single equalization approach
Solution Approach 2:
The equalization system performs multiple functions through the combination of first and second equalization circuits: it can both decrease and increase swing width, providing universal swing width adjustment capability that adapts to various channel conditions and signal requirements
Data Source
AI summary
An equalization circuit includes a first equalization circuit and a second equalization circuit. The first equalization circuit, when a swing width decrease signal is activated, adjusts a voltage level of a first signal line in accordance with a second equalization control signal and adjusts a voltage level of a second signal line in accordance with a first equalization control signal to decrease a swing width of a differential amplification signal transmitted over the first signal line and the second signal line. The second equalization circuit, when a swing width increase signal is activated, adjusts the voltage level of the second signal line in accordance with the second equalization control signal and adjusts the voltage level of the first signal line in accordance with the first equalization control signal to increase a swing width of the differential amplification signal.