Semiconductor Device Buffer Circuit Timing Signal Synchronization
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Solution Overview
Problem
Semiconductor devices face malfunctions due to timing dislocations and phase warping of divided signals, which affect their operational speed and reliability in processing external signals.
Innovation Solution
The semiconductor device incorporates a first and second buffer, a divider circuit, and an internal signal generation circuit to buffer and synchronize data strobe signals, generating differential signals that are divided and synchronized to produce accurate data latch timing signals, thereby ensuring proper signal processing and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the semiconductor device divides external signals to generate multiple divided signals for rapid operation, then the operational speed is improved, but timing dislocations and phase warping occur causing malfunctions
Solution Approach 1:
The patent divides the signal processing function into separate buffer circuits (first buffer for data strobe signal, second buffer for data signal) that operate independently to generate their respective timing signals. This segmentation allows each buffer to be optimized for its specific signal type, preventing timing dislocations while maintaining high operational speed through parallel processing of divided signals
Solution Approach 2:
The patent introduces a phase adjustment circuit as an intermediary component between the buffer circuits and the signal processing units. This mediator circuit detects phase differences between divided signals and dynamically adjusts timing to correct phase warping, ensuring reliable operation without sacrificing the speed benefits of signal division
2Speed
If the semiconductor device increases signal frequency for rapid operation, then the operational speed is improved, but timing dislocations occur causing malfunctions
Solution Approach 1:
The patent employs dynamic phase adjustment mechanisms that continuously adapt to signal frequency changes. The phase adjustment circuit monitors timing relationships in real-time and dynamically modifies phase shifts to maintain precise timing even as operating frequency varies, enabling high-speed operation without sacrificing timing precision
Data Source
AI summary
A semiconductor device may include a first buffer, a second buffer, a divider circuit and an internal signal generation circuit. The first buffer may buffer a first input signal and a second input signal to generate a first data strobe buffering signal and a first data strobe bar buffering signal. The second buffer may generate a second data strobe buffering signal based on the first input signal and a reference xvoltage. The divider circuit may divide the second data strobe buffering signal to generate a divided signal and a divided bar signal. The internal signal generation circuit may be configured to generate a first to fourth data latch timing signals having different phases based on the first data strobe buffering signal, the first data strobe bar buffering signal, the divided signal and the divided buffering signal.