Burst-End Clock Synchronization for High-Speed Interface Circuits
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Solution Overview
Problem
Current interface circuits for high-speed communication in electronic devices face challenges in efficiently managing bandwidth and reducing power consumption, particularly in transitioning between operation modes such as burst and stall modes, which affects data clock synchronization and system performance.
Innovation Solution
The interface circuit includes a pulse generation unit, a data clock synchronization unit, and a system clock synchronization unit that generate and synchronize burst end pulses and detection signals based on data and system clock signals, enabling quick operation mode conversion and efficient data transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the interface circuit uses traditional clock synchronization methods, then the system can maintain stable operation, but the operation mode transition speed is slow and power consumption is high
Solution Approach 1:
The interface circuit generates a burst end pulse signal in advance before the actual burst end condition occurs. This preliminary action allows the system to prepare for mode transition ahead of time, enabling faster switching between burst and stall modes without requiring complex real-time detection and processing, thereby reducing power consumption while maintaining high transition speed
2Reliability
If the interface circuit implements comprehensive clock synchronization, then data integrity is improved, but the circuit complexity increases
Solution Approach 1:
The interface circuit extracts and processes only the critical burst end detection signal separately from the main data stream. By isolating this specific synchronization requirement and handling it through a dedicated burst end pulse generation mechanism, the circuit achieves accurate data clock synchronization without implementing comprehensive complex synchronization for all signals, thus maintaining reliability while reducing overall circuit complexity
3Device complexity
If the interface circuit uses simple burst end detection, then the circuit design is simplified, but the data clock synchronization accuracy deteriorates
Solution Approach 1:
The interface circuit introduces a burst end pulse signal as an intermediary element between the raw burst end detection and the data clock synchronization mechanism. This pulse signal serves as a refined intermediate representation that captures the essential timing information with high precision, enabling accurate synchronization while keeping the detection circuit itself simple and easy to implement
Data Source
AI summary
An interface circuit of a semiconductor apparatus may include a pulse generation unit, a data clock synchronization unit and a system clock synchronization unit. The pulse generation unit may be configured to generate a burst end pulse from a burst end signal according to a data clock signal. The data clock synchronization unit may be configured to enable a data clock synchronization signal based on the burst end pulse and the data clock signal, and disable the data clock synchronization signal according to a burst end detection signal. The system clock synchronization unit may be configured to generate the burst end detection signal by synchronizing the data clock synchronization signal with a system clock signal.