Multi-Phase Data Output Timing Control for Memory Read Cycles
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Solution Overview
Problem
Current semiconductor memory apparatuses face challenges in controlling data input/output timings effectively for high-speed and reliable operation, particularly in adjusting data output based on warming-up cycles.
Innovation Solution
A data output control circuit is introduced, comprising a dividing circuit to generate multiple phase clock signals and a control signal generating circuit that uses these signals to produce data output control signals, allowing the semiconductor apparatus to internally adjust read enable signals and mask pulses based on warming-up cycle information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data output timing is adjusted based on warming-up cycles to improve high-speed operation, then operation reliability is improved, but control complexity increases
Solution Approach 1:
The patent divides the read enable signal into multiple phase clock signals (first phase, second phase, third phase, fourth phase) using a dividing circuit. This segmentation allows independent control of different data output timings based on warming-up cycle information, enabling precise timing adjustment without overwhelming complexity in the control logic.
Solution Approach 2:
The patent generates multiple phase clock signals in advance before data output is needed. The dividing circuit pre-processes the read enable signal to create phased clock signals, and the control signal generating circuit pre-determines which phase to use based on warming-up cycle information, eliminating the need for complex real-time timing calculations during data output.
2Measurement precision
If multiple phase clock signals are generated to control data output timing, then timing control precision is improved, but device complexity increases
Solution Approach 1:
The dividing circuit serves multiple functions: it divides the read enable signal into multiple phase clock signals, and these phased signals are universally used for controlling different data output timings based on warming-up cycles. The same circuit structure handles all timing control scenarios, reducing the need for separate control circuits for each timing case.
Solution Approach 2:
The patent introduces a control signal generating circuit as an intermediary between the dividing circuit and the data output circuit. This intermediary circuit receives the multiple phase clock signals and warming-up cycle information, then selects and outputs the appropriate control signal, simplifying the overall control architecture while maintaining precise timing control.
3Manufacturing precision
If warming-up cycle information is used to mask clock signals, then data output accuracy is improved, but signal processing complexity increases
Solution Approach 1:
The patent dynamically adjusts the data output timing by selectively masking phase clock signals based on warming-up cycle information. The control signal generating circuit changes its behavior according to the warming-up cycle state, enabling accurate data output timing adaptation without requiring a completely different circuit architecture for each timing scenario.
Data Source
AI summary
A data output control circuit includes a dividing circuit, a timing signal generating circuit and a control signal generating circuit. The dividing circuit divides read enable signals to generate multiple phase clock signals. The timing signal generating circuit generates a plurality of timing signals based on warming-up cycle information and the multiple phase clock signals. The control signal generating circuit generates data output control signals based on the multiple phase clock signals and the plurality of timing signals.