Memory Interface Clock Duty Control for DRAM Read-Write Signal Quality
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Solution Overview
Problem
Existing memory controllers use fixed duty cycles for clock signals, which do not achieve optimal signal quality in various access operations to volatile memory, such as DRAM, leading to inefficiencies.
Innovation Solution
A memory control circuit unit dynamically adjusts the duty cycle of clock signals based on the type of access operation, such as data read or write, to improve signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed duty cycle is used for the clock signal, then the device complexity is reduced and ease of manufacture is improved, but the signal quality for various access operations cannot be optimized
Solution Approach 1:
The patent applies the dynamics principle by making the clock signal duty cycle adjustable rather than fixed. The memory interface circuit dynamically changes the duty cycle based on the type of access operation (read or write), transforming a static parameter into a dynamic one that adapts to different operational requirements, thereby improving signal quality without requiring complete system redesign
Solution Approach 2:
The patent implements parameter changes by modifying the duty cycle parameter of the clock signal according to different access operation types. The memory interface circuit detects the operation type and adjusts the duty cycle parameter accordingly, allowing the system to optimize signal quality for both read and write operations through parameter adjustment rather than structural changes
2Productivity
If the duty cycle is set before factory and not dynamically adjusted, then the ease of operation is improved and device complexity is reduced, but productivity is reduced due to suboptimal signal quality in various operations
Solution Approach 1:
The patent applies the self-service principle by enabling the memory interface circuit to automatically adjust the clock signal duty cycle based on the detected access operation type. The system performs self-configuration without external intervention, selecting appropriate duty cycle values internally according to whether the operation is a read or write, thereby improving productivity while maintaining ease of operation
Solution Approach 2:
The patent implements feedback by having the memory interface circuit monitor the type of access operation being performed and use this information to adjust the clock signal duty cycle accordingly. This closed-loop approach ensures the system automatically optimizes signal quality based on actual operational requirements, improving productivity without complicating user operation
Data Source
AI summary
A clock signal control method is provided according to an exemplary embodiment of the disclosure. In the method, an access operation is executed on a volatile memory module through a memory interface circuit, and a duty cycle of a first clock signal is set according to a type of the access operation. Furthermore, the first clock signal is transmitted to the volatile memory module to execute the access operation.