Memory Input Output Delay Optimization for Signal Timing Shifts
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Solution Overview
Problem
In electronic systems, the setup time and hold time of input/output signals between host controllers and memory devices can be shifted during high power consumption operations, leading to incorrect data writing or reading, necessitating optimization of these delays to improve reliability.
Innovation Solution
The method involves switching the memory device from a first mode to a second mode, transmitting read commands with varying delay values, determining optimized output and input delay values based on response status and data correctness, and adjusting these values to ensure accurate signal delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the memory device operates in high power consumption mode, then the processing speed or performance is improved, but the setup time and hold time of input/output signals are shifted causing incorrect data writing or reading
Solution Approach 1:
The patent adjusts the output delay values of read commands based on different power consumption modes. When switching from normal mode to high power mode, the system modifies the output delay parameters to compensate for timing shifts, ensuring that setup and hold times remain valid despite mode transitions. This parameter adjustment resolves the contradiction by maintaining signal reliability while enabling high performance operation.
2Reliability
If the output delay values are adjusted to optimize signal timing, then the reliability of data transmission is improved, but the complexity of the control mechanism increases
Solution Approach 1:
The patent implements a feedback mechanism where the host controller monitors the power consumption mode of the memory device and automatically adjusts the output delay values accordingly. The system receives mode information from the memory device, determines appropriate delay values based on the current mode, and applies these adjustments to maintain timing validity. This feedback-based approach resolves the contradiction by automating the adjustment process, reducing manual intervention complexity while ensuring reliable data transmission across different operating modes.
Data Source
AI summary
An input/output delay optimization method, used in an electronic system comprising a host controller and a memory device. The method comprising: switching the memory device from a first mode to a second mode a high power consumption mode of the memory device; transmitting one or more first read commands to the memory device, wherein the one or more first read commands are transmitted according to different output delay values; determining an optimized output delay value according to the response status of memory device for the one or more first read commands; transmitting one or more second read commands to the memory device, wherein the one or more second read commands are transmitted according to the optimized output delay value; receiving a known data from the memory device according to different input delay values; and determining an optimized input delay value according to the correctness of the received known data.