Host-Memory Link Preset Adaptation Using EOM Feedback
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Solution Overview
Problem
Existing data communication systems between host devices and memory devices struggle to adaptively change their settings in response to changing operating environments, such as temperature and voltage variations, which can lead to suboptimal signal quality and communication efficiency.
Innovation Solution
A method is introduced where the host device detects the need for an Eye Open Monitor (EOM) operation, requests it from the memory device, and adjusts the preset settings based on the performance results, ensuring optimal data communication by changing the preset parameters when the signal quality falls below a predetermined threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If preset parameters are fixed for data communication, then device complexity is reduced, but signal quality deteriorates under varying operating conditions
Solution Approach 1:
The patent implements dynamic preset adjustment by enabling the memory device to change communication presets based on EOM operation results. The system transitions from static preset configuration to dynamic adaptation, where the preset is automatically adjusted when signal quality degradation is detected, resolving the contradiction between fixed complexity and variable performance.
Solution Approach 2:
The patent changes communication parameters (preset values) based on operating conditions. The memory device monitors signal quality through EOM operations and modifies preset parameters accordingly, allowing the system to adapt to temperature and voltage variations without increasing overall device complexity.
2Reliability
If preset is changed to adapt to operating environment, then signal quality is improved, but device complexity increases
Solution Approach 1:
The memory device performs self-diagnosis through EOM operations and automatically adjusts its own preset parameters without external intervention. This self-service mechanism improves communication reliability while minimizing the need for complex external control systems, as the memory device independently monitors and adapts to environmental changes.
Solution Approach 2:
The system implements a feedback loop where EOM operation results are used to determine whether preset adjustment is needed. The memory device continuously monitors signal quality metrics and provides feedback to the host device, enabling automatic preset optimization without requiring complex manual control mechanisms.
3Reliability
If EOM operation is performed frequently to monitor signal quality, then communication reliability is improved, but productivity decreases
Solution Approach 1:
The patent implements periodic EOM operations rather than continuous monitoring. The host device requests EOM operations at predetermined intervals or based on specific triggering conditions, allowing the system to maintain signal quality assurance while minimizing interruptions to normal data transmission and preserving productivity.
Solution Approach 2:
The system performs EOM operations selectively rather than continuously - only when signal quality degradation is suspected or at predetermined intervals. This partial action approach provides sufficient monitoring to maintain reliability while avoiding excessive operations that would reduce overall data transmission efficiency.
Data Source
AI summary
A method for operating a host device and a memory device, and a vehicle including the host device and the memory device are provided. The method for operating a host device includes detecting a need for an EOM (Eye Open Monitor) operation, transmitting a command for requesting the EOM operation to a memory device in response to the detection of the need to perform the EOM operation, and receiving a response signal including changed preset information from the memory device.