Memory Device Eye-Opening Monitor Signal Line Merging
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Solution Overview
Problem
Existing methods for performing an eye-opening monitor (EOM) operation in memory systems are inaccurate due to the use of different signal lines for measurement and actual signal reception, making the measurement process complex and unreliable.
Innovation Solution
A method for operating a memory device that performs a reliable EOM operation by using the same signal line for both measurement and actual signal reception, eliminating the need for external devices and simplifying the measurement process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different signal lines are used for measurement and actual signal reception, then external devices can be used for measurement, but measurement accuracy deteriorates and the measurement method becomes complex
Solution Approach 1:
The patent merges the measurement signal line and the actual signal reception line into a single shared signal line. The memory device performs eye-opening monitor operations by receiving both measurement signals and actual signals through the same signal line, eliminating the need for separate measurement infrastructure and ensuring measurement accuracy reflects actual operating conditions
2Ease of operation
If different signal lines are used for measurement and actual signal reception, then measurement can be performed, but the measurement method becomes complex
Solution Approach 1:
The patent combines the measurement function and actual signal reception function into a single signal line operation. The memory device uses the same signal line for both purposes, simplifying the measurement method by eliminating the need for separate measurement signal lines and reducing the complexity of the measurement process
Solution Approach 2:
The memory device performs self-measurement of signal quality by using its own signal line to conduct eye-opening monitor operations. This self-service approach eliminates the need for complex external measurement setups and simplifies the overall measurement process while maintaining measurement accuracy
Data Source
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AI summary
Provided are an operating method of a host device (100), an operating method of a memory device (200), and a memory system (1). The operating method of a host device (100) includes transmitting a request command for performing an eye-opening monitor (EOM) operation to a memory device (200), transmitting a parameter for performing the EOM operation to the memory device (200), transmitting pattern data for performing the EOM operation to the memory device, (200) and receiving a first response signal including a result of the EOM operation performed based on the parameter and the pattern data from the memory device (200).