Memory Array Access Sequencing for Receiver Masking Reliability
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Solution Overview
Problem
The combination of maximum-transition-avoidance (MTA) coding and receiver masking in memory devices leads to unpredictable and irreversible data changes, preventing reliable data storage and reducing the efficiency of memory device performance during testing.
Innovation Solution
Issuing sequences of write commands that do not overwrite memory locations and ensuring read sequences access memory locations in the same order as write sequences to maintain data integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If MTA coding and receiver masking are used in memory devices, then data transition control and signal reception accuracy are improved, but data reliability and storage reliability deteriorate due to unpredictable and irreversible data changes
Solution Approach 1:
The patent implements a feedback mechanism where the memory device monitors data changes caused by MTA coding and receiver masking, and the host device receives status information about these changes. This allows the system to detect when data transformations occur and adjust operations accordingly, converting an unpredictable process into a controllable one with feedback loops between host and device.
Solution Approach 2:
The patent applies preliminary action by having the host device issue specific sequences of write commands that prevent overwriting memory locations, and read commands that access locations in the same order as writes. This preparatory structuring of operations before data corruption can occur prevents the harmful effects of irreversible changes, allowing reliable data storage despite the presence of MTA coding and receiver masking.
2Stability of the object's composition
If MTA coding and receiver masking are used, then signal integrity is improved, but testing efficiency and device performance deteriorate
Solution Approach 1:
The patent changes operational parameters by implementing specific command sequences with controlled timing and ordering. By modifying how write and read operations are scheduled and ordered, the system maintains signal integrity benefits while enabling efficient testing. The parameter changes include command sequencing patterns, timing relationships, and access order specifications that allow testing to proceed effectively despite MTA and receiver masking being active.
3Use of energy by moving object
If receiver masking is applied to disable subset of sub-receivers, then power consumption is reduced, but data access reliability deteriorates
Solution Approach 1:
The patent applies local quality by selectively disabling only the subset of sub-receivers that are not needed for current operations, while keeping essential receivers active. This localized approach to receiver masking maintains power efficiency by reducing activity in unnecessary components while preserving data access reliability through selective maintenance of critical reception paths. The host device coordinates with the memory device to determine which sub-receivers can be masked without compromising data access.
Data Source
AI summary
Methods, systems, and devices for array access with receiver masking are described. A first device may issue to a second device a first sequence of write commands for a set of data. The first sequence of write commands may indicate different memory addresses in an order. After issuing the first sequence of write commands, the first device may issue to the second device a second sequence of read commands for the set of data. The second sequence of read commands may indicate the different memory addresses in the same order as the first sequence of write commands Based on issuing the second sequence of read commands, the first device may receive the set of data from the second device.