Memory Power Transition Delay Tuning to Prevent Link Interference
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Solution Overview
Problem
Memory systems and host systems experience interference and noise during power transition operations due to similar power transition delays, leading to decreased reliability and performance in communication, and unnecessary latency when delays are set to avoid interference.
Innovation Solution
The memory system power transition delay is dynamically configured based on the host system power transition delay, initially set to a longer duration, and updated during an initial linking operation to ensure it is incrementally greater, preventing interference and noise without causing unnecessary latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If power transition delays are set to be similar for memory system and host system, then the transition process is simplified, but interference and noise occur during communication leading to decreased reliability
Solution Approach 1:
The patent implements dynamic adjustment of the power transition delay in the memory system based on the actual delay characteristics of the host system. Instead of using fixed similar delays, the memory system controller dynamically configures its power transition delay to be incrementally greater than the host system delay, preventing simultaneous signaling and eliminating interference while maintaining configuration simplicity.
2Reliability
If power transition delay in memory system is increased to avoid interference, then communication reliability improves, but unnecessary latency is introduced
Solution Approach 1:
The patent changes the delay parameter dynamically based on host system characteristics. The memory system controller receives information about the host system's power transition delay and adjusts its own delay parameter to be incrementally greater, optimizing the balance between preventing interference and minimizing unnecessary latency for each specific host system configuration.
Solution Approach 2:
The system implements a feedback mechanism where the memory system controller receives information about the host system's power transition delay characteristics and uses this feedback to dynamically configure its own delay parameter, ensuring optimal performance without introducing unnecessary latency.
3Device complexity
If fixed power transition delay is used, then configuration is simple, but it causes either interference or unnecessary latency
Solution Approach 1:
The patent transitions from static fixed delay configuration to dynamic delay adjustment. The memory system controller automatically adjusts its power transition delay based on host system characteristics, eliminating the need for manual configuration while preventing both interference and unnecessary latency through adaptive optimization.
Data Source
AI summary
Methods, systems, and devices for dynamic initialization delay management for a memory system are described. A memory system may perform a power transition operation from a hibernation mode to an active mode in response to a command from a host system. The memory system and host system may refrain from communicating signaling during the power transition operation due to power transition delays. A memory system power transition delay may be dynamically configured based on a host system power transition delay, such that the memory system power transition delay may be initially programmed then updated based on receiving an indication of the host system power transition delay. The host system may transmit the indication of the host system power transition delay during an initial linking operation with the memory system. The memory system may update the memory system power transition delay to be greater than the host system power transition delay.