Multi-Purpose Memory Signal Path Configuration
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Solution Overview
Problem
Memory devices face challenges in increasing functionality without increasing pin count or physical space, as adding new signal paths requires more power and area, leading to decreased performance.
Innovation Solution
Configuring signal paths to support shared pathways between multiple channels, allowing a single pin or signal path to perform multiple functions such as initialization, error signaling, and low-power mode requests, thereby increasing functionality without additional pins or changes to the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If new signal paths are added to increase functionality, then device functionality is improved, but power consumption and area increase
Solution Approach 1:
The patent applies multi-functionality by enabling a single pin to serve multiple purposes across different operational modes. The pin can function as a clock input pin during normal operation, an initialization signal pin during initialization sequences, and an error signal pin for error detection. This eliminates the need for separate dedicated pins for each function, thereby increasing device functionality without proportionally increasing power consumption or area.
Solution Approach 2:
The patent implements dynamic pin reconfiguration where the function of a pin changes based on the operational state of the memory device. During initialization sequences, the pin is configured for initialization signaling; during normal operation, it functions as a clock input; and during error conditions, it signals errors. This dynamic adaptation allows the same physical resource to serve multiple functions over time, resolving the contradiction between functionality and resource consumption.
2Adaptability or versatility
If new signal paths are added to increase functionality, then device functionality is improved, but physical space and pin count increase
Solution Approach 1:
The patent applies multi-functionality by enabling a single pin to serve multiple purposes across different operational modes. The pin can function as a clock input pin during normal operation, an initialization signal pin during initialization sequences, and an error signal pin for error detection. This eliminates the need for separate dedicated pins for each function, thereby increasing device functionality without proportionally increasing power consumption or area.
Solution Approach 2:
The patent merges multiple signal paths into a single shared pathway. The initialization signal path, clock input path, and error signal path are combined into a single pin that can be configured for different functions based on operational context. This merging reduces the total number of pins and physical connections required, thereby increasing functionality without increasing physical space.
3Adaptability or versatility
If more pins and signal paths are added, then functionality is improved, but circuit complexity increases
Solution Approach 1:
The patent applies multi-functionality by enabling a single pin to serve multiple purposes across different operational modes. The pin can function as a clock input pin during normal operation, an initialization signal pin during initialization sequences, and an error signal pin for error detection. This eliminates the need for separate dedicated pins for each function, thereby increasing device functionality without proportionally increasing power consumption or area.
Solution Approach 2:
The patent implements dynamic pin reconfiguration where the function of a pin changes based on the operational state of the memory device. During initialization sequences, the pin is configured for initialization signaling; during normal operation, it functions as a clock input; and during error conditions, it signals errors. This dynamic adaptation allows the same physical resource to serve multiple functions over time, resolving the contradiction between functionality and resource consumption.
Data Source
AI summary
Methods, systems, and devices for multi-purpose signaling for a memory system are described. One or more signal paths of between a host device and a memory device may be configured to support shared pathways between multiple channels and to support multiple functions. For example, a signal path may be configured to communicate a state signal for an initialization sequence of the memory device, an error signal for the memory device to indicate that errors have occurred, or a low-power signal for the host device to request that the memory device enter a low-power mode, or a combination thereof. The signal path may be shared between two or more channels of the memory device.