Memory Controller Signal Timing Adaptation for Mixed Module Compatibility
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Solution Overview
Problem
Existing memory controllers are often configured to interface with specific types of memory modules, making it difficult and costly to adapt to different types of modules without redesigning the system or replacing the controllers, and compatibility issues arise when new modules are introduced into existing systems.
Innovation Solution
Configuring existing memory controllers to interface with various types of memory modules by using signal presence detect units to provide configuration data for adjusting signal timings and routing chip select and clock enable signals appropriately, allowing existing controllers to work with different module types without modification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If memory controllers are configured to interface with specific types of memory modules, then signal timing and control are optimized for that module type, but adaptability to different module types is reduced
Solution Approach 1:
The patent implements dynamic configuration of memory controllers through mode register settings that can be changed at runtime. The controller adapts its signal timing and routing behavior based on the detected memory module type, allowing a single controller design to work with multiple module types while maintaining optimized performance for each.
Solution Approach 2:
The invention changes the operational parameters of the memory controller (signal timings, routing configurations) based on the memory module type detected. By storing multiple sets of configuration parameters in mode registers and selecting the appropriate set based on module type, the system achieves both optimization and adaptability.
2Adaptability or versatility
If memory controllers are redesigned to interface with different types of memory modules, then compatibility with new modules is improved, but system complexity and manufacturing costs increase
Solution Approach 1:
The patent makes the memory controller universal by incorporating detection circuitry and multiple configuration sets within a single controller design. The controller can automatically detect the memory module type and configure itself appropriately, eliminating the need for multiple specialized controller designs and reducing system complexity.
Solution Approach 2:
The memory controller performs self-configuration by detecting the memory module type and automatically loading the appropriate configuration parameters from mode registers. This self-service capability eliminates the need for external redesign or manual reconfiguration when switching between different memory module types.
3Adaptability or versatility
If configuration data is provided to memory controllers, then interfacing with various memory module types becomes possible, but additional detection and routing components are required
Solution Approach 1:
The patent merges the detection, configuration storage, and controller functions into an integrated system. The mode registers are built into the memory module itself, and the detection logic is integrated with the controller's existing architecture, minimizing additional components while enabling configuration capability.
Data Source
AI summary
A memory system includes a memory controller and a memory module coupled to the memory controller. One such memory module may include a memory package of a first type and a signal presence detect unit configured to provide configuration data associated with a memory package of a second type to the memory controller. The configuration data may be used to configure the memory controller to interface with the memory package of a first type.