Flash Memory Controller Automatic Interface Mode Switching
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing flash memory apparatuses fail to fully exploit access efficiency and prevent data errors when operating with multiple types of flash memories, as they can only configure one interface mode and timing at a time, leading to suboptimal performance and errors.
Innovation Solution
A flash memory controller with automatic memory interface mode switching, comprising control registers, a selection circuit, and an enable selection unit, allows the memory interface to dynamically adjust and switch interface modes based on the currently enabled flash memory, optimizing access efficiency and preventing data errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the memory interface is configured with a single interface mode and timing, then the device complexity is reduced and ease of operation is improved, but the access efficiency cannot be fully exploited when operating with multiple types of flash memories
Solution Approach 1:
The patent implements dynamic interface mode switching by introducing a mode selection register and control logic that automatically selects the appropriate interface mode based on the detected flash memory type. The interface can dynamically transition between different timing modes (e.g., Mode 0, Mode 1, EDO Mode) without requiring manual reconfiguration, thereby optimizing access efficiency for different flash memory types while maintaining manageable device complexity through automated control.
2Reliability
If the memory interface is configured with a single interface mode and timing, then the ease of operation is improved, but data errors occur when accessing different types of flash memories
Solution Approach 1:
The patent implements self-service through automatic interface mode detection and selection. The controller automatically detects the flash memory type (SLC or MLC) and selects the appropriate interface mode without requiring manual intervention. This self-configuring capability ensures data accuracy by matching the interface timing to the specific flash memory type while maintaining ease of operation, as the system performs the configuration automatically based on detected memory characteristics.
3Productivity
If the controller switches interface settings before changing access object, then the access efficiency for different flash memory types is optimized, but the loss of time due to frequent setting adjustments increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring multiple interface mode settings in dedicated registers (Mode 0 register, Mode 1 register, EDO Mode register) before actual flash memory access occurs. The control logic detects the flash memory type in advance and pre-selects the appropriate interface mode, avoiding the need for frequent setting adjustments during operation. This preliminary configuration reduces the time penalty associated with mode switching while maintaining optimized access efficiency for different flash memory types.
Data Source
AI summary
A flash memory controller with automatic interface mode switching is applied to a flash memory apparatus with a plurality of flash memories and the controller contains: a memory interface, a microprocessor, and an interface mode controller. The microprocessor recognizes the supported interface mode of every flash memory connected with the memory interface in an initial setting process, and individually sets the corresponding interface mode setting value into the interface mode controller. Thus, when the flash memory apparatus is operating in a normal operation state, the interface mode controller can output the corresponding interface mode setting value according to the present enabled flash memory, and the memory interface can adjust and switch the interface mode according to the interface mode setting value outputted by the interface mode controller. Thereby, the present invention can achieve the purpose whereby the flash memory apparatus can speed up accessing and increase efficiency.