Memory Controller Command Queue Consolidation
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Solution Overview
Problem
Current memory device controllers face inefficiencies in command execution due to repetitive and overlapping commands, leading to suboptimal performance and increased execution time.
Innovation Solution
A memory controller with a command queue system that combines overlapping and sequential commands into single commands, and deletes commands that would be overwritten, thereby optimizing command execution and reducing partial page programming operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If commands are executed sequentially without modification, then command execution order is simple and predictable, but execution time increases due to repetitive and overlapping commands
Solution Approach 1:
The command queue circuitry performs preliminary analysis and modification of commands before execution. By examining the queue for overlapping and repetitive commands in advance and consolidating them, the system prepares optimized command sequences that reduce execution time without adding complexity during actual command processing
Solution Approach 2:
The circuitry merges overlapping and repetitive commands into single consolidated commands. When multiple commands target the same memory regions or perform redundant operations, they are combined into one efficient command, reducing the total number of execution cycles and eliminating wasted operations
2Productivity
If all commands in the queue are executed, then no data is lost, but partial page programming operations increase execution time
Solution Approach 1:
The system performs preliminary analysis of the command queue to identify commands that would result in partial page programming. By detecting these commands before execution and consolidating them with other commands targeting the same pages, the system ensures complete page operations while maintaining data integrity
Solution Approach 2:
Commands that would cause partial page programming are merged with other commands targeting the same memory pages. This consolidation ensures that pages are programmed completely in single operations rather than through multiple partial writes, improving both efficiency and reliability
3Loss of time
If overlapping commands are consolidated, then execution time decreases, but command queue management complexity increases
Solution Approach 1:
The command queue circuitry is self-sufficient in detecting and consolidating overlapping commands without requiring external control logic. The circuitry autonomously analyzes the queue, identifies redundant commands, performs consolidation, and manages the modified queue, eliminating the need for complex external management systems
Data Source
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AI summary
The present disclosure includes methods, devices, modules, and systems for modifying commands. One device embodiment includes a memory controller including a channel, wherein the channel includes a command queue configured to hold commands, and circuitry configured to modify at least a number of commands in the queue and execute the modified commands.