Memory Link Architecture Sleep Mode Control
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Solution Overview
Problem
Conventional memory link architectures consume unnecessary power when flash memory is in standby mode or the CPU is not actively using volatile memory, leading to inefficient power management.
Innovation Solution
Implementing a method that includes sleep switching control and memory management operations to automatically switch the memory controller into a sleep mode when no command is received from the host processor, and powering down memory devices during storage or standby modes to reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the memory controller remains in active mode to ensure immediate response to commands, then the response speed is improved, but the power consumption increases
Solution Approach 1:
The memory controller dynamically switches between active mode and sleep mode based on command reception status. During setup time, if no command is received from the host processor, the controller automatically transitions to sleep mode to reduce power consumption. When a command is received, it switches back to active mode, ensuring immediate response when needed.
Solution Approach 2:
The system changes the operational state parameter of the memory controller based on activity detection. By monitoring whether commands are received during setup time and adjusting the power state accordingly (active vs. sleep), the system optimizes the balance between response speed and power consumption.
2Speed
If the memory devices remain powered on to maintain data accessibility, then the data access speed is improved, but the power consumption increases
Solution Approach 1:
The memory devices dynamically adjust their power state based on operational mode. In standby mode, the multi-port memory device is powered down to save energy while maintaining the ability to be quickly reactivated. In storage mode, the memory controller's memory is powered down while the multi-port memory device remains active, optimizing power consumption for different operational scenarios.
Solution Approach 2:
The system segments the memory architecture into two independent controllable parts: the multi-port memory device and the memory controller's internal memory. This allows selective powering down of different memory components based on operational needs, enabling fine-grained power management where only necessary memory portions remain active.
3Loss of time
If the memory controller continuously monitors for commands to ensure immediate responsiveness, then the response time is improved, but the power consumption increases
Solution Approach 1:
The memory controller employs periodic monitoring during setup time to detect command arrival. Instead of continuous monitoring, it checks at specific intervals (during setup time), allowing it to enter sleep mode between checks. This periodic action reduces power consumption while maintaining the ability to detect and respond to commands promptly when they arrive.
Data Source
AI summary
A memory link architecture (MLA) comprises a multi-port memory device, a memory controller, and a nonvolatile memory. The MLA can perform a sleep switching control operation or a memory management operation to reduce power consumption based on commands received from a host processor and/or automatic control methods.