SSD Controller ROM Mode Restoration via Power Management Circuit
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Solution Overview
Problem
Existing methods for restoring solid-state data storage devices require disassembly or sending them to a service station, which is inconvenient and time-consuming, especially when issues like firmware damage or errors prevent proper booting or recognition.
Innovation Solution
A data storage device restoring method that uses a power management circuit to determine if a normal signal is received from the SSD controller within a predetermined time, and if not, resupplies power to the device while stopping power to the non-volatile memory, forcing the SSD controller into a ROM mode, allowing for automatic debugging and upgrading without disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the existing method of taking out the solid-state data storage device and forcing it into initial mode through hardware process is used, then the device can be restored, but the user must disassemble the device and send it to a service station, which is inconvenient and time-consuming
Solution Approach 1:
The power management circuit automatically detects firmware errors and initiates the restoring process without user intervention. The system monitors the SSD controller's normal signal, and upon detecting an abnormality, automatically enters the ROM mode and begins the restoration process, eliminating the need for user disassembly or service station visits.
Solution Approach 2:
The power management circuit acts as an intermediary between the SSD controller and the restoring process. It monitors the controller's status and controls the power supply to non-volatile memory, enabling automatic entry into ROM mode when firmware errors are detected, thus bridging the gap between error detection and restoration.
2Extent of automation
If the power management circuit resupplies power to the data storage device but stops supplying power to the non-volatile memory, then the SSD controller is forced into ROM mode for automatic restoration, but this requires complex power control logic
Solution Approach 1:
The power management circuit is pre-configured with the capability to selectively control power supply to different components. When firmware errors are detected, the circuit immediately executes the pre-planned power control sequence: resupplying power to the overall device while simultaneously stopping power to the non-volatile memory, forcing the SSD controller into ROM mode without requiring complex real-time decision logic.
3Ease of repair
If the SSD controller is forced to stay in ROM mode by preventing boot code execution, then automatic debugging and upgrading can be performed, but the device cannot perform normal boot operations
Solution Approach 1:
The system operates in periodic cycles: during normal operation, the power management circuit supplies power to both the SSD controller and non-volatile memory for normal boot operations. When firmware errors are detected, it temporarily switches to ROM mode for debugging and upgrading. After restoration is complete, the system returns to normal operation mode, creating a periodic alternation between operational states that ensures both reliability and restorability.
Data Source
AI summary
A data storage device restoring method is provided, which is adapted to a data storage device. The data storage device includes an SSD controller, a power management circuit, a non-volatile memory, and a reset circuit. The data storage device restoring method includes: the power management circuit determines whether a normal signal from the SSD controller is received within a predetermined time; if not, the power management circuit resupplies power to the data storage device but stops supplying power to the non-volatile memory, thereby the SSD controller stays in a read-only memory mode to automatically execute the data storage device restoring process.