Storage Device Power-On-Reset Signal Error Detection
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Solution Overview
Problem
Existing storage devices cannot detect and specify the cause of shutdowns in the storage controller, particularly when errors occur in the power-on-reset signal during power supply.
Innovation Solution
A storage device with a monitoring circuit that detects voltage drops in the power-on-reset signal and provides an error detection signal to the storage controller, allowing for identification of the shutdown cause.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a monitoring circuit is added to detect voltage drops in the power-on-reset signal, then the ability to detect and specify shutdown causes is improved, but the device complexity increases
Solution Approach 1:
The monitoring circuit proactively detects voltage drops in the power-on-reset signal before they cause complete system failure. By continuously monitoring the signal during the power-on phase and generating error detection signals when voltage drops occur, the system prepares diagnostic information in advance, enabling reliable identification of shutdown causes without adding complex post-failure analysis mechanisms.
2Measurement precision
If error detection signals are continuously monitored and logged, then the diagnostic precision is improved, but the loss of time for error processing increases
Solution Approach 1:
The monitoring circuit continuously monitors the power-on-reset signal during the power-on phase and prepares error detection signals in advance. When voltage drops are detected, the error information is immediately captured and logged before the system fully initializes, enabling precise error identification without requiring time-consuming post-failure diagnostics or system restarts.
Data Source
AI summary
Disclosed is a storage device which includes a memory device, a power supply port that receives a first external power voltage from a host device, a power supply circuit that receives the first external power voltage from the power supply port and generates a first internal power voltage based on the first external power voltage, a monitoring circuit that receives the first external power voltage from the power supply port and generates a first power-on-reset signal based on monitoring the first external power voltage, and a storage controller configured to control the memory device. The storage controller is driven based on the first internal power voltage and the first power-on-reset signal, and the monitoring circuit detects a voltage drop in the first power-on-reset signal transmitted from the monitoring circuit to the storage controller and provides an error detection signal to the storage controller in response to detecting the voltage drop.