PHY Controller Isolation Circuit for Anomaly Detection
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Solution Overview
Problem
In electronic devices with multiple connection ports, a faulty PHY controller can cause issues like file corruption and transmission denial, and resetting it affects all other PHY controllers due to a single control chip managing all ports.
Innovation Solution
A processing circuit for anomaly detection is introduced, comprising a PHY transmission unit, a physical layer control unit, a state detection unit, and a reset unit. This circuit monitors the operation state of each PHY controller independently and resets it to an initial state when an error is detected, isolating the faulty component without affecting others.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single control chip is used to manage all PHY controllers, then device complexity is reduced, but resetting a faulty PHY controller affects all other PHY controllers
Solution Approach 1:
The patent divides the control chip into multiple independent control units, each managing a specific PHY controller. This segmentation allows individual reset operations on faulty PHY controllers without affecting other ports, resolving the contradiction between simplified structure and reliable isolation.
Solution Approach 2:
The patent introduces a control unit as an intermediary between the reset signal source and each PHY controller. This intermediary enables isolated reset operations for each PHY controller through its own reset signal line, preventing the reset from propagating to other PHY controllers while maintaining manageable system architecture.
2Reliability
If all PHY controllers are reset simultaneously, then error propagation is prevented, but normal operation of other ports is interrupted
Solution Approach 1:
The patent segments the reset operation into individual reset signals for each PHY controller. When one port experiences an error, only its corresponding control unit triggers a reset for that specific PHY controller, leaving other ports operational and maintaining system productivity while ensuring error containment.
Solution Approach 2:
The patent implements local reset quality by providing dedicated reset signal lines for each PHY controller. This allows the reset operation to be applied locally to the faulty component only, without disrupting the normal operation of other ports, thus balancing reliability and productivity requirements.
Data Source
AI summary
A processing circuit, a network device, and a processing method for anomaly detection are provided. The network device includes a processing circuit and network ports. The processing circuit includes a physical layer (PHY) transmission unit, a PHY control unit, a state detection unit, and a reset unit. The processing circuit performs steps of: switching from operating in the first operation state to operating in a second operation state by the PHY control unit according to an operation request; obtaining a current operation state of the PHY control unit by the state detection unit; determining whether the current operation state and the second operation state are identical by the state detection unit; and driving the reset unit to reset the PHY control unit to an initial state if the current operation state and the second operation state are not identical.