Clock Lane Link Detection for Coordinated Interconnect Power-Down
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Solution Overview
Problem
Communication systems face reliability issues due to abrupt power-down or reset sequences in devices with isolated software stacks, leading to stress on communication channels and reduced component longevity, as the software stacks cannot communicate these actions effectively, causing out-of-sequence shutdowns that exceed voltage thresholds.
Innovation Solution
Implementing link status detection circuitry in devices to monitor clock lanes, allowing devices to autonomously detect the status of the link and initiate power-down sequences without software intervention, ensuring components are shut down within safe voltage thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If software stacks independently power down or reset devices without communication, then device shutdown speed is improved, but component reliability deteriorates due to abrupt shutdowns exceeding voltage thresholds
Solution Approach 1:
The patent implements feedback by having each device monitor the link status of its counterpart through the communication channel. When a device detects that the other device is powering down or resetting, it automatically initiates a controlled power-down sequence in response to this feedback information, ensuring coordinated shutdown without requiring direct software communication.
Solution Approach 2:
The patent applies self-service by enabling devices to autonomously manage their own power-down sequences based on link status detection. Each device independently monitors the link and triggers appropriate shutdown actions without external software intervention, allowing the system to self-regulate and prevent abrupt shutdowns while maintaining reliability.
2Adaptability or versatility
If isolated software stacks control device shutdown independently, then system security is improved through isolation, but link management reliability deteriorates due to inability to coordinate shutdown sequences
Solution Approach 1:
The patent introduces an intermediary mechanism at the physical layer (link status detection circuitry) that enables indirect communication between isolated software stacks. This intermediary allows devices to share shutdown status information through the communication channel without compromising software isolation, bridging the gap between security requirements and coordination needs.
Solution Approach 2:
The patent replaces the software-based coordination mechanism with a hardware-level solution. Instead of relying on software stacks to communicate shutdown intentions, the system uses physical layer link status detection and automatic triggering circuits to coordinate shutdown sequences, eliminating the need for software coordination while maintaining reliability.
3Ease of operation
If abrupt shutdown is implemented to simplify control, then ease of operation is improved, but stress on communication channel increases reducing longevity
Solution Approach 1:
The patent applies preliminary action by having devices detect the other device's shutdown initiation and automatically trigger their own controlled power-down sequence in advance. This prevents abrupt shutdowns by ensuring both devices transition through proper power-down sequences, reducing stress on the communication channel while maintaining operational simplicity.
Data Source
AI summary
A device includes receiver circuitry to receive incoming signals on a clock lane and data lanes and detection circuitry. The detection circuitry is to monitor the incoming signals on the clock lane, and determine that an incoming pattern of the incoming signals on the clock lane does not correspond to a clock pattern associated with communicating data on the data lanes. The detection circuitry is to initiate a power-down sequence in response to determining that the incoming pattern does not correspond to the clock pattern.