Power Bridge Circuitry Idle State Transition
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Solution Overview
Problem
Existing power bridge circuitry lacks efficient mechanisms for transitioning to an idle state during domain-specific power control, particularly when one power domain is powered down, leading to potential errors and increased complexity due to the need for additional components like sequencers to manage communication sessions.
Innovation Solution
The implementation of a power bridge circuitry with transition circuitry, message identification circuitry, and communication circuitry that detects cessation of communication messages to safely transition to an idle state, eliminating the need for a separate sequencer by identifying disconnection requests and acknowledgments across different communication protocols, thereby ensuring controlled power down procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional sequencer components are added to manage communication sessions during power domain transitions, then reliability of power control transitions is improved, but device complexity increases
Solution Approach 1:
The patent combines the sequencer functionality directly into the power bridge circuitry. The power bridge now includes transition circuitry that can detect cessation of communication messages and autonomously initiate transitions to idle state, eliminating the need for separate external sequencer components while maintaining reliable power control transitions.
Solution Approach 2:
The power bridge circuitry is enhanced to perform multiple functions: it continues to provide the bridge between power domains while also incorporating transition management capabilities through the transition circuitry. This multi-functional design allows the same component to handle both communication bridging and power state transitions, reducing overall system complexity.
2Reliability
If additional sequencer components are added to manage communication sessions, then error-free transitions between power states are ensured, but silicon resources increase
Solution Approach 1:
The transition management functionality is merged into the existing power bridge circuitry structure. The transition circuitry uses the communication circuitry already present in the power bridge to detect cessation messages, thereby ensuring error-free transitions without requiring additional discrete sequencer components that would consume extra silicon resources.
3Reliability
If additional sequencer components are added to manage communication sessions, then controlled power down procedures are achieved, but power resources increase
Solution Approach 1:
The power management functionality is integrated into the power bridge itself through the transition circuitry. This circuitry monitors communication messages via the existing communication circuitry and autonomously controls transitions to idle states, achieving controlled power down procedures without the overhead of separate sequencer components that would consume additional power.
Solution Approach 2:
The power bridge circuitry serves itself by incorporating transition management capabilities. The transition circuitry uses the communication circuitry already present in the power bridge to detect cessation messages and initiate idle state transitions autonomously, eliminating the need for external sequencer components and their associated power consumption.
Data Source
AI summary
Aspects of the present disclosure relate to power bridge circuitry comprising a first interface configured to interface with a source power domain; a second interface configured to interface with a target power domain; transition circuitry to receive a transition indication that the power bridge circuitry is to transition to an idle state; communication circuitry to communicate messages between the interfaces; and message identification circuitry to identify messages communicated by the communication circuitry, the identification circuitry being configured to detect the communication of a given message directed to a target component connected to the second interface and indicating cessation of communication between the target component and a source component connected to the first interface. The transition circuitry is configured, responsive to receiving the transition indication and responsive to the message identification circuitry detecting communication of the given message, to initiate a transition of the power bridge circuitry to the idle state.