Clock Multiplexer Protection for BTI-Degraded Idle Channels
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Solution Overview
Problem
Integrated circuit systems lack detection mechanisms to ensure that Bias Temperature Instability (BTI) protection is enabled correctly, leading to potential damage from rule-based configuration errors and degradation in semiconductor devices under static conditions.
Innovation Solution
Implementing a protection circuit that reduces the frequency of clock signals during a BTI protection mode when channels are idle, with software alerts for user confirmation and automatic or manual mode options, using feedback signals to monitor channel activity and adjust clock signals accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If clock signals are continuously operated at high frequency, then productivity and performance are improved, but bias temperature instability degradation is accelerated
Solution Approach 1:
The patent implements periodic action by switching between active mode (high frequency clock operation) and BTI protection mode (low frequency or suspended clock operation). The clock multiplexer circuit selectively connects different clock sources based on channel activity status, enabling the channel to operate at high frequency only when needed and reducing frequency to minimize BTI degradation during idle periods.
2Reliability
If BTI protection mode is activated by lowering clock frequency, then reliability is improved, but productivity decreases during idle periods
Solution Approach 1:
The patent applies dynamics by making the clock frequency adaptable based on real-time channel activity detection. The system dynamically switches between high frequency (when channel is active) and low frequency (when channel is idle) using a clock multiplexer controlled by activity detection logic, optimizing the balance between performance and reliability protection.
3Reliability
If detection mechanisms are added to monitor BTI protection status, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent implements feedback by detecting channel activity status and using this information to control the clock multiplexer. The activity detection mechanism provides feedback about whether the channel is active or idle, enabling automatic switching between high frequency and low frequency modes without requiring complex external control circuits.
Data Source
AI summary
An integrated circuit includes a multiplexer circuit coupled to receive a first clock signal and a second clock signal and coupled to provide an output clock signal to a channel. A protection circuit is coupled to receive a feedback signal from the channel. The protection circuit causes the multiplexer circuit to provide oscillations in the second clock signal to the output clock signal in response to the feedback signal indicating that the channel is idle to cause the channel to be in a protection mode that reduces degradation from bias temperature instability. The protection circuit causes the multiplexer circuit to provide oscillations in the first clock signal to the output clock signal in response to the feedback signal indicating that the channel is active.