Transition-Triggered Sampler Synchronization for Low-Power Delay Circuits
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Solution Overview
Problem
Existing programmable delay circuits consume excessive power due to frequent synchronization using clock signals, even when the digital control code does not change frequently, which is not suitable for high-frequency low-power applications.
Innovation Solution
A system and method utilizing transition detection and pulse generation to synchronize control signals only when changes occur in the digital control code, reducing power consumption by eliminating the need for continuous clock signal synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous clock signal synchronization is used in programmable delay circuits, then synchronization reliability is improved, but power consumption increases
Solution Approach 1:
The patent replaces continuous clock signal synchronization with periodic synchronization triggered only by transitions in the digital control code. The transition detection circuit monitors for changes in the control code, and the pulse generation circuit produces synchronization pulses only when transitions occur, rather than continuously clocking all registers at high frequency.
Solution Approach 2:
The patent dynamically adjusts the synchronization rate based on actual needs. Instead of using a fixed high-frequency clock signal for continuous synchronization, the system adapts the synchronization timing to match the actual update rate of the control code, activating synchronization only when control code transitions are detected.
2Speed
If high-frequency clock signals are used for synchronization, then synchronization speed is improved, but power consumption increases
Solution Approach 1:
The system uses periodic synchronization pulses generated only when control code transitions occur, replacing continuous high-frequency clocking. This maintains necessary synchronization timing while eliminating energy-wasting continuous operation at high frequency.
Solution Approach 2:
The patent changes the operational parameters of the synchronization system by switching from fixed high-frequency clocking to variable-rate pulse generation based on control code transition detection, optimizing the balance between synchronization speed and power consumption.
3Manufacturing precision
If continuous synchronization is implemented, then timing accuracy is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic synchronization triggered by control code transitions rather than continuous synchronization. This maintains timing accuracy at the moments when control code changes occur, while avoiding unnecessary continuous synchronization operations that consume power.
Solution Approach 2:
The transition detection circuit automatically detects when control code changes occur and triggers synchronization only when needed, making the system self-regulating and eliminating wasteful continuous operation while maintaining necessary timing accuracy.
Data Source
AI summary
A method of synchronization using samplers includes receiving a digital control code, converting the digital control code into control signals, inputting each of the control signals to a respective one of the samplers, detecting at least one bit transition in the digital control code, generating a synchronization pulse in response to detecting the at least one bit transition in the digital control code, and inputting the synchronization pulse to clock inputs of the samplers.