Multi-Trim Oscillator Edge-Timed Frequency Switching
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Solution Overview
Problem
Maintaining synchronization between multiple frequencies generated by multi-trim oscillators is challenging, leading to potential spurious pulses and increased costs due to the deployment of multiple oscillators in a system.
Innovation Solution
A system with an oscillator and clock divider, coupled with oscillator control circuitry, dynamically adjusts the oscillator's frequency by monitoring clock edges to synchronize the oscillator's output frequencies, ensuring smooth transitions without spurious pulses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple oscillators are deployed to provide different frequencies to different electrical components, then frequency diversity is improved, but system cost and complexity increase
Solution Approach 1:
A single oscillator is designed to provide multiple frequency outputs through a clock divider circuit, allowing one oscillator to perform the function of multiple oscillators. The oscillator generates a primary clock signal that is divided into multiple frequency outputs for different electrical components, eliminating the need for separate oscillators for each frequency requirement.
Solution Approach 2:
Multiple frequency generation functions are merged into a single oscillator system. The patent combines the oscillator, clock divider, and control circuitry into an integrated solution where one oscillator core provides synchronized frequency outputs to multiple components, reducing the total number of oscillator units required in the system.
2Adaptability or versatility
If multiple oscillators are deployed to provide different frequencies, then frequency diversity is improved, but manufacturing cost increases
Solution Approach 1:
A single oscillator unit is designed to provide multiple frequency outputs through a clock divider circuit, allowing one oscillator to perform the function of multiple oscillators. The oscillator generates a primary clock signal that is divided into multiple frequency outputs for different electrical components, eliminating the need for separate oscillators for each frequency requirement.
3Adaptability or versatility
If oscillator frequency is changed dynamically, then frequency adaptability is improved, but synchronization accuracy deteriorates due to spurious pulses
Solution Approach 1:
The control circuitry prepares frequency change commands in advance and schedules them to take effect at appropriate clock edges. Before executing a frequency change, the system determines the optimal timing based on the current clock signal state, ensuring that the transition occurs at a synchronized moment rather than abruptly, which prevents spurious pulses.
Solution Approach 2:
The system monitors the clock signal edges and uses this feedback information to determine the precise moment to execute frequency changes. The control circuitry counts clock edges and triggers frequency transitions based on real-time feedback from the oscillator output, ensuring that changes are synchronized with the clock signal state and preventing timing conflicts that would cause spurious pulses.
Data Source
AI summary
Embodiments disclosed herein relate to the management of a multi-trim oscillator to provide synchronization across multiple frequencies derived from the multi-trim oscillator without causing spurious pulses of clock output. In one example, a system provides a first clock signal via an oscillator and a second clock signal based on the first clock signal and a divider. The system further receives a first signal that indicates a change in a frequency of the first clock signal from a first frequency to a second frequency. In response to the first signal, the system determines an edge of the second clock signal and provides, at a time based on the edge of the second clock signal, a second signal to the oscillator to cause the change to the second frequency.