Clock Divider Synchronization for Independent Component Clocks
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Solution Overview
Problem
In electronic systems with multiple clocked components, adjusting the root clock signal can affect other components' clock dividers, leading to power flexibility issues due to differing divider settings and output options.
Innovation Solution
A device with a clock generator and sync circuitry that synchronizes adjustments to the root clock signal and component clock signals, allowing independent updates to each component's divider integer setting, ensuring coordinated changes without disrupting other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the root clock signal is adjusted to improve power flexibility, then power consumption can be optimized, but the divided clock of other components is affected negatively
Solution Approach 1:
A synchronization circuit is introduced as an intermediary between the root clock generator and component clock dividers. This circuit monitors divider settings across components and coordinates clock adjustments, ensuring that power optimization for one component does not disrupt the stable operation of other components with different divider configurations.
Solution Approach 2:
The system performs preliminary checks of all component divider settings before applying root clock adjustments. The synchronization circuit evaluates the impact of proposed clock changes on each component and only permits adjustments that maintain proper timing relationships, preventing harmful effects on other components.
2Adaptability or versatility
If different component clock dividers have different divider settings to enable performance flexibility, then each component can operate independently, but changing the root clock affects the divided clock of other components
Solution Approach 1:
The synchronization circuit continuously monitors the divider settings of all components and provides feedback control. When the root clock is adjusted, the circuit detects changes in divided clock frequencies and automatically coordinates adjustments across components to maintain proper timing relationships, simplifying the operation despite diverse performance requirements.
Solution Approach 2:
The synchronization circuit serves multiple functions simultaneously: it monitors divider settings, calculates timing relationships, coordinates clock adjustments, and prevents harmful effects on components. This multi-functional approach enables the system to support different performance flexibility requirements while maintaining ease of operation through centralized control.
Data Source
AI summary
A device includes a clock generator configured to generate a root clock signal based on an input clock signal and a clock generator divider integer setting. The device also includes a first component coupled to the clock generator and configured to generate a first component clock signal based on the root clock signal and a first component divider integer setting. The device also includes a second component coupled to the clock generator and configured to generate a second component clock signal based on the root clock signal and a second component divider integer setting. The device also includes sync circuitry coupled to each of the clock generator, the first component, and the second component, wherein the sync circuitry is configured to perform synchronized adjustments to the root clock signal, the first component clock signal, and the second component clock signal.