System clock signals to clock CPU and Peripherals:– MCLK: Master clock. Is CPU clock and peripherals.– ACLK: Auxiliary clock. For peripherals.– HSMCLK: Sub-system master clock. For peripherals. – SMCLK: Low speed sub-system master clock. For perip...-DPDK中文网

There are multiple clock sources and clock signals available in a system for several reasons:

Flexibility: Different components within a system may require different clock frequencies or timing characteristics. By providing multiple clock sources, the system can adapt to meet the specific requirements of each component.
Power Management: Having separate clock sources allows for independent control of the clock frequency for different parts of the system. This can help conserve power by running certain peripherals or subsystems at lower frequencies when they are not actively processing data.
Noise and Interference Reduction: Separating the clock signals into different sources can help reduce noise and interference between components. For example, high-speed CPU operations may introduce electrical noise that could affect sensitive peripheral circuits. By using separate clocks, these disturbances can be minimized.
Fault Isolation: If one clock source fails or becomes unstable, having multiple options allows the system to switch to an alternative source without disrupting overall functionality.
Performance Optimization: By offering a range of division factors, the system can fine-tune each clock signal to achieve optimal performance for specific tasks or subsystems.

In summary, having multiple clock sources provides flexibility, power management capabilities, noise reduction, fault tolerance, and performance optimization in complex systems with diverse requirements for various components and peripherals.

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