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Spread spectrum clocking (SSC) is a special way to reduce the radiated emissions of digital clock signals. SSC is the variation of the frequency of a clock signal in a controlled way. In the frequency domain, the SSC reduces the peak amplitude of a digital clock signal by shifting the frequency. In other words, the energy of the clock is spread.
Introduction. Spread spectrum clocking is a technique used in electronics design to intentionally modulate the ideal position of the clock edge such that the resulting signal’s spectrum is “spread”, around the ideal frequency of the clock. In timing circuits, this has the advantage of reducing Electromagnetic Interference (EMI) associated ...
Introduction. The STM32F2 Series, STM32F4 Series and STM32F7 Series embed a SSCG (spread-spectrum clock generation) in their main PLL (phase-locked loop) system. This SSCG offers some advantages regarding electromagnetic compatibility. The main objectives of this application note are: to describe the SSCG principle in a simple way.
14 de dic. de 2015 · Spread spectrum clocking uses modulation to achieve the spread of the spectral power. The carrier signal which is typically a high frequency clock signal is modulated with the low frequency modulator signal for frequency modulation. While the overall energy is unchanged, the peak power is reduced. The amount of peak energy dispersion is ...
スペクトラム拡散クロックIC （周波数拡散クロックIC, Spread Spectrum Clock Generator, SSCG）は、デジタル機器のシステムクロックを生成するIC（図2）ですが、クロック源をスペクトラム拡散クロックICにすることでノイズの発生量を少なくできるノイズ対策部品でもあります。
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9 de dic. de 2020 · Purpose: This 5-minute video describes Spread Spectrum Clocking and how it applies to PCIe systems.What topics are covered?1. Electromagnetic Interference (E...
