Apparatus, method, and system for predicitve power delivery noise reduction

摘要

An apparatus and method is described herein for reducing noise in a power distribution network for an interface. The power distribution network is characterized. And based on that characterization, worst case patterns for the interface are predicted and avoided. As one example, characterization includes providing a stimulus, such as a step function stimulus, and determining a mathematical function response, such as a step function response. Then, based on the step function response, a resonant frequency for the power distribution network is determined; from which patterns that cause the resonant frequency are identified/predicted. And when identified patterns are detected, they are scrambled or manipulated to avoid causing a worst-case noise scenario in an interface's power distribution network.

主权项

1. An apparatus comprising:
an input/output (I/O) interface; a power delivery network coupled with the I/O interface, the power delivery network including at least some hardware; power characterization logic including hardware and adapted to characterize the power delivery network to obtain a mathematical function response associated with the I/O interface, wherein the power characterization logic comprises step function logic to cause a step function stimuli associated with the I/O interface and to determine a step function response responsive to the step function stimuli; and prediction logic including hardware and adapted to predict an I/O pattern to avoid based on the mathematical function response associated with the I/O interface.