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www.protoexpress.com | ||
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www.signalintegrityjournal.com
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| | | | | Intra-pair skew is a crucial metric when working with multiple lines. Its behavior, measurements, and interpretations are closely linked to other forms of signal degradation, making the definition of a single skew value a nuanced issue that requires careful consideration. In this article, Gustavo Blando and Prashant Pappu introduce three distinct methods for measuring skew, providing options for a wide variety of contexts and skew measurement goals. | |
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www.signalintegrityjournal.com
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| | | | | In high-speed signaling with embedded clock a few ps in-pair skew may cause serious signal degradations. Point-to-point topologies and long PCB traces put the emphases on local speed variations due to bends, glass-weave, deterministic and random asymmetries. In this paper, we analyze the contributors to the delay in single-ended traces. Length in differential pairs varies due to bends and turns, so, at each turn, the outer trace has a little extra length. We show that using the center-line trace length can give a delay estimation . . . | |
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helentronica.com
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| | | | | IntroductionPart One - the transmitterTransmitter Circuit DesignLogic family choicePRBS architectureClock source and bufferDecoupling capacitorsManchester encoding Pre-emphasisLine driverLayout Introduction I am about to build a full PHY (physical, duh) layer for data transmission that simulates the multi-Gbps transceiver circuits usually seen in high-end FPGAs and ASICs. The reason I'm doing that is to get a closer... | |
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mkatkov.wordpress.com
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| | | For probability space $latex (\Omega, \mathcal{F}, \mathbb{P})$ with $latex A \in \mathcal{F}$ the indicator random variable $latex {\bf 1}_A : \Omega \rightarrow \mathbb{R} = \left\{ \begin{array}{cc} 1, & \omega \in A \\ 0, & \omega \notin A \end{array} \right.$ Than expected value of the indicator variable is the probability of the event $latex \omega \in... | ||
