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Clock skew (sometimes called timing skew) is a phenomenon in synchronous digital circuit systems (such as computer systems) in which the same sourced clock signal arrives at different components at different times due to gate or, in more advanced semiconductor technology, wire signal propagation delay.
slew rate effect on a square wave: red=desired output, green=actual output. In electronics and electromagnetics, slew rate is defined as the change of voltage or current, or any other electrical or electromagnetic quantity, per unit of
Clock synchronization is a topic in computer science and engineering that aims to coordinate otherwise independent clocks. Even when initially set accurately, real clocks will differ after some amount of time due to clock drift , caused by clocks counting time at slightly different rates.
Principal among these is clock/data misalignment, or clock skew. A phase-locked loop on the receiving side needs a high enough bandwidth to correctly track a spread-spectrum clock. [9] Even though SSC compatibility is mandatory on SATA receivers, [10] it is not uncommon to find expander chips having problems dealing with such a clock ...
Clock feedthrough is generally considered harmful. Methods to reduce clock feedthrough include: Slew rate reduction of the clock signal, usually by the resistor in series with the controlled gate. Reduction of the voltage swing of the clock signal; Reduction of the interconnects parasitic capacitance by rerouting interconnects
Irving Oil warned New England customers over the weekend that President Trump's tariffs on Canada, if enacted, would immediately be passed on to their heating bill, flying in the face of the ...
A clock domain is defined as a group of flip-flops with a common clock. Such architectures can form a circuit guaranteed free of metastability (below a certain maximum clock frequency, above which first metastability, then outright failure occur), assuming a low-skew common clock. However, even then, if the system has a dependence on any ...
In 2006, a side channel attack was published [5] that exploited clock skew based on CPU heating. The attacker causes heavy CPU load on a pseudonymous server (Tor hidden service), causing CPU heating. CPU heating is correlated with clock skew, which can be detected by observing timestamps (under the server's real identity).