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Digital designs have not traditionally suffered by issues associated with transmission line effects. At lower frequencies the signals remain within data characterization and the system performs as designed. But as system speeds increase, the higher frequency impact on the system means that not only the digital properties, but also the analog effects within the system must be considered. These problems are likely to come to the forefront with increasing data rates for both I/O interfaces and memory interfaces, but particularly with the high-speed transceiver technology being embedded into FPGAs.
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