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讨论用高速串行链路解决系统间传递数据的瓶颈问题
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Today’s designers face a multitude of problems when trying
to move data within their systems. These problems range
from overtaxed parallel-bus bandwidth to a lack of pins at the
card edge connector. Even routing parallel buses around today’s
dense circuit boards is very difficult. This application
note discusses using high-performance serial links as a solution
to some of these bottlenecks. A serial approach provides
three immediate benefits: first, bandwidth may be off-loaded
from the backplane bus; second, connector pins are saved;
and, third, circuit board routing is made much easier since
only one or two traces have to be routed for the data path
(versus one for each data bus bit plus a separate clock).
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