Routing network for programmable logic device
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United States of America Patent
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Aug 25, 2015
Grant Date -
N/A
app pub date -
Sep 3, 2014
filing date -
Aug 27, 2014
priority date (Note) -
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Abstract
A routing network is associated with a logic island in a logic block of a programmable logic device and includes switches for each of feedback, street, and highway and clock networks. Some of the switches include multiple stages. The feedback network switch receives signals from the logic island as well as from neighboring logic blocks and provides an output to one or more stages of the street network switch. The street network switch receives the signals from the feedback network switch and signals from neighboring highway network switches and provides an output to the logic island. A clock network switch may receive dedicated clock signals or high fan out signals as inputs and provides outputs to the street network switch. The highway network switch receives signals from the logic island and from neighboring highway network switches and provides an output to neighboring highway network switches.
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