Emulation system having a scalable multi-level multi-stage programmable interconnect network
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United States of America Patent
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Nov 12, 1996
Grant Date -
N/A
app pub date -
Oct 13, 1995
filing date -
Oct 13, 1995
priority date (Note) -
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Abstract
A scalable multi-level multi-stage network topology is employed to interconnect reconfigurable logic elements within the FPGA, inter-FPGA, interlogic boards, and inter-backplanes. More specifically, under the presently preferred embodiemnt, an on-chip 3-stage inter-logic element crossbar network is provided to each FPGA for interconnecting the reconfigurable logic elements and the I/O pins of the FPGA. A two level two-stage inter-FPGA crossbard network is provided to interconnect the FPGAs and I/O pins of the logic board. A two-level two-stage inter-board crossbar network is provided to interconnect the logic boards or I/O boards for interconnecting the logic elements to external devices. Finally, a single-stage inter-backplane network and a number of PCBs are provided to interconnect multi-backplanes to form a multi-crate system.
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