In order to fathom the effect on three-dimensional FPGA performance after IP cores are integrated
two FPGA structures are introduced in this paper: homogeneous 3D FPGAs with IP cores and coarse-grained heterogeneous ones.In the first place
we developed a new FPGA CAD tool
which is an upgrade version of a 2D FPGA CAD tool
to support FPGAs based on IP cores and 3D switch boxes
then use it to analyze the homogeneous 3D FPGA performance in different layers in terms of quality and quantity. Experiments reveal the fact that with the number of chip layer increases
total chip area will rise
in the other hand
critical path delay and chip area per layer fall accordingly. Compared to the homogeneous 3D structured FPGAs (with IP cores)
coarse-grained heterogeneous ones have better critical path delay
which proves such structure has the effectiveness on reducing critical path delay.
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references
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