On Bit-Serial NoCs for FPGAs
On Bit-Serial NoCs for FPGAs
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FPGA 的位串行 NoC
DOI:
10.1109/fccm.2017.14
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发表时间:
2017
期刊:
影响因子:
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通讯作者:
Nachiket Kapre
中科院分区:
文献类型:
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作者:
Nachiket Kapre
We can build lightweight bit-serial FPGA NoC routers thatcost 20 LUT, 17 FF per router and operate at 800–900 MHzspeeds. Each bit-serial router implements deflection-routing on aunidirectional torus topology requiring 1b-wide connection perport. The key ideas that enable this implementation are (1)reformulation of the dimension-ordered routing (DOR) functionusing compact 1 LUT, 1 FF streaming pattern matchers, (2)compact retiming of the datapath signals into SRL16 blocks, and(3) careful FPGA layout to efficiently pack the router logic intosmall rectangular regions 2×4 SLICEs on the chip. We anticipatethese bit-serial NoCs can be used in a variety of scenariosincluding overlay support for triggered debug, lightweight controlsignal dissemination, massively-parallel bit-serial processing.