Noneil asked in 科學其他:科學 · 1 decade ago

Gate Equivalents可以告訴我這是什麼?

GE(Gate Equivalents)找好久都查不到,拜託各位大大了!

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  • 1 decade ago
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    http://www.sprow.co.uk/fpgas/lingo.htm#Gates (第四個名詞解釋)

    Gate equivalents的定義:

    Designs targeted at FPGAs are often quoted in 'gate equivalents',which is the number of primitive gates (usually 2 input NANDs) you would have to wire up to get the same functionality as what you have created.

    The Xilinx compiler will tell you roughly how many gate equivalents you have used,and may abort the compilation process if it is larger than the number of gates in the device - not always though! Sometimes it is possible to use some special feature of the FPGA's architechture to save a few gates,eg.using flip flops in the IOB rather than in a CLB

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