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Old 11-17-2007, 05:10 AM
subbu
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Default Gate count calculation in xilinx.

Hi,
Can anybody help me in providing a document or site in gate count
calculation in Xillinx Spartan 3E.
thanks & regard
subbu
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  #2 (permalink)  
Old 11-17-2007, 05:38 AM
Peter Alfke
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Default Re: Gate count calculation in xilinx.

On Nov 16, 9:10 pm, subbu <[email protected]> wrote:
> Hi,
> Can anybody help me in providing a document or site in gate count
> calculation in Xillinx Spartan 3E.
> thanks & regard
> subbu


Gate-count is a meaningless metric for FPGAs, where functionality is
implemented in coarser chunks, like LUTs and BlockRAMs, DSP slices,
sophisticated I/O etc.
Marketing might be tempted to claim inflated numbers, which would
create howling comments from the user community. Just don't dive into
this rat-hole !
Count instead flip-flops = Logic Cells, and then evluate the more
dedicated functions, like memories and multipliers/accumulators.
Peter Alfke, Xilinx Applications
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