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xilinx Floating point core configuration

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jerry_gzy

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Hi, I am designing matrix vector computation with xilinx floating point cores.

I am using multiply and accumulate architecture for my design.

the question is, since floating point addition has a following configuration options

- Low latency OR High speed
-DSP48Es No usage OR Full usage

- latency range range 0..11

for Low latency option, it seems that DSP48E is not available (only for High speed option).

for latency range, I notice some data sheet refer the latency =1 being the minimal latency.

so is latency =0 possible? and since high latency(adder) will make accumulate architecture difficult, thus using high latency to speed up clock is not an option, is that ture?
 

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