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Utilization report: Frequency counter core uses no clock buffers (assuming the reference clock has a global buffer already). Frequency counter uses 1 DSP48E per channel, and 1 DSP48 DSP48E for the reference clock. All clock measurement nets are driving exactly one load, the clock input of the DSP48E primitive, there is no other connections on that net. So it is irrelevant if the net is driven by some buffer or fabric local routing, the frequency performance of the channel is the same.

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