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Supposed we have CLKA = 100MHz.
Then we generate CLKB = 200MHz based on CLKA, pls see the following picture: http://blogimg.chinaunix.net/blog/upfile2/080109103218.jpg In TimeQuest, how to define CLKB? The phase shift between CLKA & CLKB is based on fitting result, so they are unrelated clocks, right? And so I should cutting the path analysis between them?Link Copied
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In this case HDL means VHDL or Verilog.
I assume that the circuit can be described with schematic entry, too. I just said, I don't know how you instruct Quartus not to remove redundant logic cells. I see that you can use a lcell logic symbol. Shown with only 4 logic cells. You need at least 30.
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