I want to measure the frequency of ring oscillator circuit I inserted in my design. I made circuit schematic using xilinx ISE. During behavioral simulation, my circuit is switching its output, but I could not see its waveform. Hence I could not measure its delay i.e. frequency.
When I select the mode of simulation as post-route, it shows my design is not yet instantiated (question mark near design), when I try to instantiate, its not doing so. Finally I could not measure ring oscillator frequency.
Hi Mehdi...
Thank you so much for your documentation. but, its not exactly i asked for. I want to know it using xilinx ISE or other design tools, where design can be made using VHDL / Verilog / Schematic.
The following page might be helpful
http://rijndael.ece.vt.edu/puf/testcircuit.html
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