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???
05/31/06 18:57
Modified:
  05/31/06 19:33
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 		 #117417 - nco simulation
Responding to: ???'s previous message
As you can see from the sim,the waveform stored in the internal rom is scaled according to the input_nco,the waneform is entirely upto you,in this case it was a sine wave with an offset.So it is in fact an arbitary function generator.
Dont worry about the odd shape of the waveform thats simply because the simulator treated the output waveform as a signed number.



List of 41 messages in thread
TopicAuthorDate
Sine Wave to pulse Converter            01/01/70 00:00      
   a very much simpler idea            01/01/70 00:00      
   In fact            01/01/70 00:00      
      Accuracy            01/01/70 00:00      
         the accuracy            01/01/70 00:00      
            Sinusoidal NCO            01/01/70 00:00      
               the original            01/01/70 00:00      
   if you can live with the delay, then            01/01/70 00:00      
      If all else fails            01/01/70 00:00      
   What about a fast comparator?            01/01/70 00:00      
      Great            01/01/70 00:00      
   Another Idea            01/01/70 00:00      
   It's doable, but why this way?            01/01/70 00:00      
   Zero-crossing detector            01/01/70 00:00      
   one thing nobody's mentioned ...            01/01/70 00:00      
      oh yeah            01/01/70 00:00      
      nco simulation            01/01/70 00:00      
         code            01/01/70 00:00      
      Don't like it            01/01/70 00:00      
         not an OP-Amp ..            01/01/70 00:00      
            What I had in mind            01/01/70 00:00      
               a) and b)            01/01/70 00:00      
               You can...            01/01/70 00:00      
            code            01/01/70 00:00      
               Thanks            01/01/70 00:00      
                  depends on what make of device they are            01/01/70 00:00      
                     GAL16V8            01/01/70 00:00      
                        WinCupl            01/01/70 00:00      
                        GAL16V8 is a bit small            01/01/70 00:00      
                           ispLEVER            01/01/70 00:00      
                              look around for PALASM            01/01/70 00:00      
                                 Mr.Boole invented it when silicon was a            01/01/70 00:00      
                                    it is a teeny bit ancient            01/01/70 00:00      
                                       Yes, it's ancient ... but so am I ...            01/01/70 00:00      
                                          VHDL is waning            01/01/70 00:00      
                                             Fewer vhdl users means.....            01/01/70 00:00      
                                             look at who pays for the articles            01/01/70 00:00      
                                             VHDL vs Verilog            01/01/70 00:00      
                              ispGAL            01/01/70 00:00      
   SGN output            01/01/70 00:00      
      Nope            01/01/70 00:00      

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