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Giovanni Germani wrote:

I'm trying to simulate with those settings:
reset = 0
enable = 1
sync = 0, then i set it to 1, 1 clock cycle before data input
data_0, data_1, radom numbers

the problem is that i'll continue to obtain sync_o, data_0_o &
data_1_0 = 0 no matter what I try...

2005/5/23, Tom Hawkins <tom@c...>:
> Giovanni Germani wrote:
> > Hi!!
> > Thanks a lot for your answer, but I'm still having problems...
> > Can you tell me how must I set: reset_i, sync_i, enable_i, data_0_i, data_1_i ??
> 
> The reset_i and enable_i control the whole machine -- you can tie them
> to 0 and 1 repectively.
> 
> > And why there are two data input?? Are they real and img part?
> 
> No, they are two different, consecutive data points.  Thus, a 1024 point
> FFT is loaded in 512 clock cycles.
> 
> Each data point has it's own real and img part  (real are the MSBs and
> img are the LSBs).
> 
> -Tom
> 
> > Thanks in advance!!
> >
> > 2005/5/23, Tom Hawkins <tom@c...>:
> >
> >>cagliostro82@g... wrote:
> >>
> >>>Hello,
> >>>
> >>>I'm trying to simulate CF FFT core under Altera Quartus 4.2.
> >>>Compilation is succesfull, but I can't use it correctly because I don't
> >>>know anything about input and output...
> >>>What are Data_0, Data_1, Sync_in, Sync_out ... ????
> >>
> >>Pulse Sync_in, then on the next clock cycle start feeding the data set
> >>in on Data_0_in and Data_1_in (2 data points per cycle).  The output
> >>data (Data_0_out, Data_1_out) starts streaming out one cycle after the
> >>Sync_out pulse.
> >>
> >>BTW, data sets can be input without interruption, i.e. by pulsing
> >>Sync_in on the last two data points of the previous set.
> >>
> >>-Tom
> >>
> >>
> >>
> >>>Please someone help me!!!
> >>>
> >>>
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> >>>
> >>
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> >>
> >
> >
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> >
> 
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