If you meen "seeing" in hardware, you'll need a digital-to-analog conversion means. For low data rates, a pwm modulated pin with a low-pass can do. But involves additional logic. Some DevKits are equipped with DAC hardware, I think.
I don't understand the question. VHDL and Xilinx ISE is not supporting analog signals. Can you give an example of the signal definition for the involved signal.
actually i want to find fft of a sine wave using vhdl..
for that i'd given some values of sine wave as input and i got output in digital form..
But i want the output in analog form...
What can i do for that?
The output of a FFT is a complex frequency spectrum, possibly converted to a scalar power spectrum. It's basically an array of magnitude values, covering the frequency range 0 to fs, number of points depending on the FFT resolution. How the "analog form" should look like?
If you imagine a kind of spectrum analyzer display, the magnitude information (preferably in a logarithmic scale) can be send to a DAC, repeatedly with a sync signal or along with second X-axis analog signal and displayed by an oscilloscope. According to the FFT symmetry properties, you only need to display 0 to fs/2 for the real magnitude.
You can add analog signals in Modelsim. Search for "analog" in the user manual. I think it is simply a variation of formatting digital data. I don't think you will get it to display an FFT though!
i want to simulate a program using modelsim..But i'm using an IPCore written in VHDL..So while simulating an error due to unisim library is coming.How can i eliminate this problem?
Hi all, I have the same error as Sajimol: (vcom-42) Unsupported ModelSim library format for "lvqsim" .(format 3)
I would like how you fix it, I'm using Altium designer and modelsim as simulator.
Help please, thanks.