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FFT and SDRAM

Altera_Forum
Honored Contributor II
1,000 Views

Hello, 

 

I want to use an Altera Cyclone III FPGA to run an FFT with the FFT Megacore Function (Quartus II v9.1).  

 

But the FPGA is to small to implement the FFT and other important functions.  

 

Is it possible to use an external SDRAM for the FFT to save internal resources?
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5 Replies
Altera_Forum
Honored Contributor II
78 Views

its not possible with the Altera FFT IP itself

Altera_Forum
Honored Contributor II
78 Views

thanks for your information...

Altera_Forum
Honored Contributor II
78 Views

 

--- Quote Start ---  

Hello, 

 

I want to use an Altera Cyclone III FPGA to run an FFT with the FFT Megacore Function (Quartus II v9.1).  

 

But the FPGA is to small to implement the FFT and other important functions.  

 

Is it possible to use an external SDRAM for the FFT to save internal resources? 

--- Quote End ---  

 

 

Hi ,i am a rookie and i'm studying the FFT IP CORE now, I just want to anlyse the signal as SIN(X), but now I don't know how to use the ip core. 

When we created the fft ip core, how to set the input signal and observe the results? 

Do i need write a state machine to control the signals such as sink_sop,sink_eop,sink_valid? 

Some other things do i need? 

Hope for your help.
Altera_Forum
Honored Contributor II
78 Views

Hello, 

 

yes, you have to write a state machine. Look at page 3-7 at the FFT Megacorefunction user guide and study the timing charts...
Altera_Forum
Honored Contributor II
78 Views

Thank you I'll have a try.

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