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fft core with quartus

no use

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fft core with quartus by Unknown on May 20, 2005			Not available!
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 ... ???? Please someone help me!!! 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 ... ???? Please someone help me!!!

fft core with quartus by Unknown on May 20, 2005			Not available!
You'll find a number of free video tutorials on Quartus II design here: <A HREF="http://www.demosondemand.com/dod/proddemos/vendors/pd_altera.aspx">http://www.demosondemand.com/dod/proddemos/vendors/pd_altera.aspx</A> They're free and quite detailed. Hope this helps. -----Original Message----- From: <A HREF="http://www.opencores.org/mailman/listinfo/cores">cores-bounces at opencores.org</A> [mailto:<A HREF="http://www.opencores.org/mailman/listinfo/cores">cores-bounces at opencores.org</A>] On Behalf Of <A HREF="http://www.opencores.org/mailman/listinfo/cores">cagliostro82 at gmail.com</A> Sent: Friday, May 20, 2005 1:07 AM To: <A HREF="http://www.opencores.org/mailman/listinfo/cores">cores at opencores.org</A> Subject: [oc] fft core with quartus 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 ... ???? Please someone help me!!! _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> You'll find a number of free video tutorials on Quartus II design here: http://www.demosondemand.com/dod/proddemos/vendors/pd_altera.aspx They're free and quite detailed. Hope this helps. -----Original Message----- From: cores-bounces at opencores.org [mailto:cores-bounces at opencores.org] On Behalf Of cagliostro82 at gmail.com Sent: Friday, May 20, 2005 1:07 AM To: cores at opencores.org Subject: [oc] fft core with quartus 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 ... ???? Please someone help me!!! _______________________________________________ http://www.opencores.org/mailman/listinfo/cores

fft core with quartus by Unknown on May 23, 2005			Not available!
<A HREF="http://www.opencores.org/mailman/listinfo/cores">cagliostro82 at gmail.com</A> wrote: [q] 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 ... ????[/q] 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 [q] Please someone help me!!! _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] cagliostro82 at gmail.com 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!!! _______________________________________________ http://www.opencores.org/mailman/listinfo/cores

fft core with quartus by Unknown on May 23, 2005			Not available!
Nope, It's not a problem with Quartus (I'm quite good at using it), simply the fft project is provided without any documentation!! ----- Original Message ----- From: Sheila Carey<<A HREF="http://www.opencores.org/mailman/listinfo/cores">sheilapcarey at d...</A>> To: Date: Fri May 20 15:34:08 CEST 2005 Subject: [oc] fft core with quartus [q] You'll find a number of free video tutorials on Quartus II design here: [/q] <A HREF="http://www.demosondemand.com/dod/proddemos/vendors/pd_altera.asp">http://www.demosondemand.com/dod/proddemos/vendors/pd_altera.asp</A> x [q] They're free and quite detailed. Hope this helps. -----Original Message----- From: cores-bounces at opencores.org [mailto:cores-bounces at opencores.org] On Behalf Of cagliostro82 at gmail.com Sent: Friday, May 20, 2005 1:07 AM To: cores at opencores.org Subject: [oc] fft core with quartus 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 ... ???? Please someone help me!!! _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] Nope, It's not a problem with Quartus (I'm quite good at using it), simply the fft project is provided without any documentation!! ----- Original Message ----- From: Sheila Careysheilapcarey at d...> To: Date: Fri May 20 15:34:08 CEST 2005 Subject: [oc] fft core with quartus You'll find a number of free video tutorials on Quartus II design here: http://www.demosondemand.com/dod/proddemos/vendors/pd_altera.asp x They're free and quite detailed. Hope this helps. -----Original Message----- From: cores-bounces at opencores.org [mailto:cores-bounces at opencores.org] On Behalf Of cagliostro82 at gmail.com Sent: Friday, May 20, 2005 1:07 AM To: cores at opencores.org Subject: [oc] fft core with quartus 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 ... ???? Please someone help me!!! _______________________________________________ http://www.opencores.org/mailman/listinfo/cores

fft core with quartus by Unknown on May 23, 2005			Not available!
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 ?? And why there are two data input?? Are they real and img part? Thanks in advance!! 2005/5/23, Tom Hawkins <<A HREF="http://www.opencores.org/mailman/listinfo/cores">tom at confluent.org</A>>: [q] <A HREF="http://www.opencores.org/mailman/listinfo/cores">cagliostro82 at gmail.com</A> wrote: [q]> 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 ... ????[/q] 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 [q]> Please someone help me!!! > > > _______________________________________________ > <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> > >[/q] _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] 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 ?? And why there are two data input?? Are they real and img part? Thanks in advance!! 2005/5/23, Tom Hawkins tom at confluent.org>: cagliostro82 at gmail.com 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!!! > > > _______________________________________________ > http://www.opencores.org/mailman/listinfo/cores > > _______________________________________________ http://www.opencores.org/mailman/listinfo/cores

fft core with quartus by Unknown on May 23, 2005			Not available!
Giovanni Germani wrote: [q] 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 ??[/q] The reset_i and enable_i control the whole machine -- you can tie them to 0 and 1 repectively. [q] And why there are two data input?? Are they real and img part?[/q] 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 [q] Thanks in advance!! 2005/5/23, Tom Hawkins <<A HREF="http://www.opencores.org/mailman/listinfo/cores">tom at confluent.org</A>>: [q]<A HREF="http://www.opencores.org/mailman/listinfo/cores">cagliostro82 at gmail.com</A> wrote: [q]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 ... ????[/q] 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 [q]Please someone help me!!! _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] 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 at confluent.org>: cagliostro82 at gmail.com 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!!! _______________________________________________ http://www.opencores.org/mailman/listinfo/cores _______________________________________________ http://www.opencores.org/mailman/listinfo/cores _______________________________________________ http://www.opencores.org/mailman/listinfo/cores

fft core with quartus by Unknown on May 23, 2005			Not available!
Very well!! Now I'll try!! Another question: if I open yout fft_test.v I'll get a block with only the clock as input and all the other signals as output, while the fft_testbench has no input or output at all... How can I use them?? 2005/5/23, Tom Hawkins <<A HREF="http://www.opencores.org/mailman/listinfo/cores">tom at confluent.org</A>>: [q] Giovanni Germani wrote: [q]> 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 ??[/q] The reset_i and enable_i control the whole machine -- you can tie them to 0 and 1 repectively. [q]> And why there are two data input?? Are they real and img part?[/q] 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 [q]> Thanks in advance!! > > 2005/5/23, Tom Hawkins <<A HREF="http://www.opencores.org/mailman/listinfo/cores">tom at confluent.org</A>>: > [q]><A HREF="http://www.opencores.org/mailman/listinfo/cores">cagliostro82 at gmail.com</A> wrote: > [q]>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 ... ????[/q] > >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 > > > [q]>Please someone help me!!! > > >_______________________________________________ ><A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> > >[/q] > >_______________________________________________ ><A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> >[/q] > > > _______________________________________________ > <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> > >[/q] _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] Very well!! Now I'll try!! Another question: if I open yout fft_test.v I'll get a block with only the clock as input and all the other signals as output, while the fft_testbench has no input or output at all... How can I use them?? 2005/5/23, Tom Hawkins tom at confluent.org>: 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 at confluent.org>: > >cagliostro82 at gmail.com 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!!! > > >_______________________________________________ >http://www.opencores.org/mailman/listinfo/cores > > > >_______________________________________________ >http://www.opencores.org/mailman/listinfo/cores > > > > _______________________________________________ > http://www.opencores.org/mailman/listinfo/cores > > _______________________________________________ http://www.opencores.org/mailman/listinfo/cores

fft core with quartus by Unknown on May 23, 2005			Not available!
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 <<A HREF="http://www.opencores.org/mailman/listinfo/cores">tom at confluent.org</A>>: [q] Giovanni Germani wrote: [q]> 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 ??[/q] The reset_i and enable_i control the whole machine -- you can tie them to 0 and 1 repectively. [q]> And why there are two data input?? Are they real and img part?[/q] 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 [q]> Thanks in advance!! > > 2005/5/23, Tom Hawkins <<A HREF="http://www.opencores.org/mailman/listinfo/cores">tom at confluent.org</A>>: > [q]><A HREF="http://www.opencores.org/mailman/listinfo/cores">cagliostro82 at gmail.com</A> wrote: > [q]>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 ... ????[/q] > >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 > > > [q]>Please someone help me!!! > > >_______________________________________________ ><A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> > >[/q] > >_______________________________________________ ><A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> >[/q] > > > _______________________________________________ > <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> > >[/q] _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] 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 at confluent.org>: 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 at confluent.org>: > >cagliostro82 at gmail.com 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!!! > > >_______________________________________________ >http://www.opencores.org/mailman/listinfo/cores > > > >_______________________________________________ >http://www.opencores.org/mailman/listinfo/cores > > > > _______________________________________________ > http://www.opencores.org/mailman/listinfo/cores > > _______________________________________________ http://www.opencores.org/mailman/listinfo/cores

fft core with quartus by Unknown on May 23, 2005			Not available!
Giovanni Germani wrote: [q] 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...[/q] Sync_in is a pulse. Set it high 1 cycle before data input, then drop it low on the next cycle. -Tom [q] 2005/5/23, Tom Hawkins <<A HREF="http://www.opencores.org/mailman/listinfo/cores">tom at confluent.org</A>>: [q]Giovanni Germani wrote: [q]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 ??[/q] The reset_i and enable_i control the whole machine -- you can tie them to 0 and 1 repectively. [q]And why there are two data input?? Are they real and img part?[/q] 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 [q]Thanks in advance!! 2005/5/23, Tom Hawkins <<A HREF="http://www.opencores.org/mailman/listinfo/cores">tom at confluent.org</A>>: [q]<A HREF="http://www.opencores.org/mailman/listinfo/cores">cagliostro82 at gmail.com</A> wrote: [q]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 ... ????[/q] 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 [q]Please someone help me!!! _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] _______________________________________________ <A HREF="http://www.opencores.org/mailman/listinfo/cores">http://www.opencores.org/mailman/listinfo/cores</A> [/q] 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... Sync_in is a pulse. Set it high 1 cycle before data input, then drop it low on the next cycle. -Tom 2005/5/23, Tom Hawkins tom at confluent.org>: 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 at confluent.org>: cagliostro82 at gmail.com 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!!! _______________________________________________ http://www.opencores.org/mailman/listinfo/cores _______________________________________________ http://www.opencores.org/mailman/listinfo/cores _______________________________________________ http://www.opencores.org/mailman/listinfo/cores _______________________________________________ http://www.opencores.org/mailman/listinfo/cores _______________________________________________ http://www.opencores.org/mailman/listinfo/cores

RE: fft core with quartus by vitorcastelo on Feb 2, 2017			vitorcastelo Posts: 1 Joined: Feb 1, 2017 Last seen: Feb 6, 2017
I am trying simulate the cf_fft_4096_16 bits. However, I don't know how the real and imaginary part are represented. Is the hardware using Q15 format? Is it using fixed point or floating point operations? I am trying simulate the cf_fft_4096_16 bits. However, I don't know how the real and imaginary part are represented. Is the hardware using Q15 format? Is it using fixed point or floating point operations?

RE: fft core with quartus by diemelbecker on Apr 30, 2020			diemelbecker Posts: 1 Joined: Apr 17, 2020 Last seen: May 17, 2020
Hey Guys, i want to use the cf fft core too. But have similiar problems as sisucussed here with the core. So I didnt geht it running. Following my config: enable_i: always "1" reset_i: always "0" sync_i: one cycle before input date "1" then "0" data_1_i: 0x000F 20ns, 0x0FFF 60ns -r 80ns data_0_i: 0x000F 20ns, 0x0FFF 60ns -r 80ns With it i didnt get an output signal and the sync-o is always "0" too. Maybe someone could help me. Hey Guys, i want to use the cf fft core too. But have similiar problems as sisucussed here with the core. So I didnt geht it running. Following my config: enable_i: always "1" reset_i: always "0" sync_i: one cycle before input date "1" then "0" data_1_i: 0x000F 20ns, 0x0FFF 60ns -r 80ns data_0_i: 0x000F 20ns, 0x0FFF 60ns -r 80ns With it i didnt get an output signal and the sync-o is always "0" too. Maybe someone could help me.

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