cancel
Showing results for 
Search instead for 
Did you mean: 
Highlighted
Visitor
Visitor
150 Views
Registered: ‎02-16-2019

FFT IP Core performance for Artix

Hi,

 

I want to use FFT IP in my design with Artix-7.

The target clock is 340MHz and I wonder if FFT can operate at the rate in Artix.

The below link doesn't include Artix.

https://www.xilinx.com/support/documentation/ip_documentation/ru/xfft.html

 

Does anyone know the information of FFT for Artix?

0 Kudos
2 Replies
Highlighted
119 Views
Registered: ‎01-22-2015

Re: FFT IP Core performance for Artix

@hiroaki4625 

FFT performance with the Kintex-7 can be adjusted to approximate performance with the Artix-7 as follows:

The post found <here> indicates there is about a 15% speed reduction when going from Kintex-7 to Artix-7, in the same speed grade.

You can also see this approximate 15% figure by comparing values of FMAX (eg. for DSP48 and BUFG) in the datasheets (DS182 and DS181) for the Kintex-7 and Artix-7.

The FFT performance shown at the site your referenced is for a speed grade-1 Kintex-7.   Again, looking at FMAX in the datasheets for the Kintex-7 and Artix-7, it seems that a speed grade-3 Artix-7 is nearly as fast as a speed grade-1 Kintex-7.

..but I’m doing a lot of approximating.

It is best if you try a simple design with the FFT core and with your Artix-7 in Vivado and see if the design passes timing analysis at your target frequency of 340MHz.  Note that the FFT has many settings that affect FMAX for the core. 

PG109 is a very well written Xilinx document that describes the FFT core.

Cheers,
Mark

Highlighted
Visitor
Visitor
50 Views
Registered: ‎02-16-2019

Re: FFT IP Core performance for Artix

Thak you for reply.

 

I understand the performance of Artix-7.

I tried implementing the design that includes only FFT IP core, then it failed.

It seems FFT IP core doesnt operate at 340MHz for Artix-7.

 

Thanks anyway.

0 Kudos