UPGRADE YOUR BROWSER

We have detected your current browser version is not the latest one. Xilinx.com uses the latest web technologies to bring you the best online experience possible. Please upgrade to a Xilinx.com supported browser:Chrome, Firefox, Internet Explorer 11, Safari. Thank you!

AR# 32622

LogiCORE Fast Fourier Transform (FFT)v6.0 - Why the latency of later version is more than previous ones

Description

I upgrade my FFT design to the latest version, but the later version needs more clock cycles to get output.

What is the reason for this discrepancy?

Is it possible for me to improve it?

解决方案

Since version 4.0 of the FFT Core, there was more pipelining due to the introduction of the DSP48s than the previously used MULT18x18. Therefore, there has been a change in the latency. If this is an issue, then it might be necessary to try a different architecture and/or change the parameters.

AR# 32622
创建日期 05/13/2009
Last Updated 12/15/2012
状态 Active
Type 综合文章