FPGA Intellectual Property
PCI Express*, Networking and Connectivity, Memory Interfaces, DSP IP, and Video IP
Intel Support hours are Monday-Fridays, 8am-5pm PST, except Holidays. Thanks to our community members who provide support during our down time or before we get to your questions. We appreciate you!

Need Forum Guidance? Click here
Search our FPGA Knowledge Articles here.
5988 Discussions

Does Altera's FFT Core support backpressure?

Honored Contributor II

Hi, all. 

I'm using FFT Core (Variable streaming, 256 points). I want to control datastream via signal "source_ready", but FFT stall after 2 frames. 

From fft_ug: 

"source_ready ... Asserted by the downstream module if it is able to 

accept data." What I doing wrong? 

Here SignalTap snapshot (_http_://img834.imageshack.us/img834/4803/fftstap.png)
0 Kudos
0 Replies