IIR not working on system genrator

[lordy]

Im trying to implement 2nd order IIR filter ( direct form 1) by xilinx block set in system generator but on output im getting noise.

same filter i implemented in matlab simulink (without using xilinx block) it is working fine.
I checked till feed forward path the output of matlab simulink and system generator both are same. i think that some problem in feed back path.


Any idea whats going wrong? it will be great help

thanks in advance

:-o

 

[xtcx]

Which version are you using?. I have used some FIR from xilinx sys gen. However did you meet proper input and output sample rate?.

 

[lordy]

im using xilinx 13.1 and matlab 2010a. I checked all the sample rate in my system but still its not working(problem in feed back). I implemented FIR filters they are working fine. today i will attache my .mdi file.

Thanks for support