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Recent content by habbas33

  1. H

    transformation length problem of FFT in VHDL

    Hi. I am using xilinx FFT IP cores for FFT transformation but the problem is that FFT IP core takes fixed transformations length of 64,128,256,512,... is it possible to transform length of 50 , 100 , 126 etc. ie other than the available transform length of the iP core
  2. H

    question regarding usage of Generic in VHDL

    yeah but this is not my code and it is working for 128 bit. I am not sure why that is the reason I put the question...
  3. H

    question regarding usage of Generic in VHDL

    hi I am little confused regarding the generic usage in vhdl... I am trying to understand some reference code and I found this... generic ( APPDATA_WIDTH : integer := 64 ); port ( clk0,rst0 :in std_logic; rd_data_out : out std_logic_vector(APPDATA_WIDTH-1 downto 0)...
  4. H

    Program FPGA without iMPACT

    Hi... I have a bit file which I use to program FPGA using iMPACT.. but now I want to program FPGA using my GUI Interface I dont want to open iMPACT or install iMPACT on other PC's is it possible to download bit file directly by using c++ coding... any example or material is highly welcomed..
  5. H

    problem with FFT IP core

    I have converted the system on matlab into fixed point one but still having the same problem
  6. H

    problem with FFT IP core

    i dont think so because this real fxn is used to get the real component from the complex FFT result. the fixed point result from the IP core is converted into integer and read into matlab for plotting
  7. H

    problem with FFT IP core

    I have generated FFT ouput from FFT IPcore 7.1 for a signal and i wanted to match it with the FFT result from matlab. as shown the result of both outputs are normalised to compare butl i found a little missmatch with the result. can any one indicate what is the reason for this mismatch...
  8. H

    sqt function required for rms calculation

    to get result in fraction, cordic can only take 1 bit integer... can u please explain the how can i use look up table method because i dont have known values of inputs and ouputs
  9. H

    sqt function required for rms calculation

    i want to calculate rms values of some signals. xrms = sqrt{ 1/n*( x_1^2 + x_2^2 + ...... + x_n^2 ) }. but the problem is sqrt operation. i have used cordac but it does not gives precise values u can either give integers or fractions. I have also tried sqrt function from fixed_alg_ug pkg but...

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