fft_fun.v

调用FPGA的IP核实现FFT运算

`timescale 1ns / 1ps
//////////////////////////////////////////////////////////////////////////////////
// Company: 
// Engineer: 
// 
// Create Date:    09:50:02 06/04/2008 
// Design Name: 
// Module Name:    fft_fun 
// Project Name: 
// Target Devices: 
// Tool versions: 
// Description: 
//
// Dependencies: 
//
// Revision: 
// Revision 0.01 - File Created
// Additional Comments: 
//
//////////////////////////////////////////////////////////////////////////////////
module fft_fun(din_re,din_im,clk,rst,data_load_start,dout_re,dout_im,blk,data_valid);

		//input
		input          clk;
		input          rst;
		input          data_load_start;
		input  [7 : 0] din_re;
		input  [7 : 0] din_im;
		
		//output
		output [7 : 0] dout_re;
		output [7 : 0] dout_im;
		output          data_valid;
      output [4 : 0] blk;

		//其他配置信号
		wire rfd;		
		reg unload;
		wire edone;
		wire done;
		wire core_busy;		
		wire [13 : 0] din_index;
		wire [13 : 0] dout_index;

      parameter  VCC = 1'b1;
		parameter  GND = 1'b0;
		
fft64 fftdot64(
				//input
			  .clk(clk),  
			  .sclr(rst), 
			  .start(data_load_start),
			  .xn_re(din_re),
			  .xn_im(din_im),
			  
				//output
			  .xk_re(dout_re),
			  .xk_im(dout_im),
           .blk_exp(blk),		
			  .dv(data_valid), 
			  
			  //other
			  .ce(VCC),
			  .fwd_inv_we(VCC),  
			  .fwd_inv(VCC), 
			  .rfd(rfd),
			  .unload(unload),
			  .edone(edone),   
			  .done(done), 
			  .busy(core_busy), 			  
			  .xn_index(din_index), 
			  .xk_index(dout_index)
			  
			  );   
			  
			  /*
/////////////////////////////////////////////////////////////////
always @ (posedge clk or posedge rst)
	begin
		if(rst)
			begin
			  unload <= 0;
			  din_re  <= 0;
			  din_im  <= 0;
			end
	end
/////////////////////////////////////////////////////////////////////
always @ (posedge clk or posedge rst)
	begin
		if(rst)
			begin
				dout_re <= 0;
				dout_im <= 0;
			end
	end
*/
endmodule