Subversion Repositories systemc_cordic

// cordic.h: header file

/********************************************************************

//

// Module:

//   Cordic Engine Pipeline Stage

//

// Interface:

//   Registered input, non-registered output

//

//

// Authors:     Winnie Cheng <wwcheng@stanford.edu>,

//              Peter Wu <peter5@stanford.edu>

//

 *********************************************************************/

#include "systemc.h"

#include "opcode.h"

SC_MODULE(cordic) {

    // Clock Declaration

    sc_in_clk clk;

    // Input ports Declaration

    sc_in<bool> start;          // enables the stage

    sc_in<bool> reset;

    // Input data - previous stage results

    sc_in<short> in_x;

    sc_in<short> in_y;

    sc_in<short> in_acc_phase;

    // Input data - propagated instruction info

    sc_in<sc_uint<UNIT_SEL_WIDTH> > in_opcode;

    sc_in<short> in_desired_phase;

    // Input data - stage parametrization

    sc_in<short> stage_num;

    sc_in<short> tablep;

    sc_in<short> tableh;

    // Output ports Declaration

    sc_out<bool> done;

    // Output data - results of this stage

    sc_out<short> out_x;

    sc_out<short> out_y;

    sc_out<short> out_acc_phase;

    // Output data - propagated instruction info 

    sc_out<sc_uint<UNIT_SEL_WIDTH> > out_opcode;

    sc_out<short> out_desired_phase;

    // Declare implementation functions

    void cordic_process();

    // Constructor

    SC_CTOR(cordic)

    {

        // Register processes and define active clock edge

        SC_CTHREAD(cordic_process, clk.pos());

        // Watching for global reset

        watching(reset.delayed()==true);

    }

}; // end module cordic