Polyphase_filter_vhdl/tree_fir.vhd

LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
USE work.POLY_FIR_PKG.ALL;

ENTITY TREE_FIR IS
  PORT(	i_clk 	 : IN std_logic;
        i_coeffs : IN vect_fir_coeffs_in;
        i_data 	 : IN matrix_reg_data_out;
        o_data	 : OUT vect_fir_data_out
        );
END TREE_FIR;

ARCHITECTURE Simple_Fir OF TREE_FIR IS

  SIGNAL partial_fir_out : vect_fir_adder_data_out := (OTHERS => (OTHERS => '0'));

BEGIN

  -- purpose: wiring: instanciation of each partial FIR to make 1 FIR
  partial_fir_for : FOR i IN 0 TO cst_nb_parallel_firs-1 GENERATE
    partial_fir_inst : ENTITY work.PARTIAL_FIR(Adder_Tree)
      PORT MAP(	i_clk  	 => i_clk,
                i_coeffs => i_coeffs,
                i_data 	 => i_data(i),
                o_data	 => partial_fir_out(i)
		);
    o_data(i)<= partial_fir_out(i)(cst_w_fir_adder_out-1 DOWNTO cst_w_fir_adder_out-cst_w_out);
  END GENERATE partial_fir_for;


END Simple_Fir;