_primary.vhd

Viterbi decoder source code

library verilog;
use verilog.vl_types.all;
entity apex20ke_pll is
    generic(
        operation_mode   : string  := "normal";
        simulation_type  : string  := "timing";
        clk0_multiply_by : integer := 1;
        clk0_divide_by   : integer := 1;
        clk1_multiply_by : integer := 1;
        clk1_divide_by   : integer := 1;
        input_frequency  : integer := 1000;
        phase_shift      : integer := 0;
        effective_phase_shift : integer := 0;
        effective_clk0_delay : integer := 0;
        effective_clk1_delay : integer := 0;
        lock_high        : integer := 1;
        lock_low         : integer := 1;
        invalid_lock_multiplier : integer := 5;
        valid_lock_multiplier : integer := 5
    );
    port(
        clk             : in     vl_logic;
        fbin            : in     vl_logic;
        ena             : in     vl_logic;
        clk0            : out    vl_logic;
        clk1            : out    vl_logic;
        locked          : out    vl_logic
    );
end apex20ke_pll;