Subversion Repositories viterbi_decoder_axi4s

--!

--! Copyright (C) 2011 - 2014 Creonic GmbH

--!

--! This file is part of the Creonic Viterbi Decoder, which is distributed

--! under the terms of the GNU General Public License version 2.

--!

--! @file

--! @brief  Global types for the Viterbi decoder

--! @author Markus Fehrenz

--! @date   2011/07/04

--!

--! @details Most types are shared and used in different context.

--!          Changing single types should be done with adding an additional type.

--!

library ieee;

use ieee.std_logic_1164.all;

use ieee.numeric_std.all;

library dec_viterbi;

use dec_viterbi.pkg_param.all;

use dec_viterbi.pkg_param_derived.all;

package pkg_types is

        -- Parity structure: p1_bit, p2_bit, ..., pN_bit

        type t_input_block is array (NUMBER_PARITY_BITS - 1 downto 0) of signed(BW_LLR_INPUT - 1 downto 0);

        -- Types are used for bulk information to ACS and branch unit.

        type t_node_s is array (NUMBER_TRELLIS_STATES - 1 downto 0) of signed(BW_MAX_PROBABILITY - 1 downto 0);

        type t_node   is array (NUMBER_TRELLIS_STATES - 1 downto 0) of std_logic_vector(BW_MAX_PROBABILITY - 1 downto 0);

        type t_branch is array (NUMBER_BRANCH_UNITS - 1 downto 0)   of std_logic_vector(BW_BRANCH_RESULT - 1 downto 0);

        -- RAM Data

        type t_ram_rd_data is array (1 downto 0) of std_logic_vector(NUMBER_TRELLIS_STATES - 1 downto 0);

end package pkg_types;