Subversion Repositories spdif_interface

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----                                                              ----

---- WISHBONE SPDIF IP Core                                       ----

----                                                              ----

---- This file is part of the SPDIF project                       ----

---- http://www.opencores.org/cores/spdif_interface/              ----

----                                                              ----

---- Description                                                  ----

---- SPDIF receiver component package.                            ----

----                                                              ----

----                                                              ----

---- To Do:                                                       ----

---- -                                                            ----

----                                                              ----

---- Author(s):                                                   ----

---- - Geir Drange, gedra@opencores.org                           ----

----                                                              ----

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----                                                              ----

---- Copyright (C) 2004 Authors and OPENCORES.ORG                 ----

----                                                              ----

---- This source file may be used and distributed without         ----

---- restriction provided that this copyright statement is not    ----

---- removed from the file and that any derivative work contains  ----

---- the original copyright notice and the associated disclaimer. ----

----                                                              ----

---- This source file is free software; you can redistribute it   ----

---- and/or modify it under the terms of the GNU Lesser General   ----

---- Public License as published by the Free Software Foundation; ----

---- either version 2.1 of the License, or (at your option) any   ----

---- later version.                                               ----

----                                                              ----

---- This source is distributed in the hope that it will be       ----

---- useful, but WITHOUT ANY WARRANTY; without even the implied   ----

---- warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ----

---- PURPOSE. See the GNU Lesser General Public License for more  ----

---- details.                                                     ----

----                                                              ----

---- You should have received a copy of the GNU Lesser General    ----

---- Public License along with this source; if not, download it   ----

---- from http://www.opencores.org/lgpl.shtml                     ----

----                                                              ----

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--

-- CVS Revision History

--

-- $Log: not supported by cvs2svn $

-- Revision 1.6  2004/06/23 18:10:17  gedra

-- Added Wishbone bus cycle decoder.

--

-- Revision 1.5  2004/06/16 19:03:45  gedra

-- Changed status reg. declaration

--

-- Revision 1.4  2004/06/13 18:08:09  gedra

-- Added frame decoder and sample extractor

--

-- Revision 1.3  2004/06/10 18:57:36  gedra

-- Cleaned up lint warnings.

--

-- Revision 1.2  2004/06/09 19:24:50  gedra

-- Added dual port ram.

--

-- Revision 1.1  2004/06/07 18:06:00  gedra

-- Receiver component declarations.

--

--

library IEEE;

use IEEE.std_logic_1164.all;

package rx_package is

-- type declarations

  type bus_array is array (0 to 7) of std_logic_vector(31 downto 0);

-- components

  component rx_ver_reg

    generic (DATA_WIDTH: integer;

             ADDR_WIDTH: integer;

             CH_ST_CAPTURE: integer);

    port (

      ver_rd: in std_logic; -- version register read

      ver_dout: out std_logic_vector(DATA_WIDTH - 1 downto 0)); -- read data

  end component;

  component gen_control_reg

    generic (DATA_WIDTH: integer;

             -- note that this vector is (0 to xx), reverse order

             ACTIVE_BIT_MASK: std_logic_vector);

    port (

      clk: in std_logic;         -- clock  

      rst: in std_logic; -- reset

      ctrl_wr: in std_logic; -- control register write  

      ctrl_rd: in std_logic; -- control register read

      ctrl_din: in std_logic_vector(DATA_WIDTH - 1 downto 0);

      ctrl_dout: out std_logic_vector(DATA_WIDTH - 1 downto 0);

      ctrl_bits: out std_logic_vector(DATA_WIDTH - 1 downto 0));

  end component;

  component rx_status_reg

    generic (DATA_WIDTH: integer);

    port (

      wb_clk_i: in std_logic;             -- clock

      status_rd: in std_logic;            -- status register read

      lock: in std_logic;                 -- signal lock status

      chas: in std_logic;                 -- channel A or B select

      rx_frame_start: in std_logic;       -- start of frame signal

      ch_data: in std_logic;              -- channel status/user data

      cs_a_en: in std_logic;              -- channel status ch. A enable

      cs_b_en: in std_logic;              -- channel status ch. B enable

      status_dout: out std_logic_vector(DATA_WIDTH - 1 downto 0));

  end component;

  component gen_event_reg

    generic (DATA_WIDTH: integer);

    port (

      clk: in std_logic;         -- clock  

      rst: in std_logic; -- reset

      evt_wr: in std_logic; -- event register write     

      evt_rd: in std_logic; -- event register read

      evt_din: in std_logic_vector(DATA_WIDTH - 1 downto 0); -- write data

      event: in std_logic_vector(DATA_WIDTH - 1 downto 0); -- event vector

      evt_mask: in std_logic_vector(DATA_WIDTH - 1 downto 0); -- irq mask

      evt_en: in std_logic;               -- irq enable

      evt_dout: out std_logic_vector(DATA_WIDTH - 1 downto 0); -- read data

      evt_irq: out std_logic); -- interrupt  request

  end component;

  component rx_cap_reg

    port (

      clk: in std_logic;                  -- clock

      rst: in std_logic; -- reset

      cap_ctrl_wr: in std_logic; -- control register write      

      cap_ctrl_rd: in std_logic; -- control register read

      cap_data_rd: in std_logic;          -- data register read

      cap_din: in std_logic_vector(31 downto 0); -- write data

      frame_rst: in std_logic; -- start of frame signal

      ch_data: in std_logic;  -- channel status/user data

      ud_a_en: in std_logic;            -- user data ch. A enable

      ud_b_en: in std_logic;              -- user data ch. B enable

      cs_a_en: in std_logic;              -- channel status ch. A enable

      cs_b_en: in std_logic;              -- channel status ch. B enable

      cap_dout: out std_logic_vector(31 downto 0); -- read data

      cap_evt: out std_logic);             -- capture event (interrupt)

  end component;

  component rx_phase_det

    generic (WISHBONE_FREQ: natural := 33);   -- WishBone frequency in MHz

    port (

      wb_clk_i: in std_logic;

      rxen: in std_logic;

      spdif: in std_logic;

      lock: out std_logic;

      rx_data: out std_logic;

      rx_data_en: out std_logic;

      rx_block_start: out std_logic;

      rx_frame_start: out std_logic;

      rx_channel_a: out std_logic;

      rx_error: out std_logic;

      ud_a_en: out std_logic;              -- user data ch. A enable

      ud_b_en: out std_logic;              -- user data ch. B enable

      cs_a_en: out std_logic;              -- channel status ch. A enable

      cs_b_en: out std_logic);             -- channel status ch. B enable);            

  end component;

  component dpram

    generic (DATA_WIDTH: positive;

             RAM_WIDTH: positive);

    port (

      clk: in std_logic;

      rst: in std_logic; -- reset is optional, not used here

      din: in std_logic_vector(DATA_WIDTH - 1 downto 0);

      wr_en: in std_logic;

      rd_en: in std_logic;

      wr_addr: in std_logic_vector(RAM_WIDTH - 1 downto 0);

      rd_addr: in std_logic_vector(RAM_WIDTH - 1 downto 0);

      dout: out std_logic_vector(DATA_WIDTH - 1 downto 0));

  end component;

  component rx_decode

    generic (DATA_WIDTH: integer range 16 to 32;

             ADDR_WIDTH: integer range 8 to 64);

    port (

      wb_clk_i: in std_logic;

      conf_rxen: in std_logic;

      conf_sample: in std_logic;

      conf_valid: in std_logic;

      conf_mode: in std_logic_vector(3 downto 0);

      conf_blken: in std_logic;

      conf_valen: in std_logic;

      conf_useren: in std_logic;

      conf_staten: in std_logic;

      conf_paren: in std_logic;

      lock: in std_logic;

      rx_data: in std_logic;

      rx_data_en: in std_logic;

      rx_block_start: in std_logic;

      rx_frame_start: in std_logic;

      rx_channel_a: in std_logic;

      wr_en: out std_logic;

      wr_addr: out std_logic_vector(ADDR_WIDTH - 2 downto 0);

      wr_data: out std_logic_vector(DATA_WIDTH - 1 downto 0);

      stat_paritya: out std_logic;

      stat_parityb: out std_logic;

      stat_lsbf: out std_logic;

      stat_hsbf: out std_logic);

  end component;

  component rx_wb_decoder

    generic (DATA_WIDTH: integer;

             ADDR_WIDTH: integer);

    port (

      wb_clk_i: in std_logic;             -- wishbone clock

      wb_rst_i: in std_logic;             -- reset signal

      wb_sel_i: in std_logic;             -- select input

      wb_stb_i: in std_logic;             -- strobe input

      wb_we_i: in std_logic;              -- write enable

      wb_cyc_i: in std_logic;             -- cycle input

      wb_bte_i: in std_logic_vector(1 downto 0);  -- burts type extension

      wb_adr_i: in std_logic_vector(ADDR_WIDTH - 1 downto 0);  -- address

      wb_cti_i: in std_logic_vector(2 downto 0);  -- cycle type identifier

      data_out: in std_logic_vector(DATA_WIDTH - 1 downto 0); -- internal bus

      wb_ack_o: out std_logic;            -- acknowledge

      wb_dat_o: out std_logic_vector(DATA_WIDTH - 1 downto 0);  -- data out

      version_rd: out std_logic;          -- Version register read 

      config_rd: out std_logic;           -- Config register read

      config_wr: out std_logic;           -- Config register write

      status_rd: out std_logic;           -- Status register read

      intmask_rd: out std_logic;          -- Interrupt mask register read

      intmask_wr: out std_logic;          -- Interrupt mask register write

      intstat_rd: out std_logic;          -- Interrupt status register read

      intstat_wr: out std_logic;          -- Interrupt status register read

      mem_rd: out std_logic;              -- Sample memory read

      mem_addr: out std_logic_vector(ADDR_WIDTH - 2 downto 0);  -- memory addr.

      ch_st_cap_rd: out std_logic_vector(7 downto 0);  -- Ch. status cap. read

      ch_st_cap_wr: out std_logic_vector(7 downto 0);  -- Ch. status cap. write

      ch_st_data_rd: out std_logic_vector(7 downto 0)); -- Ch. status data read

  end component;

end rx_package;