Subversion Repositories i2s_interface

----------------------------------------------------------------------
----                                                              ----
---- WISHBONE I2S Interface IP Core                               ----
----                                                              ----
---- This file is part of the I2S Interface project               ----
---- http://www.opencores.org/cores/i2s_interface/                ----
----                                                              ----
---- Description                                                  ----
---- I2S transmitter component declarations.                      ----
----                                                              ----
---- To Do:                                                       ----
---- -                                                            ----
----                                                              ----
---- Author(s):                                                   ----
---- - Geir Drange, gedra@opencores.org                           ----
----                                                              ----
----------------------------------------------------------------------
----                                                              ----
---- 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 General          ----
---- Public License as published by the Free Software Foundation; ----
---- either version 2.0 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 General Public License for more details.----
----                                                              ----
---- You should have received a copy of the GNU General           ----
---- Public License along with this source; if not, download it   ----
---- from http://www.gnu.org/licenses/gpl.txt                     ----
----                                                              ----
----------------------------------------------------------------------
--
-- CVS Revision History
--
-- $Log: not supported by cvs2svn $
-- Revision 1.2  2004/08/06 18:55:43  gedra
-- De-linting.
--
-- Revision 1.1  2004/08/04 14:29:10  gedra
-- Transmitter component declarations.
--
--
--
 
library ieee;
use ieee.std_logic_1164.all;
 
package tx_i2s_pack is
 
-- components used in the transmitter
 
   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 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 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 i2s_version
      generic (DATA_WIDTH : integer;
               ADDR_WIDTH : integer;
               IS_MASTER  : integer);
      port (
         ver_rd   : in  std_logic;      -- version register read
         ver_dout : out std_logic_vector(DATA_WIDTH - 1 downto 0));
   end component;
 
   component tx_i2s_wbd
      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_cti_i   : in  std_logic_vector(2 downto 0);  -- cycle type identifier
         wb_adr_i   : in  std_logic_vector(ADDR_WIDTH - 1 downto 0);  -- address
         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
         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_wr     : out std_logic);   -- Sample memory write
   end component;
 
   component i2s_codec
      generic (DATA_WIDTH  : integer;
               ADDR_WIDTH  : integer;
               IS_MASTER   : integer range 0 to 1;
               IS_RECEIVER : integer range 0 to 1);
      port (
         wb_clk_i     : in  std_logic;  -- wishbone clock
         conf_res     : in  std_logic_vector(5 downto 0);  -- sample resolution
         conf_ratio   : in  std_logic_vector(7 downto 0);  -- clock divider ratio
         conf_swap    : in  std_logic;  -- left/right sample order
         conf_en      : in  std_logic;  -- transmitter/recevier enable
         i2s_sd_i     : in  std_logic;  -- I2S serial data input
         i2s_sck_i    : in  std_logic;  -- I2S clock input
         i2s_ws_i     : in  std_logic;  -- I2S word select input
         sample_dat_i : in  std_logic_vector(DATA_WIDTH - 1 downto 0);  -- audio data
         sample_dat_o : out std_logic_vector(DATA_WIDTH - 1 downto 0);  -- audio data
         mem_rdwr     : out std_logic;  -- sample buffer read/write
         sample_addr  : out std_logic_vector(ADDR_WIDTH - 2 downto 0);  -- address
         evt_hsbf     : out std_logic;  -- higher sample buf empty event
         evt_lsbf     : out std_logic;  -- lower sample buf empty event
         i2s_sd_o     : out std_logic;  -- I2S serial data output
         i2s_sck_o    : out std_logic;  -- I2S clock output
         i2s_ws_o     : out std_logic);  -- I2S word select output
   end component;
 
end tx_i2s_pack;