Subversion Repositories spi_boot

-------------------------------------------------------------------------------

--

-- SD/MMC Bootloader

-- Chip toplevel

--

-- $Id: chip-e.vhd 77 2009-04-01 19:53:14Z arniml $

--

-- Copyright (c) 2005, Arnim Laeuger (arniml@opencores.org)

--

-- All rights reserved, see COPYING.

--

-- Redistribution and use in source and synthezised forms, with or without

-- modification, are permitted provided that the following conditions are met:

--

-- Redistributions of source code must retain the above copyright notice,

-- this list of conditions and the following disclaimer.

--

-- Redistributions in synthesized form must reproduce the above copyright

-- notice, this list of conditions and the following disclaimer in the

-- documentation and/or other materials provided with the distribution.

--

-- Neither the name of the author nor the names of other contributors may

-- be used to endorse or promote products derived from this software without

-- specific prior written permission.

--

-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

-- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

-- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE

-- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

-- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

-- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

-- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

-- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

-- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

-- POSSIBILITY OF SUCH DAMAGE.

--

-- Please report bugs to the author, but before you do so, please

-- make sure that this is not a derivative work and that

-- you have the latest version of this file.

--

-- The latest version of this file can be found at:

--      http://www.opencores.org/projects.cgi/web/spi_boot/overview

--

-------------------------------------------------------------------------------

library ieee;

use ieee.std_logic_1164.all;

entity chip is

  port (

    -- System Interface -------------------------------------------------------

    clk_i          : in  std_logic;

    reset_i        : in  std_logic;

    set_sel_n_i    : in  std_logic_vector(3 downto 0);

    -- SD Card Interface ------------------------------------------------------

    spi_clk_o      : out std_logic;

    spi_cs_n_o     : out std_logic;

    spi_data_in_i  : in  std_logic;

    spi_data_out_o : out std_logic;

    -- FPGA Configuration Interface -------------------------------------------

    start_i        : in  std_logic;

    mode_i         : in  std_logic;

    config_n_o     : out std_logic;

    detached_o     : out std_logic;

    cfg_init_n_i   : in  std_logic;

    cfg_done_i     : in  std_logic;

    dat_done_i     : in  std_logic;

    cfg_clk_o      : out std_logic;

    cfg_dat_o      : out std_logic

  );

end chip;