Subversion Repositories modular_oscilloscope

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--| Modular Oscilloscope

--| UNSL - Argentine

--|

--| File: ctrl_pkg.vhd

--| Version: 0.1

--| Tested in: Actel A3PE1500

--|-------------------------------------------------------------------------------------------------

--| Description:

--|   CONTROL - Package

--|   Package for instantiate Control modules.

--|   

--|-------------------------------------------------------------------------------------------------

--| File history:

--|   0.01  | jul-2009 | First incomplete

--|   0.1   | aug-2009 | First incomplete

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

--| Copyright © 2009, Facundo Aguilera.

--|

--| This VHDL design file is an open design; you can redistribute it and/or

--| modify it and/or implement it after contacting the author.

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

-- Bloque completo

library IEEE;

use IEEE.STD_LOGIC_1164.ALL;

use ieee.math_real.all;

package ctrl_pkg is

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

  -- Componentes  

  component generic_decoder is

    generic(

      INPUT_WIDTH: integer := 5 -- Input with for decoder (decodes INPUT_WIDTH to 2^INPUT_WIDTH)

    );

    Port(

      enable_I:   in std_logic;

      data_I:     in std_logic_vector(INPUT_WIDTH-1 downto 0);

      decoded_O:  out std_logic_vector( integer(2**real(INPUT_WIDTH))-1  downto 0)

    );

  end component generic_decoder;

  component generic_counter is

    generic(

      OUTPUT_WIDTH: integer := 32 -- Output width for counter.

    );

    port(

      clk_I:    in  std_logic;

      count_O:  out std_logic_vector( OUTPUT_WIDTH  downto 0);

      reset_I:  in  std_logic;

      enable_I: in  std_logic

    );

  end component generic_counter;

  component ctrl_output_manager is

  generic(

      MEM_ADD_WIDTH: integer :=  14

    );

    port(

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

      -- MASTER (to memory) 

      DAT_I_mem: in std_logic_vector (15 downto 0);

      --DAT_O_mem: out std_logic_vector (15 downto 0);

      ADR_O_mem: out std_logic_vector (MEM_ADD_WIDTH - 1  downto 0);

      CYC_O_mem: out std_logic;

      STB_O_mem: out std_logic;

      ACK_I_mem: in std_logic ;

      WE_O_mem:  out std_logic;

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

      -- SLAVE (to I/O ports) 

      --DAT_I_port: in std_logic_vector (15 downto 0);

      DAT_O_port: out std_logic_vector (15 downto 0);

      --ADR_I_port: in std_logic_vector (7 downto 0); 

      CYC_I_port: in std_logic;

      STB_I_port: in std_logic;

      ACK_O_port: out std_logic ;

      WE_I_port:  in std_logic;

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

      -- Common signals 

      RST_I: in std_logic;

      CLK_I: in std_logic;

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

      -- Internal

      load_I:             in std_logic;

      -- load initial address

      enable_I:           in std_logic;

      -- continue reading from the actual address ('0' means pause, '1' means continue)

      initial_address_I:  in std_logic_vector (MEM_ADD_WIDTH - 1 downto 0);

      -- buffer starts and ends here 

      biggest_address_I:  in std_logic_vector (MEM_ADD_WIDTH - 1 downto 0);

      -- when the buffer arrives here, address is changed to 0 (buffer size)

      pause_address_I:    in std_logic_vector (MEM_ADD_WIDTH - 1 downto 0);

      -- address wich is being writed by control

      finish_O:           out std_logic

      -- this is set when communication ends and remains until next restart or actual address change                                                    

    );

  end component ctrl_output_manager;

  component ctrl_memory_writer is

    generic(

      MEM_ADD_WIDTH: integer :=  14

    );

    port(

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

      -- to memory

      DAT_O_mem: out std_logic_vector (15 downto 0);

      ADR_O_mem: out std_logic_vector (MEM_ADD_WIDTH - 1  downto 0);

      CYC_O_mem: out std_logic;

      STB_O_mem: out std_logic;

      ACK_I_mem: in std_logic ;

      WE_O_mem:  out std_logic;

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

      -- to acquistion module

      DAT_I_adc: in std_logic_vector (15 downto 0);

      -- Using an address generator, commented

      -- ADR_O_adc: out std_logic_vector (ADC_ADD_WIDTH - 1  downto 0); 

      CYC_O_adc: out std_logic;

      STB_O_adc: out std_logic;

      ACK_I_adc: in std_logic ;

      WE_O_adc:  out std_logic;

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

      -- Common signals 

      RST_I: in std_logic;

      CLK_I: in std_logic;

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

      -- Internal

      -- reset memory address to 0

      reset_I:            in std_logic;

      -- read in clk edge from the actual address ('0' means pause, '1' means continue)

      enable_I:           in std_logic;

      final_address_I:    in std_logic_vector (MEM_ADD_WIDTH - 1 downto 0);

      -- it is set when communication ends and remains until next restart or actual address change

      finished_O:         out std_logic;

      -- when counter finishes, restart

      continuous_I:       in  std_logic;

    );

  end component ctrl_memory_writer;

  component ctrl_data_skipper is

    generic(

      -- max losses = 2**(2**SELECTOR_WIDTH). (i.e., if SELECTOR_WIDTH = 5: 4.2950e+09)

      SELECTOR_WIDTH: integer := 5

    );

    port(

      -- enable output signal

      ack_O:            out  std_logic;

      -- sinal from wishbone interface

      ack_I, stb_I:     in  std_logic;

      -- selector from register, equation: losses = 2**(selector_I + 1) * enable_skipper_I

      selector_I:       in   std_logic_vector(SELECTOR_WIDTH-1 downto 0);

      -- enable from register 

      enable_skipper_I: in   std_logic;

      -- common signals

      reset_I, clk_I:   in   std_logic;

      -- set when returns to the first channel

      first_channel_I:  in   std_logic

    );

  end component ctrl_data_skipper;

  component ctrl_channel_selector is

    generic(

      CHANNEL_WIDTH: integer := 4 -- number of channels 2**CHANNEL_WIDTH, max. 4

    );

    port(

      channels_I:         in  std_logic_vector(integer(2**real(CHANNEL_WIDTH))-1 downto 0);

      channel_number_O:   out std_logic_vector(3 downto 0);

      first_channel_O:    out std_logic;

      clk_I:              in  std_logic;

      enable_I:           in  std_logic;

      reset_I:            in  std_logic

    );

  end component ctrl_channel_selector;

  component ctrl_trigger_manager is

    generic (

      MEM_ADD_WIDTH:  integer := 14;

      DATA_WIDTH:     integer := 10;

      CHANNELS_WIDTH: integer := 4

    );

    port (

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

      channel_I:        in  std_logic_vector (CHANNELS_WIDTH -1 downto 0);

      trig_channel_I:   in  std_logic_vector (CHANNELS_WIDTH -1 downto 0);

      address_I:        in  std_logic_vector (MEM_ADD_WIDTH - 1 downto 0);

      final_address_I:  in  std_logic_vector (MEM_ADD_WIDTH - 1 downto 0);

      -- offset from trigger address (signed). MUST BE: 

      -- -final_address_I < offset_I < final_address_I

      offset_I:         in  std_logic_vector (MEM_ADD_WIDTH  downto 0);

      -- trigger level (from max to min, not signed)

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

      -- use falling edge when falling_I = '1', else rising edge

      falling_I:        in  std_logic;

      clk_I:            in  std_logic;

      reset_I:          in  std_logic;

      enable_I:         in  std_logic;

      -- it is set when trigger condition occurs

      trigger_O:        out std_logic;

      -- address when trigger plus offset

      address_O:        out std_logic_vector (MEM_ADD_WIDTH - 1 downto 0)

    );

  end component ctrl_trigger_manager;

  component ctrl_address_assignments is

    port(

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

      -- From port

      DAT_I_port: in std_logic_vector (15 downto 0);

      DAT_O_port: out std_logic_vector (15 downto 0);

      ADR_I_port: in std_logic_vector (3 downto 0);

      CYC_I_port: in std_logic;

      STB_I_port: in std_logic;

      ACK_O_port: out std_logic ;

      WE_I_port:  in std_logic;

      RST_I: in std_logic;

      CLK_I: in std_logic;

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

      -- To internal 

      CYC_O_int: out std_logic;

      STB_O_int: out std_logic;

      ACK_I_int: in std_logic ;

      DAT_I_int: in std_logic_vector(15 downto 0);

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

      -- Internal

      start_O:          out std_logic;

      continuous_O:     out std_logic;

      trigger_en_O:     out std_losugic;

      trigger_edge_O:   out std_logic;

      trigger_channel_O:out std_logic;

      time_scale_O:     out std_logic_vector(4 downto 0);

      time_scale_en_O:  out std_logic;

      channels_sel_O:   out std_logic_vector(1 downto 0);

      buffer_size_O:    out std_logic_vector(13 downto 0);

      trigger_level_O:  out std_logic_vector(9 downto 0);

      trigger_offset_O: out std_logic_vector(14 downto 0);

      error_number_I:   in std_logic_vector (2 downto 0);

      data_channel_I:   in std_logic;

      running_I:        in std_logic;

      error_flag_I:     in std_logic;

      stop_O:           out std_logic

    );

  end component ctrl_address_assignments;

end package ctrl_pkg;