CristalCaveGem » LustreC » Lustrec-Tests

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-- Company   : CNES

-- Author    : Mickael Carl (CNES)

-- Copyright : Copyright (c) CNES. 

-- Licensing : GNU GPLv3

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-- Version         : V1

-- Version history : 

--    V1 : 2015-04-14 : Mickael Carl (CNES): Creation

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-- File name          : CNE_05100_good.vhd

-- File Creation date : 2015-04-14

-- Project name       : VHDL Handbook CNES Edition 

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-- Softwares             :  Microsoft Windows (Windows 7) - Editor (Eclipse + VEditor)

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-- Description : Handbook example: Multiplexor single process based: good example

--

-- Limitations : This file is an example of the VHDL handbook made by CNES. It is a stub aimed at

--               demonstrating good practices in VHDL and as such, its design is minimalistic.

--               It is provided as is, without any warranty.

--               This example is compliant with the Handbook version 1.

--

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-- Naming conventions: 

--

-- i_Port: Input entity port

-- o_Port: Output entity port

-- b_Port: Bidirectional entity port

-- g_My_Generic: Generic entity port

--

-- c_My_Constant: Constant definition 

-- t_My_Type: Custom type definition

--

-- My_Signal_n: Active low signal

-- v_My_Variable: Variable

-- sm_My_Signal: FSM signal

-- pkg_Param: Element Param coming from a package

--

-- My_Signal_re: Rising edge detection of My_Signal

-- My_Signal_fe: Falling edge detection of My_Signal

-- My_Signal_rX: X times registered My_Signal signal

--

-- P_Process_Name: Process

--

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library IEEE;

use IEEE.std_logic_1164.all;

use IEEE.numeric_std.all;

entity CNE_05100_good is

   port  (

      i_A   : in std_logic;   -- First Mux input

      i_B   : in std_logic;   -- Second Mux input

      i_S   : in std_logic;   -- Mux select

      o_O : out std_logic     -- Mux output

   );

end CNE_05100_good;

architecture Behavioral of CNE_05100_good is

   signal O : std_logic; -- Mux output

begin

--CODE

   -- Mux asynchronous process

   P_Mux:process(i_S, i_A, i_B)

   begin

      if (i_S='1') then

         O <= i_B;

      else

         O <= i_A;

      end if;

   end process;

   o_O <= O;

--CODE

end Behavioral;