----------------------------------------------------------
-- musr_switch
-- Author   : Gautam Karnik
-- Date     : March 30, 2001
-- Filename : musr_switch.vhd
-- Architecture : Behavioral
-- Description  : This module serves as the interface module
--                for the dipswitches on the UP 1 Board 
--                and the back-end of the system
----------------------------------------------------------

-------------------------------------------------------------------------------
-- Mobile User Switch
---------------------------------------------------------------------
-- package musr_switch

-- Used to monitor the user switch input, output a number to indicate
-- which user is activated.
-- the switch output is set to '1' when the switch is open, and '0' when the
-- switch is closed; switch up is 'open', switch down is 'close'. so when a
-- user wants to connect, the corresponding switch should be 'up'.
-- LEDs are active low

-- Total logic cells used:                          4/1152   (  0%)

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

library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
use ieee.std_logic_unsigned.all;
library work;
use work.CDMA_pkg.all;

entity musr_switch is
		port ( usr1_switch : in std_logic;
               usr2_switch : in std_logic;
               usr1_LED : out std_logic;
		       usr2_LED : out std_logic;
               usr1_active : out std_logic;
		       usr2_active : out std_logic
	   	);
end musr_switch;

architecture behavioral of musr_switch is

begin


-- with this implementation there is about a 12 ns delay to output.
	usr1_active <= usr1_switch;
	usr2_active <= usr2_switch;
    usr1_LED    <= not usr1_switch;
    usr2_LED    <= not usr2_switch;

end behavioral;