ram_even.vhd

来自「qpsk vhdl code ue to impelemented on fpg」· VHDL 代码 · 共 50 行

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


entity RAM_Even is

	generic (
		WIDTH : integer;
		AW	  : integer);
		
	port (
		AddrxDIE : in std_logic_vector( AW-1 downto 0);
		WExSIE	: in std_logic;
		EnxSIE	: in std_logic;
		WClkxCI : in std_logic;
		DinxDIE	: in std_logic_vector( WIDTH-1 downto 0);
		DoutxDOE : out std_logic_vector( WIDTH-1 downto 0));

end RAM_Even;


architecture behav of RAM_Even is


type ram_type is array (0 to 1023) of 
	std_logic_vector(width-1 downto 0);
signal tmp_ram: ram_type;


begin 
	process (AddrxDIE)
	begin 
		
		DoutxDOE <= tmp_ram(conv_integer(AddrxDIE));
		
	end process;
	
	process (WClkxCI, WExSIE)
	begin
		if (WClkxCI 'event and WClkxCI ='1') then
			if WExSIE = '1' then
				if EnxSIE = '1' then
				tmp_ram(conv_integer(AddrxDIE)) <= DinxDIE;
				end if;
			end if;
		end if;
	end process;
end behav;