Homec4science
Diffusion Lightweight ForkAES (master) Browse

lightforkaes/Configuration_A/src/cgate.vhd
5093465fcf8amaster

Last Change
Raw File

cgate.vhd
View Options

library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
entity cgate is
port ( ClkxC : in std_logic ;
RcntxDP : in std_logic_vector(4 downto 0) ;
CRxD : in std_logic_vector(4 downto 0) ;
ModexS : in std_logic_vector(1 downto 0) ;
EDxSI : in std_logic ;
GClkxC : out std_logic ;
FClkxC : out std_logic ;
RClk0xC : out std_logic ;
RClk1xC : out std_logic ;
RClk2xC : out std_logic ;
RClk3xC : out std_logic ;
TClkxC : out std_logic
);
end entity cgate;
architecture cg of cgate is
signal EnKxS,FnKxS,KeyFxS : std_logic;
signal EN0xS, EN1xS, EN2xS, EN3xS,EnTxS : std_logic;
signal CRxDP: integer range 0 to 31;
begin
GClkxC <= EnKxS;
FClkxC <= FnKxS;
RClk0xC <= EN0xS;
RClk1xC <= EN1xS;
RClk2xC <= EN2xS;
RClk3xC <= EN3xS;
TClkxC <= EnTxS;
sig : process (RcntxDP,EDxSI,KeyFxS)
begin
if (RcntxDP = "00001" or RcntxDP = "00010" or RcntxDP = "00100"
or RcntxDP = "10110"
or RcntxDP = "01100"
or RcntxDP = "11001"
or RcntxDP = "10011"
or RcntxDP = "00111"
or RcntxDP = "01111"
or RcntxDP = "11111"
or RcntxDP = "11110") then
EnKxS<='1';
else
EnKxS<='0';
end if;
-- Sr row0 ENC :0 1 2 dec: 12,13,14
if (EDxSI ='0' and (RcntxDP = "00001" or RcntxDP = "00010" or RcntxDP = "00100" )) or (EDxSI ='1' and (RcntxDP = "01111" or RcntxDP = "11111" or RcntxDP = "11110" )) or KeyFxS ='1' then
--or BMxS = '1' then
En0xS <='1';
else
En0xS <='0';
end if;
-- Sr row 1 ENC: 0 1 DEC: NReq
if (EDxSI = '0' and (RcntxDP = "00001" or RcntxDP = "00010") ) or KeyFxS ='1' then -- or BMxS = '1' then
En1xS <='1';
else
En1xS <='0';
end if;
-- Sr row 2 ENC: 0 DEC: 12
if (EDxSI = '0' and RcntxDP = "00001") or (EDxSI = '1' and RcntxDP = "01111") or KeyFxS ='1' then --or BMxS = '1' then
En2xS <='1';
else
En2xS <='0';
end if;
-- Sr row 3 ENC: NR Dec: 12 13
if (EDxSI = '1' and (RcntxDP = "01111" or RcntxDP = "11111") ) or KeyFxS ='1' then --or BMxS = '1' then
En3xS <='1';
else
En3xS <='0';
end if;
if (RcntxDP = "11100" or RcntxDP = "11000"
or RcntxDP = "10001"
or RcntxDP = "00011"
or RcntxDP = "00110"
or RcntxDP = "01101"
or RcntxDP = "11011"
or RcntxDP = "10111"
or RcntxDP = "01110"
or RcntxDP = "11101"
or RcntxDP = "11010"
or RcntxDP = "10101"
or RcntxDP = "01010"
or RcntxDP = "10100"
or RcntxDP = "01000"
or RcntxDP = "10000" ) then
FnKxS<='0';
else
FnKxS<='1';
end if;
if (RcntxDP = "11100" or RcntxDP = "11000"
or RcntxDP = "10001"
or RcntxDP = "00011"
or RcntxDP = "00110"
or RcntxDP = "01101"
or RcntxDP = "11011"
or RcntxDP = "10111") then
EnTxS <='0';------------------@@@@@@@@@@@@@@@@@@@@____@@@@@@@@@@@@@@@@@@@@@@@@@@@@-------------------
else
EnTxS <='1';
end if;
end process;
KeyFxS <= '1' when (ModexS="00" and ((CRxDP >15 and CRxDP <21) or (CRxDP=21 and (FnKxS='1') and RcntxDP/= "11100"))) or
(ModexS="10" and ((CRxDP >5 and CRxDP <11) or (CRxDP=11 and (FnKxS='1') and RcntxDP/= "11100")))
else '0'; -----------------
CRxDP<= to_integer(unsigned(CRxD));
end architecture cg;
c4science · Help