-- 23.08.2006
-- File: DATA_MUX.VHD
-library ieee ;
-use ieee.std_logic_1164.all ;
-
+library ieee;
+use ieee.std_logic_1164.all;
+
entity DATA_MUX is
- port
- (
- READ_SEL :in std_logic_vector( 1 downto 0);
- ADDR_REG :in std_logic_vector(31 downto 0);
- CBE_REGn :in std_logic_vector( 3 downto 0);
- MUX_IN_XX0 :in std_logic_vector( 7 downto 0);
- MUX_IN_XX1 :in std_logic_vector( 7 downto 0);
- MUX_IN_XX2 :in std_logic_vector( 7 downto 0);
- MUX_IN_XX3 :in std_logic_vector( 7 downto 0);
- MUX_IN_XX4 :in std_logic_vector( 7 downto 0);
- MUX_IN_XX5 :in std_logic_vector( 7 downto 0);
- MUX_IN_XX6 :in std_logic_vector( 7 downto 0);
- MUX_IN_XX7 :in std_logic_vector( 7 downto 0);
- MUX_OUT :out std_logic_vector(31 downto 0);
- READ_XX1_0 :out std_logic;
- READ_XX3_2 :out std_logic;
- READ_XX5_4 :out std_logic;
- READ_XX7_6 :out std_logic
---READ_FIFO :out std_logic
- );
-end entity DATA_MUX ;
+ port
+ (
+ READ_SEL :in std_logic_vector( 1 downto 0);
+ ADDR_REG :in std_logic_vector(31 downto 0);
+ CBE_REGn :in std_logic_vector( 3 downto 0);
+ MUX_IN_XX0 :in std_logic_vector( 7 downto 0);
+ MUX_IN_XX1 :in std_logic_vector( 7 downto 0);
+ MUX_IN_XX2 :in std_logic_vector( 7 downto 0);
+ MUX_IN_XX3 :in std_logic_vector( 7 downto 0);
+ MUX_IN_XX4 :in std_logic_vector( 7 downto 0);
+ MUX_IN_XX5 :in std_logic_vector( 7 downto 0);
+ MUX_IN_XX6 :in std_logic_vector( 7 downto 0);
+ MUX_IN_XX7 :in std_logic_vector( 7 downto 0);
+ MUX_OUT :out std_logic_vector(31 downto 0);
+ READ_XX1_0 :out std_logic;
+ READ_XX3_2 :out std_logic;
+ READ_XX5_4 :out std_logic;
+ READ_XX7_6 :out std_logic
+ --READ_FIFO :out std_logic
+ );
+end entity DATA_MUX;
architecture DATA_MUX_DESIGN of DATA_MUX is
- signal MUX :std_logic_vector(31 downto 0);
- signal SEL :std_logic_vector( 7 downto 0);
+ signal MUX :std_logic_vector(31 downto 0);
+ signal SEL :std_logic_vector( 7 downto 0);
- signal SIG_READ_XX1_0 :std_logic;
- signal SIG_READ_XX3_2 :std_logic;
- signal SIG_READ_XX5_4 :std_logic;
- signal SIG_READ_XX7_6 :std_logic;
+ signal SIG_READ_XX1_0 :std_logic;
+ signal SIG_READ_XX3_2 :std_logic;
+ signal SIG_READ_XX5_4 :std_logic;
+ signal SIG_READ_XX7_6 :std_logic;
begin
- SEL <= ADDR_REG(3 downto 2) & CBE_REGn & READ_SEL ;
-
- SIG_READ_XX1_0 <= '1' when SEL = "00110011" else '0';
- SIG_READ_XX3_2 <= '1' when SEL = "00001111" else '0';
- SIG_READ_XX5_4 <= '1' when SEL = "01110011" else '0';
- SIG_READ_XX7_6 <= '1' when SEL = "01001111" else '0';
+ SEL <= ADDR_REG(3 downto 2) & CBE_REGn & READ_SEL;
+ SIG_READ_XX1_0 <= '1' when SEL = "00110011" else '0';
+ SIG_READ_XX3_2 <= '1' when SEL = "00001111" else '0';
+ SIG_READ_XX5_4 <= '1' when SEL = "01110011" else '0';
+ SIG_READ_XX7_6 <= '1' when SEL = "01001111" else '0';
-
- MUX <= (X"00" & X"00" & MUX_IN_XX1 & MUX_IN_XX0) when SIG_READ_XX1_0 = '1' else
- (MUX_IN_XX3 & MUX_IN_XX2 & X"00" & X"00" ) when SIG_READ_XX3_2 = '1' else
- (X"00" & X"00" & MUX_IN_XX5 & MUX_IN_XX4) when SIG_READ_XX5_4 = '1' else
- (MUX_IN_XX7 & MUX_IN_XX6 & X"00" & X"00" ) when SIG_READ_XX7_6 = '1' else
- (others => '0');
+ MUX <= (X"00" & X"00" & MUX_IN_XX1 & MUX_IN_XX0) when SIG_READ_XX1_0 = '1' else
+ (MUX_IN_XX3 & MUX_IN_XX2 & X"00" & X"00" ) when SIG_READ_XX3_2 = '1' else
+ (X"00" & X"00" & MUX_IN_XX5 & MUX_IN_XX4) when SIG_READ_XX5_4 = '1' else
+ (MUX_IN_XX7 & MUX_IN_XX6 & X"00" & X"00" ) when SIG_READ_XX7_6 = '1' else
+ (others => '0');
--- MUX <= (X"01" & X"23" & MUX_IN_XX1 & MUX_IN_XX0) when SIG_READ_XX1_0 = '1' else
--- (MUX_IN_XX3 & MUX_IN_XX2 & X"45" & X"67" ) when SIG_READ_XX3_2 = '1' else
--- (X"89" & X"AB" & MUX_IN_XX5 & MUX_IN_XX4) when SIG_READ_XX5_4 = '1' else
--- (MUX_IN_XX7 & MUX_IN_XX6 & X"CD" & X"EF" ) when SIG_READ_XX7_6 = '1' else
--- (others => '0');
+ -- MUX <= (X"01" & X"23" & MUX_IN_XX1 & MUX_IN_XX0) when SIG_READ_XX1_0 = '1' else
+ -- (MUX_IN_XX3 & MUX_IN_XX2 & X"45" & X"67" ) when SIG_READ_XX3_2 = '1' else
+ -- (X"89" & X"AB" & MUX_IN_XX5 & MUX_IN_XX4) when SIG_READ_XX5_4 = '1' else
+ -- (MUX_IN_XX7 & MUX_IN_XX6 & X"CD" & X"EF" ) when SIG_READ_XX7_6 = '1' else
+ -- (others => '0');
- MUX_OUT <= MUX ;
+ MUX_OUT <= MUX;
- READ_XX1_0 <= SIG_READ_XX1_0;
- READ_XX3_2 <= SIG_READ_XX3_2;
- READ_XX5_4 <= SIG_READ_XX5_4;
- READ_XX7_6 <= SIG_READ_XX7_6;
+ READ_XX1_0 <= SIG_READ_XX1_0;
+ READ_XX3_2 <= SIG_READ_XX3_2;
+ READ_XX5_4 <= SIG_READ_XX5_4;
+ READ_XX7_6 <= SIG_READ_XX7_6;
---READ_FIFO <= SIG_READ_XX3_2 or SIG_READ_XX5_4;--SIG_READ_XX5_4 nur fuer test
+--READ_FIFO <= SIG_READ_XX3_2 or SIG_READ_XX5_4;--SIG_READ_XX5_4 nur fuer test
-end architecture DATA_MUX_DESIGN ;
+end architecture DATA_MUX_DESIGN;
projects / raggedstone / blobdiff