7 downto 0的意思是这个vector是个8位的信号 也可以写成0 to 7，在信号定义中，主要是为了声明这个信号的宽度 在使用中，也可以选取一个vector的任意几位 例如 signal INPUT : std_logic_vector(7 downto 0) := (others => '0');signal RESULT : std_logic_vector(3 downto 0) := (oth...
DIN: IN STD_LOGIC_VECTOR (7 DOWNTO 0); DOUT: OUT STD_LOGIC_VECTOR(7 DOWNTO 0)); END LX3_3; ARCHITECTURE ONE OF lx3_3 IS BEGIN PROCESS(ABIN,DIN) BEGIN FOR I IN 0 TO 7 LOOP DOUT(I)<=DIN(I) AND ANIN(I); END LOOP; ...
use IEEE.STD_LOGIC_1164.ALL; entity bidirection_io is port ( inner_port : inout std_logic_vector(7 downto 0); out_en : in std_logic; outer_port : inout std_logic_vector(7 downto 0) ); end bidirection_io; architecture behavioral of bidirection_io is begin outer_port<=inner_port...
USE IEEE.STD_LOGIC_1164.ALL。 USE IEEE.STD_LOGIC_UNSIGNED.ALL。 ENTITY org_patch IS PORT( org_data : IN STD_LOGIC_VECTOR(7 DOWNTO 0)。--原码输入 patch_data : OUT STD_LOGIC_VECTOR(7 DOWNTO 0))。--补码输出 END org_patch。
port (INBUSA, EN : in std_logic_vector(2 downto 0); SIGA : in std_logic_vector(1 downto 0); OUT_SIG : out std_logic); end LONG_LINE_EX1; architecture XILINX of LONG_LINE_EX1 is component PULLUP PORT (O : out std_logic); ...
m序列vhdl程序,多项式f(x)=1+x^2+x^3+x^4+x^8 ,library ieee; use ieee.std_logic_1164.all; use ieee.std_logic_arith.all; use ieee.std_logic_unsigned.all; entity PRSG is port (reset,clk:in std_logic; sel:in std_logic_vector(1 downto 0); dout:out st
How to convert a signal of std_logic_vector(15 downto 0) to integer and then pass it or use it to a VDL module's variable? I tried the following but getting error In the VHDL module ... entity foobar is port( row_in : in std_logic_...
IrC : in std_logic; IrL : in std_logic; IrR : in std_logic; c : in std_logic_vector(3 downto 0); l : out std_logic_vector(3 downto 0); r: out std_logic_vector(3 downto 0); g: out std_logic_vector(7 downto 0)); end ats_top; architecture arc_ats_top ...
The std_logic_vector type can be used for creating signal buses in VHDL. It is the array version of the std_logic, the most commonly used type in VHDL.
address_b : IN std_logic_vector (fcn_log2_ceil(NUM_WORDS)-1 downto 0); rden_b : IN std_logic; q_b : OUT std_logic_vector (DATA_WIDTH-1 downto 0); data_a : IN std_logic_vector (DATA_WIDTH-1 downto 0) ); END COMPONENT; We cannot remove clock1 an...