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 std_logic_vector(7 downto...
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); end component; signal INT_SIG : std_logic; begin ...
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...
assign inner_port=(out_en==0)?outer_port:8'hzz; endmodule 用VHDL语言描述双向端口如下: library ieee; 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 downt...
1 VHDL中定义的record端口在SystemVerilog中例化 【示例】 VHDL-type_pkg: library ieee; use ieee.std_logic_1164.all; package type_pkg is type type_grp is record s1 : std_logic; s2 : std_logic_vector(1 downto 0); s3 : std_logic_vector(2 downto 0); ...
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; ...
signal MySlv : std_logic_vector(0 downto 0); The VHDL code for declaring a vector signal that can hold zero bits (anempty range): signal MySlv : std_logic_vector(-1 downto 0); Exercise In this video tutorial, we will learn how to declarestd_logic_vectorsignals and give them initia...
Cout: out std_logic); End up_down;A. of up_down is 结构体说明 B. Signal count: std_logic_vector(2 downto 0); C. egin D. Process(clk,rst) 进程,敏感信号为clk rst E. egin F. If rst=’0’ then G. ount<=(others=>’0’); 异步清零lsif...
USE ieee.numeric_std.ALL; entity conv_test is Port ( a : in STD_LOGIC_VECTOR (7 downto 0); b : out integer); end conv_test; architecture Behavioral of conv_test is begin b <= to_integer(signed(a)); end Behavioral; For unsigned integer, modify the snippet as: ...
(31 DOWNTO 0); -- single InBus_signal3 : IN std_logic_vector(31 DOWNTO 0); -- single InBus_signal4 : IN std_logic_vector(31 DOWNTO 0); -- single OutBus_signal1 : OUT std_logic_vector(31 DOWNTO 0); -- single OutBus_signal2 : OUT std_logic_vector(31 DOWNTO 0) -- ...