菜鸟跪求,用VHDL编写一分频器,用于输出音乐中的1234567.。
来源:百度知道 编辑:UC知道 时间:2024/06/15 16:56:29
------------------------------------------------
--Project :
--Version : 1.0
--Begin : 2009-03-13
--Complete: 2009-03-13
--Author : Cai Jun
--Chip type : EP1C3T144C8
--Clock frequence : 40M
--Platform : Quartus II Version 7.1
--Description :
--输入时钟为40MHZ,7个输出out 1,2,3,4,5,6,7
--分别输出33472,36992,42176,44672,50176,56320,63232Hz
--占空比1:1
------------------------------------------------
library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;
entity fenpin2 is
port(
clk_in : in std_logic;
out1 : out std_logic;
out2 : out std_logic;
out3 : out std_logic;
out4 : out std_logic;
out5 : out std_logic;
out6 : out std_logic;
out7 : out std_logic
);
end fenpin2;
architecture structure of fenpin2 is
signal counter1:integer range 0 to 1024:=0;
signal counter2:integer