library ieee副本.docx
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libraryieee副本
蜗牛的染色体学院
电子设计自动化
实验报告
姓 名：
吃一口羊羔肉
学号：
一口吃羊羔肉
班级：
吃羊羔肉一口
实验内容：
多路波形发生器
指导教师：
羊羔肉吃一口
报告日期：
多路波形发生器实验
1.实验要求
1.1.对输入时钟信号进行分频，实现三路互差120度的信号。
1.2.实现输出信号的占空比例控制。
其中
clk：
输入时钟信号；
reset：
同步复位信号（低电平有效）；
div：
输入分频控制信号（6n分频）；
ctrl：
占空比例控制信号，其中
当ctrl=1时，占空比为1：
1；
当ctrl=2时，占空比为1：
2；
当ctrl=3时，占空比为2：
1；
A,B,C：
三路输出信号。
2.设计思路
2.1clk：
时钟输入，设置为上升沿触发；
2.2.reset：
题目要求同步复位，故应将时钟输入作为reset
触发的必要条件。
2.3.div：
题目要求为6分频，用二进制表示为
（110）2,（1100）2，（100100）2以此类推。
当temp计
数是遇到上述数字便清零重新技术以实现6n分
频。
2.4.ctrl：
占空比为三种，分别用（01）2，（10）2，（11）
2表示。
然后用temp中3位0和1的个数比例
来控制占空比。
占空比=1的个数/（0的个数+1
的个数）
又因为题目要求相位角互差120度，即三个输出
依次领先前一位4个输入字符。
即若A（0）=1，则
B（4）=1，C（8）=1。
A（0）B（4）C（8）为同相位。
2.5.temp:
声明三个变量，其中
temp为三位，分别对应于A，B，C。
用于输出。
temp2与temp3用于计数分频。
3.程序流程图
4.源程序一
libraryieee;
useieee.std_logic_1164.all;
useieee.std_logic_arith.all;
useieee.std_logic_unsigned.all;
entityzongheis
port
（
clk:
instd_logic;
aclk:
outstd_logic;
bclk:
outstd_logic;
cclk:
outstd_logic;
resetb:
instd_logic;
div:
instd_logic_vector（1downto0）;
ctrl:
instd_logic_vector（1downto0）
）;
endzonghe;
architecturebehaveofzongheis
signaltmp:
std_logic;
signaltmp1:
std_logic;
signaltmp2:
std_logic;
signalcnt0:
integerrange0to5:
=0;
signalcnt1:
integerrange0to11:
=0;
signalcnt2:
integerrange0to17:
=0;
signalcnt3:
integerrange0to23:
=0;
begin
process（clk,resetb,div,ctrl）
begin
ifclk'eventandclk='1'then
ifresetb='0'then
cnt0<=0;
cnt1<=0;
cnt2<=0;
cnt3<=0;
tmp<='0';
tmp1<='0';
tmp2<='0';
elsifresetb='1'then
cnt0<=cnt0+1;
cnt1<=cnt1+1;
cnt2<=cnt2+1;
cnt3<=cnt3+1;
casectrlis
when"01"=>
casedivis
when"00"=>
casecnt0is
when0=>tmp<='0';tmp1<='1';tmp2<='0';
when1=>tmp<='0';tmp1<='1';tmp2<='1';
when2=>tmp<='0';tmp1<='0';tmp2<='1';
when3=>tmp<='1';tmp1<='0';tmp2<='1';
when4=>tmp<='1';tmp1<='0';tmp2<='0';
when5=>tmp<='1';tmp1<='1';tmp2<='0';cnt0<=0;
endcase;
when"01"=>
casecnt1is
when0=>tmp<='0';tmp1<='1';tmp2<='0';
when1=>tmp<='0';tmp1<='1';tmp2<='0';
when2=>tmp<='0';tmp1<='1';tmp2<='1';
when3=>tmp<='0';tmp1<='1';tmp2<='1';
when4=>tmp<='0';tmp1<='0';tmp2<='1';
when5=>tmp<='0';tmp1<='0';tmp2<='1';
when6=>tmp<='1';tmp1<='0';tmp2<='1';
when7=>tmp<='1';tmp1<='0';tmp2<='1';
when8=>tmp<='1';tmp1<='0';tmp2<='0';
when9=>tmp<='1';tmp1<='0';tmp2<='0';
when10=>tmp<='1';tmp1<='1';tmp2<='0';
when11=>tmp<='1';tmp1<='1';tmp2<='0';cnt1<=0;
endcase;
when"10"=>
casecnt2is
when0=>tmp<='0';tmp1<='1';tmp2<='0';
when1=>tmp<='0';tmp1<='1';tmp2<='0';
when2=>tmp<='0';tmp1<='1';tmp2<='0';
when3=>tmp<='0';tmp1<='1';tmp2<='1';
when4=>tmp<='0';tmp1<='1';tmp2<='1';
when5=>tmp<='0';tmp1<='1';tmp2<='1';
when6=>tmp<='0';tmp1<='0';tmp2<='1';
when7=>tmp<='0';tmp1<='0';tmp2<='1';
when8=>tmp<='0';tmp1<='0';tmp2<='1';
when9=>tmp<='1';tmp1<='0';tmp2<='1';
when10=>tmp<='1';tmp1<='0';tmp2<='1';
when11=>tmp<='1';tmp1<='0';tmp2<='1';
when12=>tmp<='1';tmp1<='0';tmp2<='0';
when13=>tmp<='1';tmp1<='0';tmp2<='0';
when14=>tmp<='1';tmp1<='0';tmp2<='0';
when15=>tmp<='1';tmp1<='1';tmp2<='0';
when16=>tmp<='1';tmp1<='1';tmp2<='0';
when17=>tmp<='1';tmp1<='1';tmp2<='0';cnt2<=0;
endcase;
when"11"=>
casecnt3is
when0=>tmp<='0';tmp1<='1';tmp2<='0';
when1=>tmp<='0';tmp1<='1';tmp2<='0';
when2=>tmp<='0';tmp1<='1';tmp2<='0';
when3=>tmp<='0';tmp1<='1';tmp2<='0';
when4=>tmp<='0';tmp1<='1';tmp2<='1';
when5=>tmp<='0';tmp1<='1';tmp2<='1';
when6=>tmp<='0';tmp1<='1';tmp2<='1';
when7=>tmp<='0';tmp1<='1';tmp2<='1';
when8=>tmp<='0';tmp1<='0';tmp2<='1';
when9=>tmp<='0';tmp1<='0';tmp2<='1';
when10=>tmp<='0';tmp1<='0';tmp2<='1';
when11=>tmp<='0';tmp1<='0';tmp2<='1';
when12=>tmp<='1';tmp1<='0';tmp2<='1';
when13=>tmp<='1';tmp1<='0';tmp2<='1';
when14=>tmp<='1';tmp1<='0';tmp2<='1';
when15=>tmp<='1';tmp1<='0';tmp2<='1';
when16=>tmp<='1';tmp1<='0';tmp2<='0';
when17=>tmp<='1';tmp1<='0';tmp2<='0';
when18=>tmp<='1';tmp1<='0';tmp2<='0';
when19=>tmp<='1';tmp1<='0';tmp2<='0';
when20=>tmp<='1';tmp1<='1';tmp2<='0';
when21=>tmp<='1';tmp1<='1';tmp2<='0';
when22=>tmp<='1';tmp1<='1';tmp2<='0';
when23=>tmp<='1';tmp1<='1';tmp2<='0';cnt3<=0;
endcase;
endcase;
when"10"=>
casedivis
when"00"=>
casecnt0is
when0=>tmp<='0';tmp1<='1';tmp2<='0';
when1=>tmp<='0';tmp1<='1';tmp2<='0';
when2=>tmp<='0';tmp1<='0';tmp2<='1';
when3=>tmp<='0';tmp1<='0';tmp2<='1';
when4=>tmp<='1';tmp1<='0';tmp2<='0';
when5=>tmp<='1';tmp1<='0';tmp2<='0';cnt0<=0;
endcase;
when"01"=>
casecnt1is
when0=>tmp<='0';tmp1<='1';tmp2<='0';
when1=>tmp<='0';tmp1<='1';tmp2<='0';
when2=>tmp<='0';tmp1<='1';tmp2<='0';
when3=>tmp<='0';tmp1<='1';tmp2<='0';
when4=>tmp<='0';tmp1<='0';tmp2<='1';
when5=>tmp<='0';tmp1<='0';tmp2<='1';
when6=>tmp<='0';tmp1<='0';tmp2<='1';
when7=>tmp<='0';tmp1<='0';tmp2<='1';
when8=>tmp<='1';tmp1<='0';tmp2<='0';
when9=>tmp<='1';tmp1<='0';tmp2<='0';
when10=>tmp<='1';tmp1<='0';tmp2<='0';
when11=>tmp<='1';tmp1<='0';tmp2<='0';cnt1<=0;
endcase;
when"10"=>
casecnt2is
when0=>tmp<='0';tmp1<='1';tmp2<='0';
when1=>tmp<='0';tmp1<='1';tmp2<='0';
when2=>tmp<='0';tmp1<='1';tmp2<='0';
when3=>tmp<='0';tmp1<='1';tmp2<='0';
when4=>tmp<='0';tmp1<='1';tmp2<='0';
when5=>tmp<='0';tmp1<='1';tmp2<='0';
when6=>tmp<='0';tmp1<='0';tmp2<='1';
when7=>tmp<='0';tmp1<='0';tmp2<='1';
when8=>tmp<='0';tmp1<='0';tmp2<='1';
when9=>tmp<='0';tmp1<='0';tmp2<='1';
when10=>tmp<='0';tmp1<='0';tmp2<='1';
when11=>tmp<='0';tmp1<='0';tmp2<='1';
when12=>tmp<='1';tmp1<='0';tmp2<='0';
when13=>tmp<='1';tmp1<='0';tmp2<='0';
when14=>tmp<='1';tmp1<='0';tmp2<='0';
when15=>tmp<='1';tmp1<='0';tmp2<='0';
when16=>tmp<='1';tmp1<='0';tmp2<='0';
when17=>tmp<='1';tmp1<='0';tmp2<='0';cnt2<=0;
endcase;
when"11"=>
casecnt3is
when0=>tmp<='0';tmp1<='1';tmp2<='0';
when1=>tmp<='0';tmp1<='1';tmp2<='0';
when2=>tmp<='0';tmp1<='1';tmp2<='0';
when3=>tmp<='0';tmp1<='1';tmp2<='0';
when4=>tmp<='0';tmp1<='1';tmp2<='0';
when5=>tmp<='0';tmp1<='1';tmp2<='0';
when6=>tmp<='0';tmp1<='1';tmp2<='0';
when7=>tmp<='0';tmp1<='1';tmp2<='0';
when8=>tmp<='0';tmp1<='0';tmp2<='1';
when9=>tmp<='0';tmp1<='0';tmp2<='1';
when10=>tmp<='0';tmp1<='0';tmp2<='1';
when11=>tmp<='0';tmp1<='0';tmp2<='1';
when12=>tmp<='0';tmp1<='0';tmp2<='1';
when13=>tmp<='0';tmp1<='0';tmp2<='1';
when14=>tmp<='0';tmp1<='0';tmp2<='1';
when15=>tmp<='0';tmp1<='0';tmp2<='1';
when16=>tmp<='1';tmp1<='0';tmp2<='0';
when17=>tmp<='1';tmp1<='0';tmp2<='0';
when18=>tmp<='1';tmp1<='0';tmp2<='0';
when19=>tmp<='1';tmp1<='0';tmp2<='0';
when20=>tmp<='1';tmp1<='0';tmp2<='0';
when21=>tmp<='1';tmp1<='0';tmp2<='0';
when22=>tmp<='1';tmp1<='0';tmp2<='0';
when23=>tmp<='1';tmp1<='0';tmp2<='0';cnt3<=0;
endcase;
endcase;
when"11"=>
casedivis
when"00"=>
casecnt0is
when0=>tmp<='0';tmp1<='1';tmp2<='1';
when1=>tmp<='0';tmp1<='1';tmp2<='1';
when2=>tmp<='1';tmp1<='0';tmp2<='1';
when3=>tmp<='1';tmp1<='0';tmp2<='1';
when4=>tmp<='1';tmp1<='1';tmp2<='0';
when5=>tmp<='1';tmp1<='1';tmp2<='0';cnt0<=0;
endcase;
when"01"=>
casecnt1is
when0=>tmp<='0';tmp1<='1';tmp2<='1';
when1=>tmp<='0';tmp1<='1';tmp2<='1';
when2=>tmp<='0';tmp1<='1';tmp2<='1';
when3=>tmp<='0';tmp1<='1';tmp2<='1';
when4=>tmp<='1';tmp1<='0';tmp2<='1';
when5=>tmp<='1';tmp1<='0';tmp2<='1';
when6=>tmp<='1';tmp1<='0';tmp2<='1';
when7=>tmp<='1';tmp1<='0';tmp2<='1';
when8=>tmp<='1';tmp1<='1';tmp2<='0';
when9=>tmp<='1';tmp1<='1';tmp2<='0';
when10=>tmp<='1';tmp1<='1';tmp2<='0';
when11=>tmp<='1';tmp1<='1';tmp2<='0';cnt1<=0;
endcase;
when"10"=>
casecnt2is
when0=>tmp<='0';tmp1<='1';tmp2<='1';
when1=>tmp<='0';tmp1<='1';tmp2<='1';
when2=>tmp<='0';tmp1<='1';tmp2<='1';
when3=>tmp<='0';tmp1<='1';tmp2<='1';
when4=>tmp<='0';tmp1<='1';tmp2<='1';
when5=>tmp<='0';tmp1<='1';tmp2<='1';
when6=>tmp<='1';tmp1<='0';tmp2<='1';
when7=>tmp<='1';tmp1<='0';tmp2<='1';
when8=>tmp<='1';tmp1<='0';tmp2<='1';
when9=>tmp<='1';tmp1<='0';tmp2<='1';
when10=>tmp<='1';tmp1<='0';tmp2<='1';
when11=>tmp<='1';tmp1<='0';tmp2<='1';
when12=>tmp<='1';tmp1<='1';tmp2<='0';
when13=>tmp<='1';tmp1<='1';tmp2<='0';
when14=>tmp<='1';tmp1<='1';tmp2<='0';
when15=>tmp<='1';tmp1<='1';tmp2<='0';
when16=>tmp<='1';tmp1<='1';tmp2<='0';
when17=>tmp<='1';tmp1<='1';tmp2<='0';cnt2<=0;
endcase;
when"11"=>
casecnt3is
when0=>tmp<='0';tmp1<='1';tmp2<='1';
when1=>tmp<='0';tmp1<='1';tmp2<='1';
when2=>tmp<='0';tmp1<='1';tmp2<='1';
when3=>tmp<='0';tmp1<='1';tmp2<='1';
when4=>tmp<='0';tmp1<='1';tmp2<='1';
when5=>tmp<='0';tmp1<='1';tmp2<='1';
when6=>tmp<='0';tmp1<='1';tmp2<='1';
when7=>tmp<='0';tmp1<='1';tmp2<='1';
when8=>tmp<='1';tmp1<='0';tmp2<='1';
when9=>tmp<='1';tmp1<='0';tmp2<='1';
when10=>tmp<='1';tmp1<='0';tmp2<='1';
when11=>tmp<='1';tmp1<='0';tmp2<='1';
when12=>tmp<='1';tmp1<='0';tmp2<='1';
when13=>tmp<='1';tmp1<='0';tmp2<='1';
when14=>tmp<='1';tmp1<='0';tmp2<='1';
when15=>tmp<='1';tmp1<='0';tmp2<='1';
when16=>tmp<='1';tmp1<='1';tmp2<='0';
when17=>tmp<='1';tmp1<='1';tmp2<='0';
when18=>tmp<='1';tmp1<='1';tmp2<='0';
when19=>tmp<='1';tmp1<='1';tmp2<='0';
when20=>tmp<='1';tmp1<='1';tmp2<='0';
when21=>tmp<='1';tmp1<='1';tmp2<='0';
when22=>tmp<='1';tmp1<='1';tmp2<='0';
when23=>tmp<='1';tmp1<='1';tmp2<='0';cnt3<=0;
endcase;
endcase;
when"00"=>tmp<='0';tmp1<='0';tmp2<='0';
endcase;
endif;
endif;
endprocess;
aclk<=tmp;
bclk<=tmp1;
cclk<=tmp2;
endbehave;
7源程序二
libraryieee;
useieee.std_logic_116
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