多路波形發(fā)生器電子設(shè)計自動化vhdl語言實(shí)驗(yàn)報告

1、電子設(shè)計自動化多路波形發(fā)生器指導(dǎo)老師：劉彪電氣工程學(xué)院電氣1003班楊黎102910942021年10月27日一、 實(shí)驗(yàn)題目要求 1、對輸入時鐘信號進(jìn)行分頻，實(shí)現(xiàn)三路互差120° 的信號。2、實(shí)現(xiàn)輸出信號的占空比控制 clk: 輸入時鐘信號 reset: 同步復(fù)位信號低電平有效 div: 輸入分頻控制信號(注意：6n分頻) ctrl: 占空比控制信號 ctrl=1時, 占空比為1:1 ctrl=2時, 占空比為1:2 ctrl=3時, 占空比為2:1 A,B,C: 三路輸出信號二、 設(shè)計思路及方案1、多路發(fā)生器的根本原理分頻器而且是可調(diào)的。因此可以先設(shè)計多個子程序分別使得信號發(fā)生器的

2、產(chǎn)生的占空比分別為1:1,1:2,2:1；因此先設(shè)div:integer range 1 to 4;。通過信號賦值tmp,tmp1,tmp2賦給輸出信號A,B,C. 通過n改變輸出頻率。定義各個變量。2、當(dāng)resetb=0時,countQ=0；當(dāng)resetb=1時。給脈沖時先定義分頻比方果countQ < (6*div-1)時countQ <= countQ 否那么countQ為0。3、當(dāng)cltr=01時即H:L=1:1時如果countQ < 3*div時tmp<=0;否者tmp<=1如果countQ < 2*div or countQ>(6*div-

3、2)時tmp1<= '1'否者 tmp1<='0'如果countQ < div or countQ>(4*div-1)時tmp2<= '0'否者 tmp2<='1'A等于tmp；B=tmp2；C=tmp3；同理：當(dāng)cltr=10時即H:L=1:2時 當(dāng)cltr=11時即H:L=2:1時。其中；公式推導(dǎo)如下：當(dāng)div=1,cltr=01時 當(dāng)div=2，cltr=01時 countQ<6 countQ<12A：0 0 0 1 1 1； A:0 0 0 0 0 0 1 1 1 1 1 1

4、B：1 1 0 0 0 1； B:1 1 1 1 0 0 0 0 0 0 1 1C：0 1 1 1 0 0； C:0 0 1 1 1 1 1 1 0 0 0 0A：countQ<3時tmp=0 A；countQ<6時tmp=0Else tmp=1 Else tmp=1B：countQ<2 or countQ>4時tmp=1 B：countQ<4or countQ>10 ，tmp=1 Else tmp=0 Else tmp=0C:countQ<1 or countQ>3時tmp=0 C: countQ<2 or countQ>7時tmp

5、=0Else tmp=1 Else tmp=1同理：cltr=10，cltr=11.當(dāng)cltr=01時if(countQ < 3*div) then tmp<= '0'else tmp<='1'if(countQ < 2*div or countQ>(6*div-2) then tmp1<= '1'else tmp1<='0'if(countQ < div or countQ>(4*div-1) then tmp2<= '0'else tmp2<=&

6、#39;1'當(dāng)cltr=10時if(countQ < 4*div) then tmp<= '0'else tmp<='1'if(countQ < 2*div ) then tmp1<= '1'else tmp1<='0'if(countQ < 2*div or countQ>(4*div-1) then tmp2<= '0' else tmp2<='1'當(dāng)cltr=11時if(countQ < 2*div) then tmp&

7、lt;= '0'else tmp<='1'if(countQ < 2*div or countQ>(4*div-1) then tmp1<= '1'else tmp1<='0'if(countQ < 4*div ) then tmp2<= '1'else tmp2<='0'將信號tmp 賦給A ; tmp1 賦給B ； tmp2 賦給 C ;三、流程圖Reset=0? 0 1Tmp、tmp1、tmp2=0是否有信號輸入Tmp=a tmp1=b tmp2

8、=c判定ctrl的值 否 是 1 2 3調(diào)用相應(yīng)的子程序 四、實(shí)驗(yàn)程序及其波形 library ieee;use ieee.std_logic_1164.all;use ;use ;entity fashengq is port ( clk:in std_logic; aclk:out std_logic; bclk:out std_logic; cclk:out std_logic; resetb:in std_logic; div:in std_logic_vector(1 downto 0); ctrl:in std_logic_vector(1 downto 0) );end fang

9、shengq;architecture behave of fangshengq issignal tmp:std_logic; signal tmp1:std_logic; signal tmp2:std_logic; signal cnt0:integer range 0 to 5:=0; signal cnt1:integer range 0 to 11:=0; signal cnt2:integer range 0 to 17:=0; signal cnt3:integer range 0 to 23:=0; begin process(clk,resetb,div,ctrl) beg

10、in if clk'event and clk='1' then if resetb='0' then cnt0<=0; cnt1<=0; cnt2<=0; cnt3<=0; tmp<='0' tmp1<='0' tmp2<='0' elsif resetb='1' then cnt0<=cnt0+1; cnt1<=cnt1+1; cnt2<=cnt2+1; cnt3<=cnt3+1; case ctrl is when &q

11、uot;01"=> case div is when "00"=> case cnt0 is when 0=>tmp<='0'tmp1<='1'tmp2<='0' when 1=>tmp<='0'tmp1<='1'tmp2<='1' when 2=>tmp<='0'tmp1<='0'tmp2<='1' when 3=>tmp<=

12、'1'tmp1<='0'tmp2<='1' when 4=>tmp<='1'tmp1<='0'tmp2<='0' when 5=>tmp<='1'tmp1<='1'tmp2<='0'cnt0<=0; end case; when "01"=> case cnt1 is when 0=>tmp<='0'tmp1<='1&#

13、39;tmp2<='0' when 1=>tmp<='0'tmp1<='1'tmp2<='0' when 2=>tmp<='0'tmp1<='1'tmp2<='1' when 3=>tmp<='0'tmp1<='1'tmp2<='1' when 4=>tmp<='0'tmp1<='0'tmp2<='

14、;1' when 5=>tmp<='0'tmp1<='0'tmp2<='1' when 6=>tmp<='1'tmp1<='0'tmp2<='1' when 7=>tmp<='1'tmp1<='0'tmp2<='1' when 8=>tmp<='1'tmp1<='0'tmp2<='0' when 9=&

15、gt;tmp<='1'tmp1<='0'tmp2<='0' when 10=>tmp<='1'tmp1<='1'tmp2<='0' when 11=>tmp<='1'tmp1<='1'tmp2<='0'cnt1<=0; end case; when "10"=> case cnt2 is when 0=>tmp<='0'tmp1

16、<='1'tmp2<='0' when 1=>tmp<='0'tmp1<='1'tmp2<='0' when 2=>tmp<='0'tmp1<='1'tmp2<='0' when 3=>tmp<='0'tmp1<='1'tmp2<='1' when 4=>tmp<='0'tmp1<='1'

17、tmp2<='1' when 5=>tmp<='0'tmp1<='1'tmp2<='1' when 6=>tmp<='0'tmp1<='0'tmp2<='1' when 7=>tmp<='0'tmp1<='0'tmp2<='1' when 8=>tmp<='0'tmp1<='0'tmp2<='1&

18、#39; when 9=>tmp<='1'tmp1<='0'tmp2<='1' when 10=>tmp<='1'tmp1<='0'tmp2<='1' when 11=>tmp<='1'tmp1<='0'tmp2<='1' when 12=>tmp<='1'tmp1<='0'tmp2<='0' when 13=

19、>tmp<='1'tmp1<='0'tmp2<='0' when 14=>tmp<='1'tmp1<='0'tmp2<='0' when 15=>tmp<='1'tmp1<='1'tmp2<='0' when 16=>tmp<='1'tmp1<='1'tmp2<='0' when 17=>tmp<=

20、'1'tmp1<='1'tmp2<='0'cnt2<=0; end case; when "11"=> case cnt3 is when 0=>tmp<='0'tmp1<='1'tmp2<='0' when 1=>tmp<='0'tmp1<='1'tmp2<='0' when 2=>tmp<='0'tmp1<='1&#

21、39;tmp2<='0' when 3=>tmp<='0'tmp1<='1'tmp2<='0' when 4=>tmp<='0'tmp1<='1'tmp2<='1' when 5=>tmp<='0'tmp1<='1'tmp2<='1' when 6=>tmp<='0'tmp1<='1'tmp2<='

22、;1' when 7=>tmp<='0'tmp1<='1'tmp2<='1' when 8=>tmp<='0'tmp1<='0'tmp2<='1' when 9=>tmp<='0'tmp1<='0'tmp2<='1' when 10=>tmp<='0'tmp1<='0'tmp2<='1' when 11

23、=>tmp<='0'tmp1<='0'tmp2<='1' when 12=>tmp<='1'tmp1<='0'tmp2<='1' when 13=>tmp<='1'tmp1<='0'tmp2<='1' when 14=>tmp<='1'tmp1<='0'tmp2<='1' when 15=>tmp<

24、='1'tmp1<='0'tmp2<='1' when 16=>tmp<='1'tmp1<='0'tmp2<='0' when 17=>tmp<='1'tmp1<='0'tmp2<='0' when 18=>tmp<='1'tmp1<='0'tmp2<='0' when 19=>tmp<='1'

25、tmp1<='0'tmp2<='0' when 20=>tmp<='1'tmp1<='1'tmp2<='0' when 21=>tmp<='1'tmp1<='1'tmp2<='0' when 22=>tmp<='1'tmp1<='1'tmp2<='0' when 23=>tmp<='1'tmp1<=

26、9;1'tmp2<='0'cnt3<=0; end case; end case; when "10"=> case div is when "00"=> case cnt0 is when 0=>tmp<='0'tmp1<='1'tmp2<='0' when 1=>tmp<='0'tmp1<='1'tmp2<='0' when 2=>tmp<='

27、;0'tmp1<='0'tmp2<='1' when 3=>tmp<='0'tmp1<='0'tmp2<='1' when 4=>tmp<='1'tmp1<='0'tmp2<='0' when 5=>tmp<='1'tmp1<='0'tmp2<='0'cnt0<=0; end case; when "01"

28、;=> case cnt1 is when 0=>tmp<='0'tmp1<='1'tmp2<='0' when 1=>tmp<='0'tmp1<='1'tmp2<='0' when 2=>tmp<='0'tmp1<='1'tmp2<='0' when 3=>tmp<='0'tmp1<='1'tmp2<='0&#

29、39; when 4=>tmp<='0'tmp1<='0'tmp2<='1' when 5=>tmp<='0'tmp1<='0'tmp2<='1' when 6=>tmp<='0'tmp1<='0'tmp2<='1' when 7=>tmp<='0'tmp1<='0'tmp2<='1' when 8=>t

30、mp<='1'tmp1<='0'tmp2<='0' when 9=>tmp<='1'tmp1<='0'tmp2<='0' when 10=>tmp<='1'tmp1<='0'tmp2<='0' when 11=>tmp<='1'tmp1<='0'tmp2<='0'cnt1<=0; end case; when

31、"10"=> case cnt2 is when 0=>tmp<='0'tmp1<='1'tmp2<='0' when 1=>tmp<='0'tmp1<='1'tmp2<='0' when 2=>tmp<='0'tmp1<='1'tmp2<='0' when 3=>tmp<='0'tmp1<='1'tmp2

32、<='0' when 4=>tmp<='0'tmp1<='1'tmp2<='0' when 5=>tmp<='0'tmp1<='1'tmp2<='0' when 6=>tmp<='0'tmp1<='0'tmp2<='1' when 7=>tmp<='0'tmp1<='0'tmp2<='1'

33、 when 8=>tmp<='0'tmp1<='0'tmp2<='1' when 9=>tmp<='0'tmp1<='0'tmp2<='1' when 10=>tmp<='0'tmp1<='0'tmp2<='1' when 11=>tmp<='0'tmp1<='0'tmp2<='1' when 12=>t

34、mp<='1'tmp1<='0'tmp2<='0' when 13=>tmp<='1'tmp1<='0'tmp2<='0' when 14=>tmp<='1'tmp1<='0'tmp2<='0' when 15=>tmp<='1'tmp1<='0'tmp2<='0' when 16=>tmp<='

35、1'tmp1<='0'tmp2<='0' when 17=>tmp<='1'tmp1<='0'tmp2<='0'cnt2<=0; end case; when "11"=> case cnt3 is when 0=>tmp<='0'tmp1<='1'tmp2<='0' when 1=>tmp<='0'tmp1<='1't

36、mp2<='0' when 2=>tmp<='0'tmp1<='1'tmp2<='0' when 3=>tmp<='0'tmp1<='1'tmp2<='0' when 4=>tmp<='0'tmp1<='1'tmp2<='0' when 5=>tmp<='0'tmp1<='1'tmp2<='0&#

37、39; when 6=>tmp<='0'tmp1<='1'tmp2<='0' when 7=>tmp<='0'tmp1<='1'tmp2<='0' when 8=>tmp<='0'tmp1<='0'tmp2<='1' when 9=>tmp<='0'tmp1<='0'tmp2<='1' when 10=>

38、tmp<='0'tmp1<='0'tmp2<='1' when 11=>tmp<='0'tmp1<='0'tmp2<='1' when 12=>tmp<='0'tmp1<='0'tmp2<='1' when 13=>tmp<='0'tmp1<='0'tmp2<='1' when 14=>tmp<='

39、;0'tmp1<='0'tmp2<='1' when 15=>tmp<='0'tmp1<='0'tmp2<='1' when 16=>tmp<='1'tmp1<='0'tmp2<='0' when 17=>tmp<='1'tmp1<='0'tmp2<='0' when 18=>tmp<='1'tmp1&

40、lt;='0'tmp2<='0' when 19=>tmp<='1'tmp1<='0'tmp2<='0' when 20=>tmp<='1'tmp1<='0'tmp2<='0' when 21=>tmp<='1'tmp1<='0'tmp2<='0' when 22=>tmp<='1'tmp1<='0&#

41、39;tmp2<='0' when 23=>tmp<='1'tmp1<='0'tmp2<='0'cnt3<=0; end case; end case; when "11"=> case div is when "00"=> case cnt0 is when 0=>tmp<='0'tmp1<='1'tmp2<='1' when 1=>tmp<='0&#

42、39;tmp1<='1'tmp2<='1' when 2=>tmp<='1'tmp1<='0'tmp2<='1' when 3=>tmp<='1'tmp1<='0'tmp2<='1' when 4=>tmp<='1'tmp1<='1'tmp2<='0' when 5=>tmp<='1'tmp1<='

43、;1'tmp2<='0'cnt0<=0; end case; when "01"=> case cnt1 is when 0=>tmp<='0'tmp1<='1'tmp2<='1' when 1=>tmp<='0'tmp1<='1'tmp2<='1' when 2=>tmp<='0'tmp1<='1'tmp2<='1'

44、when 3=>tmp<='0'tmp1<='1'tmp2<='1' when 4=>tmp<='1'tmp1<='0'tmp2<='1' when 5=>tmp<='1'tmp1<='0'tmp2<='1' when 6=>tmp<='1'tmp1<='0'tmp2<='1' when 7=>tmp&l

45、t;='1'tmp1<='0'tmp2<='1' when 8=>tmp<='1'tmp1<='1'tmp2<='0' when 9=>tmp<='1'tmp1<='1'tmp2<='0' when 10=>tmp<='1'tmp1<='1'tmp2<='0' when 11=>tmp<='1'

46、tmp1<='1'tmp2<='0'cnt1<=0; end case; when "10"=> case cnt2 is when 0=>tmp<='0'tmp1<='1'tmp2<='1' when 1=>tmp<='0'tmp1<='1'tmp2<='1' when 2=>tmp<='0'tmp1<='1'tmp2<

47、='1' when 3=>tmp<='0'tmp1<='1'tmp2<='1' when 4=>tmp<='0'tmp1<='1'tmp2<='1' when 5=>tmp<='0'tmp1<='1'tmp2<='1' when 6=>tmp<='1'tmp1<='0'tmp2<='1' whe

48、n 7=>tmp<='1'tmp1<='0'tmp2<='1' when 8=>tmp<='1'tmp1<='0'tmp2<='1' when 9=>tmp<='1'tmp1<='0'tmp2<='1' when 10=>tmp<='1'tmp1<='0'tmp2<='1' when 11=>tmp<

49、;='1'tmp1<='0'tmp2<='1' when 12=>tmp<='1'tmp1<='1'tmp2<='0' when 13=>tmp<='1'tmp1<='1'tmp2<='0' when 14=>tmp<='1'tmp1<='1'tmp2<='0' when 15=>tmp<='1'

50、;tmp1<='1'tmp2<='0' when 16=>tmp<='1'tmp1<='1'tmp2<='0' when 17=>tmp<='1'tmp1<='1'tmp2<='0'cnt2<=0; end case; when "11"=> case cnt3 is when 0=>tmp<='0'tmp1<='1'tmp2&

51、lt;='1' when 1=>tmp<='0'tmp1<='1'tmp2<='1' when 2=>tmp<='0'tmp1<='1'tmp2<='1' when 3=>tmp<='0'tmp1<='1'tmp2<='1' when 4=>tmp<='0'tmp1<='1'tmp2<='1' when 5=>tmp<='0'tmp1<='1'tmp2<='1' when 6=>tmp<='0'tmp1<='1'tmp2<='1' when 7=>tmp<='0'tmp1<='1'tmp2<='1' when 8=>tmp<='1'tmp1<='0'tmp2&