library ieee - 副本

1、蝸牛的染色體學(xué)院 電子設(shè)計(jì)自動(dòng)化實(shí)驗(yàn)報(bào)告 姓名：吃一口羊羔肉 學(xué) 號(hào)：一口吃羊羔肉 班 級(jí)：吃羊羔肉一口 實(shí)驗(yàn)內(nèi)容：多路波形發(fā)生器 指導(dǎo)教師： 羊羔肉吃一口 報(bào)告日期：多路波形發(fā)生器實(shí)驗(yàn)1. 實(shí)驗(yàn)要求1.1.對(duì)輸入時(shí)鐘信號(hào)進(jìn)行分頻，實(shí)現(xiàn)三路互差120度的信號(hào)。1.2.實(shí)現(xiàn)輸出信號(hào)的占空比例控制。其中clk ：輸入時(shí)鐘信號(hào)；reset：同步復(fù)位信號(hào)（低電平有效）；div ：輸入分頻控制信號(hào)（6n分頻）；ctrl ：占空比例控制信號(hào)，其中 當(dāng)ctrl=1時(shí)，占空比為1：1； 當(dāng)ctrl=2時(shí)，占空比為1：2； 當(dāng)ctrl=3時(shí)，占空比為2：1；A,B,C：三路輸出信號(hào)。2.設(shè)計(jì)思路2.1 clk

2、：時(shí)鐘輸入，設(shè)置為上升沿觸發(fā)；2.2.reset：題目要求同步復(fù)位，故應(yīng)將時(shí)鐘輸入作為reset 觸發(fā)的必要條件。2.3.div ：題目要求為6分頻，用二進(jìn)制表示為 (110)2,(1100)2，（100100)2以此類(lèi)推。當(dāng)temp計(jì) 數(shù)是遇到上述數(shù)字便清零重新技術(shù)以實(shí)現(xiàn)6n分 頻。2.4.ctrl ：占空比為三種，分別用（01）2，（10）2，（11） 2表示。然后用temp中3位0和1的個(gè)數(shù)比例 來(lái)控制占空比。占空比=1的個(gè)數(shù)/(0的個(gè)數(shù)+1 的個(gè)數(shù)) 又因?yàn)轭}目要求相位角互差120度，即三個(gè)輸出 依次領(lǐng)先前一位4個(gè)輸入字符。即若A(0)=1，則 B(4)=1，C(8)=1。A(0)B(

3、4)C(8)為同相位。2.5.temp: 聲明三個(gè)變量，其中 temp為三位，分別對(duì)應(yīng)于A(yíng)，B，C。用于輸出。 temp2與temp3用于計(jì)數(shù)分頻。3. 程序流程圖是時(shí)鐘存在且出現(xiàn)高電平Temp3+1否判斷分頻比DIVReset是否為零是Temp=000否1分頻，temp3在外層DIV=0DIV=16分頻，temp3在內(nèi)層Ctrl=01占空比1：1判斷ctrl占空比1：2Ctrl=10Ctrl=11Ctrl=00占空比2：1直接給04. 源程序一library ieee;use ieee.std_logic_1164.all;use ieee.std_logic_arith.all;use i

4、eee.std_logic_unsigned.all;entity zonghe 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 zonghe;architecture behave of zonghe issignal tmp:std_logic; signal tm

5、p1: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) begin if clk'event and clk='1' then if resetb='0' then cn

6、t0<=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 "01"=> case div is when "00"=> case cnt0 is when 0

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

8、9;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'tmp2<='0' when 1=>tmp<='0'tmp1<='1'

9、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<='1' when 5=>tmp<='0'tmp1<='0'tmp2<='1&

10、#39; 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=>tmp<='1'tmp1<='0'tmp2<='0' when 10=>

11、;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<='1'tmp2<='0' when 1=>tmp<='0'tmp1<

12、;='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'tmp2<='1' when 5=>tmp<='0'tmp1<='1'tmp

13、2<='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' when 9=>tmp<='1'tmp1<='0'tmp2<='1'

14、; 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=>tmp<='1'tmp1<='0'tmp2<='0' when 14=&g

15、t;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<='1'tmp1<='1'tmp2<='0'cnt2<=0; end case; w

16、hen "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'tmp2<='0' when 3=>tmp<='0'tmp1<='1'

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

18、#39; 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=&

19、gt;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<='1'tmp1<='0'tmp2<='1' when 16=>tmp<=&

20、#39;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'tmp1<='0'tmp2<='0' when 20=>tmp<='1'tm

21、p1<='1'tmp2<='0' when 21=>tmp<='1'tmp1<='1'tmp2<='0' when 22=>tmp<='1'tmp1<='1'tmp2<='0' when 23=>tmp<='1'tmp1<='1'tmp2<='0'cnt3<=0; end case; end case; when "10&

22、quot;=> 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<='0'tmp1<='0'tmp2<='1' when 3=>tmp<='0&

23、#39;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"=> case cnt1 is when 0=>tmp<='0'tmp1<='1'tmp2

24、<='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' when 4=>tmp<='0'tmp1<='0'tmp2<='1'

25、 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=>tmp<='1'tmp1<='0'tmp2<='0' when 9=>tmp&

26、lt;='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 "10"=> case cnt2 is when 0=>tmp<='0'tmp1<=&#

27、39;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' when 4=>tmp<='0'tmp1<='1'tmp2<

28、;='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' when 8=>tmp<='0'tmp1<='0'tmp2<='1' wh

29、en 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=>tmp<='1'tmp1<='0'tmp2<='0' when 13=>tmp

30、<='1'tmp1<='0'tmp2<='0' when 14=>tmp<='1'tmp1<='0'tmp2<='0' when 15=>tmp<='1'tmp1<='0'tmp2<='0' when 16=>tmp<='1'tmp1<='0'tmp2<='0' when 17=>tmp<='1&

31、#39;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'tmp2<='0' when 2=>tmp<='0'tmp1<='1'tmp2

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

33、 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=>tmp<='0'tmp1<='0'tmp2<='1' when 11=>tm

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

35、'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'tmp1<

36、;='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'tmp2<='0' when 23=>tmp<='1'tmp1<='0'

37、;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'tmp1<='1'tmp2<='1' when 2=>tmp<='1'

38、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<='1'tmp2<='0'cnt0<=0; end case; when "01"=>

39、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' when 3=>tmp<='0'tmp1<='1'tmp2<='1' whe

40、n 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<='1'tmp1<='0'tmp2<='1' when 8=>tmp<=

41、'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'tmp1<='1'tmp2<='0'cnt1<=0; end case; when "1

42、0"=> 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<='1' when 3=>tmp<='0'tmp1<='1'tmp2<=&#

43、39;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' when 7=>tmp<='1'tmp1<='0'tmp2<='1' when 8

44、=>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<='1'tmp1<='0'tmp2<='1' when 12=>tmp<=

45、'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'tmp1<='1'tmp2<='0' when 16=>tmp<='1't

46、mp1<='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<='1' when 1=>tmp<='0'tmp1<='1'tmp2<

47、='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' whe

48、n 6=>tmp<='0'tmp1<='1'tmp2<='1' when 7=>tmp<='0'tmp1<='1'tmp2<='1' when 8=>tmp<='1'tmp1<='0'tmp2<='1' when 9=>tmp<='1'tmp1<='0'tmp2<='1' when 10=>tmp<

49、='1'tmp1<='0'tmp2<='1' when 11=>tmp<='1'tmp1<='0'tmp2<='1' when 12=>tmp<='1'tmp1<='0'tmp2<='1' when 13=>tmp<='1'tmp1<='0'tmp2<='1' when 14=>tmp<='1'

50、tmp1<='0'tmp2<='1' when 15=>tmp<='1'tmp1<='0'tmp2<='1' when 16=>tmp<='1'tmp1<='1'tmp2<='0' when 17=>tmp<='1'tmp1<='1'tmp2<='0' when 18=>tmp<='1'tmp1<=

51、9;1'tmp2<='0' when 19=>tmp<='1'tmp1<='1'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

52、<='0' when 23=>tmp<='1'tmp1<='1'tmp2<='0'cnt3<=0; end case; end case; when "00"=>tmp<='0'tmp1<='0'tmp2<='0' end case; end if; end if; end process; aclk<=tmp; bclk<=tmp1; cclk<=tmp2;end behave;7源程

53、序二library ieee;use ieee.std_logic_1164.all;use ieee.std_logic_unsigned.all;entity waveform isport (clk,reset,div : in std_logic;ctrl : in std_logic_vector(1 downto 0);a,b,c : out std_logic);end entity waveform;architecture one of waveform isbegin process(clk,reset,div,ctrl)variable temp : std_logic_

54、vector(2 downto 0);variable temp2,temp3: std_logic_vector(3 downto 0); begin if clk'event and clk='1' then temp3:=temp3+1; if reset='0' then temp:="000" elsif div='1' then if temp3="0110" then temp3:="0000" temp2:=temp2+1;if temp2="1100&

55、quot; then temp2:="0000"end if; end if; end if; if div='0' then temp2:=temp2+1; if temp2="1100" then temp2:="0000"end if;if temp3="0110" then temp3:="0000"end if; end if; if ctrl="01" then case temp2 iswhen "0000" =>temp:="101"when "0001" =>temp:="101"when "0010" =>temp:="001"when "0011" =>temp:="001"when "