序列檢測器的設計 實驗報告

1、EDA實驗報告書 姓名xxx 學號xxxxxxx 實驗時間課題名稱序列檢測器的設計實驗目的1.用狀態(tài)機實現(xiàn)序列檢測器的設計2.了解一般狀態(tài)機的設計與應用設計要求1.采用VHDL語言設計序列檢測器，具體要求如下：（1）檢測序列為“10101110”。該序列從左到右依次進入檢測器，如果檢測到完整序列，檢測器輸出為1，反之輸出為0。（2）利用Quatus II軟件生成狀態(tài)轉移圖。（3）對該檢測器進行仿真，得到仿真波形。2.采用狀態(tài)圖編輯方法設計序列檢測器，檢測序列為“11010101”。具體要求為（1）對電路進行仿真，得到仿真波形。（2）將該電路圖轉化成VHDL語言形式。設計思路序列檢測器可用于檢測

2、一組或多組由二進制碼組成的脈沖序列信號，當序列檢測器連續(xù)收到一組串行二進制碼后，如果這組碼與檢測器中預先設置的碼相同,則輸出為1，否則輸出為0.由于這種檢測的關鍵在于正確碼的收到必須是連續(xù)的，這就要求檢測器必須記住前一次的正確碼及正確序列，直到在連續(xù)的檢測中所收到的每一位碼都與預置數(shù)的對應碼相同。在檢測過程中，任何一位不相等都將回到初始狀態(tài)重新檢測。設計原理圖及源程序LIBRARY IEEE; USE IEEE.STD_LOGIC_1164.ALL;ENTITY AA ISPORT ( CLK ,DIN,RST : IN STD_LOGIC; SOUT : OUT STD_LOGIC;END

3、AA;ARCHITECTURE behav OF AA IS TYPE states IS (s0, s1, s2, s3,s4,s5,s6,s7,s8); SIGNAL ST,NST : states :=s0 ; BEGIN COM : PROCESS(ST,DIN) BEGIN CASE ST IS WHEN s0 = IF DIN = 1 THEN NST = s1;ELSE NST IF DIN = 0 THEN NST = s2;ELSE NST IF DIN = 1 THEN NST = s3;ELSE NST IF DIN = 0 THEN NST = s4;ELSE NST

4、IF DIN = 1 THEN NST = s5;ELSE NST IF DIN = 1 THEN NST = s6;ELSE NST IF DIN = 1 THEN NST = s7;ELSE NST IF DIN = 0 THEN NST = s8;ELSE NST IF DIN = 0 THEN NST = s2;ELSE NST NST = st0; END CASE ; END PROCESS; REG: PROCESS (CLK,RST) BEGIN IF RST=1 THEN ST=s0; ELSIF ( CLKEVENT AND CLK=1) THEN ST=NST; END

5、IF; END PROCESS REG; SOUT=1WHEN ST=s8 ELSE 0 ;END behav;仿真波形圖實驗結果LIBRARY ieee;USE ieee.std_logic_1164.all;ENTITY SM1 IS PORT ( clock : IN STD_LOGIC; reset : IN STD_LOGIC := 0; input1 : IN STD_LOGIC := 0; input2 : IN STD_LOGIC := 0; output1 : OUT STD_LOGIC );END SM1;ARCHITECTURE BEHAVIOR OF SM1 IS TY

6、PE type_fstate IS (st1,st2,st3,st4,st5,st6,st7,st8,st0); SIGNAL fstate : type_fstate; SIGNAL reg_fstate : type_fstate;BEGIN PROCESS (clock,reset,reg_fstate) BEGIN IF (reset=1) THEN fstate = st1; ELSIF (clock=1 AND clockevent) THEN fstate = reg_fstate; END IF; END PROCESS; PROCESS (fstate,input1,inpu

7、t2) BEGIN output1 IF (input1 = 1) AND (input2 = 1) THEN reg_fstate = st2; ELSE reg_fstate = st0; END IF; output1 IF (input1 = 1) AND (input2 = 1) THEN reg_fstate = st3; ELSE reg_fstate = st0; END IF; output1 IF (input1 = 1) AND (input2 = 1) THEN reg_fstate = st4; ELSE reg_fstate = st0; END IF; outpu

8、t1 IF (input1 = 1) AND (input2 = 1) THEN reg_fstate = st5; ELSE reg_fstate = st0; END IF; output1 IF (input1 = 1) AND (input2 = 1) THEN reg_fstate = st6; ELSE reg_fstate = st0; END IF; output1 IF (input1 = 1) AND (input2 = 1) THEN reg_fstate = st7; ELSE reg_fstate = st0; END IF; output1 IF (input1 =

9、 1) AND (input2 = 1) THEN reg_fstate = st8; ELSE reg_fstate = st0; END IF; output1 IF (input1 = 1) AND (input2 = 1) THEN reg_fstate = st3; ELSE reg_fstate = st0; END IF; output1 IF (input1 = 1) AND (input2 = 1) THEN reg_fstate = st1; ELSE reg_fstate = st0; END IF; output1 output1 = X; report Reach undefined state; END CASE; END PROCESS;END BEHAVIOR;問題討論1. 利用序列檢測器設計簡易數(shù)字密碼鎖。先輸入一個密碼，然后在程序中設定一個你