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1、VHDL实验之T触发器与T触发器实验环境：WindowsXP仿真软件：QuartusIIv5.0设计方法：行为描述法T触发器功能概述CP=0时，触发器不工作，处于维持状态CP=1时，触发器的功能如下：T=0时，次态=现态;T=1时，次态与现态相反：触发器翻转T触发器状态转移真值表T触发器激励表TQn+10Qn1NOT(Qn)Qn Qn+1T000011101110T触发器实验编码LIBRARY IEEE;USE IEEE.std_logic_1164.ALL;ENTITY basic_tff ISPORT( T : IN std_logic; CP: IN std_logic; Q : OUT
2、 std_logic; QB: OUT std_logic );END basic_tff;ARCHITECTURE rtl OF basic_tff IS SIGNAL q_temp:std_logic;BEGINPROCESS(CP)BEGIN IF(CPevent AND CP =1)THEN IF(T =1)THEN q_temp = NOT q_temp; ELSE q_temp = q_temp; END IF; END IF;END PROCESS;Q = q_temp;QB = NOT q_temp;END rtl;T触发器功能概述CPCP=0时，处于维持状态CP=1时，次态与
3、现态相反：触发器翻转T触发器实验编码LIBRARY IEEE;USE IEEE.std_logic_1164.ALL;ENTITY Extended_tff ISPORT( CP :IN std_logic; Q :OUT std_logic; QB:OUT std_logic);END Extended_tff;ARCHITECTURE rtl OF Extended_tff IS SIGNAL q_temp:std_logic;BEGIN PROCESS(CP) BEGINIF(CPevent AND CP =1) THEN q_temp = NOT q_temp;ELSE q_temp = q_temp;END IF; END PROCESS; Q = q_temp; QB = NOT q_temp;END rtl;演示完毕，谢谢制作人：仝珂
