在VHDL中,用语句( ) A. clock’EVENT B. clock’EVENT AND clock=’1’ C. clock’EVENT AND clock=’0’ 一、单项选择题:(20分) 1.IP核在EDA技术和开发中具有十分重要的地位;提供用VHDL等硬件描述语言描述的功能块,但不涉及实现该功能块的具体电路的IP核为__A__。 A .软IP B.固IP C.硬IP D...
在VHDL中,可以用语句(clock’ event and clock=’0’) 表示检测clock下降沿。ENTITY EXAMPLE ISPORT(A,B,C: IN
PORT(EN,CLK,SIN:IN STD_LOGIC;SIG_OUT:OUT STD_LOGIC);END KUOPIN1;ARCHITECTURE ONE OF KUOPIN1 ISSIGNAL TEMP:STD_LOGIC_VECTOR(62 DOWNTO 0);BEGINPROCESS(EN,SIN)CONSTANT PN63:STD_LOGIC_VECTOR(62 DOWNTO 0):="110010010101001101000010001011011111101011100011001110110000011";CONSTANT PN63_NOT:STD_LOGIC_...
You can't directly control an output port from a process in VHDL 93. The idea is that for the hardware to be able to maintain a value on a signal outside of a clock edge, it needs to be able to read back the signal value, which is not possible with an output port. You can ...
Hello eveyone, I am trying to design a FSM in VHDL. The FSM has 4 states. s0 => Led flasher i.e. on/off with specific period and duty cycle s1 => addition...
In order to work with low frequency signals (<10 kHz), I would like to design with a tickle (frequency approx. 100 kHz). It will reduce counters size, power consumption... PROCESS (CLK, RST_n) BEGIN – PROCESS IF RST_n = '0' THEN Outsignal <= '0'; ELSIF CLK'event ...
Error (10818):vhdl Error (10818):Can't infer register for "a0[0]" at shiftreg.vhd(96) because it does not hold its value outside the clock edgePROCESS(clk_in,clk_5)BEGINIF clk_5'EVENT AND clk_5='1' THENa16 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 一...
I'm in the process of trying to route a spartan6 design .I have a MPMC module that implements a LPDDR memory running at 400 mhz .I use a clock generator core to feed the 400Mhz and 400Mhz 180 phase to the MPMC .In the clock generator configuration menu i can choose to use a bu...
process(CLK_IN,RESET_IN) begin if RESET_IN = '0' then Q<="00000000"; end if; if rising_edge(CLK_IN) then Q<="11111111"; end if; end process; LEDS_OUT<=Q; end Behavioral; I only see the first 4 LEDS active on the Board. ...
UP3_CLOCK完整版附代码 一、 实验目的 在UP3开发板上设计实现一时钟，通过时钟设计掌握VHDL 状态机设计方法，了解UP3的LCD 液晶屏的使用方法，并进一步巩固VHDL 语言。二、实验任务 1、阅读理解CLOCK.VHD 代码，了解其对液晶屏（型号为1602）的控制方法，UP3液晶屏控制器编程方法详见参考文献【1】21－29页；2、 ...