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Recent content by dainiss

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    [SOLVED] Simulation ! = Real Word

    In fact the DCM only allow to divide the clock to a maximum of 16. My bord work with 12MHz, so the mimimum would be 750KHz. not enought to get 1HZ and so on! The RESET signal is drive by an external switch and no debounce add to it because is working, is reseting the sistem. Is an external...
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    [SOLVED] Simulation ! = Real Word

    Yes, i´m aware that. I was to redo the entire managment clock with the DCM module but it would lose some time to familiarize myself with it and have to move on. Your idea sounds good too, but I ended up going to my mediated change a module already made ​​in one of the book's examples...
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    [SOLVED] Simulation ! = Real Word

    People. My code doesn´t give me any assincronous/latches/clock enable warnings. Only signals that aren´t being used. I have attached a better picture. It's now non-stop working :) All Synchronous signal stand according to the following form: process (<Clock>) begin *** *** if (<Clock> 'event...
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    [SOLVED] Simulation ! = Real Word

    ok i´m goingo to do new simlutations test. this time for failure. I have an assynchronous RST switch i you can see in the image. https://obrazki.elektroda.pl/9133271300_1369833097.png
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    [SOLVED] Simulation ! = Real Word

    Hi I am experiencing bad times with my project with a spartan 3A XC3S200A fpga. What happens is that the project works perfectly in simulation (ISIM) but when programming the fpga the result is not entirely expected. Works for a while and then completely blocks. I'm suspicious that exist delays...
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    SoCs concepts and manufacters

    ok.. more clear now thank you regards
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    SoCs concepts and manufacters

    I've been studying the implementation of single board computers, and started to see the types of architectures from ARM RISC processors and SoC's. Now there are things that I can not clarify. My questions are: 1 to implement a single-board computer, for example, in the format PC104, we need...
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    [SOLVED] shift range of voltage of [0V-3,8V] to [0V-10V].How?

    yes. a non inverter opamp will do. my question goes to my litle treasures depressing :-/
  9. D

    [SOLVED] shift range of voltage of [0V-3,8V] to [0V-10V].How?

    i i can shift a range of voltage of 0V-3.8V to 0V-10V. is there any opamp who do the job? i think it would be better to make a normalization of the signal. so that 0V-3.8V => 0V-1V and them with an opamp =>0V-10V. anyone have another suggestion? thank
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    question about analog delay

    true. i cannot see other solution too.
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    question about analog delay

    i think you need something like this. i can only tell you that the time constant of a capacitor tc = C*R, like n this circuit. or maybe you need something like this: **broken link removed**
  12. D

    question about analog delay

    if the pulse is the only source, storing the same signal at the output you would never have all the 3V, because off losses. you would need an amplifier. Jiripolivka is right, try to look at this https://www.analog.com/static/imported-files/tutorials/MT-090.pdf
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    question about analog delay

    so suddenly I'd say it would be necessary to store the pulse in the condenser. then applied to a gate of a transistor with an RC circuit time constant set to 0.5 seconds. after that time the transistor circuit would triggered the stored pulse
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    piezoelectric sensors

    thanks it's not for any specific project. its just a study that i´m doing that, probably, i will need in the future. the ideia is to make a list containing the best amplifier circuit (discrete or integrated) to the respective sensor which in turn is used for a particular application. one more...
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    Header error Control (HEC) in ATM

    An ATM receives a cell wihth a the header 0x 00 00 00 07 68. how can I see if this cell get an error during the transmission? thank.

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