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Recent content by happytronic

  1. H

    Using internal oscilator on an FPGA

    what I meant is i want to use the internal oscilator circuit (located on the botom right side of the FPGA) that is to be used with an external crystal. And I know for sure that the 4000 series has one because I used it! one was even present on the 3000 series. Happytronic
  2. H

    Using internal oscilator on an FPGA

    Hi everyone, I did a FPGA based design using Xil*Fouldation and a VHDL program, I was using an oldy XC4032A but was unable to assign the internal oscilator to my clock signal; I had to create a macro of the VHDL and use the schematic editor for it to work. I would think it is possible to do it...
  3. H

    Schmitt input for xilinx's spartan2 design.

    I think the inputs are by definition kind of shmit triggers, as you can set input levels to TTL or CMOS. a '1' is detected for a certain analogue level, which isn't the same as a '0'. But if you want to debounce a signal digitaly for a switch, a shmit trigger is not what you need, as the input...
  4. H

    Use chipscope to capture some signals from my FPGA

    chipscope Hi, I do not know much about chipscope, but mabe you need a pullup on your "done" signal???, this can be done internaly to the FPGA I would think. give me feedback please, I'm interested.
  5. H

    MP3 player to target an FPGA

    These postes were not realy so helpfull. I think I'll probably just use already existing decoder chips and software incoder and use FPGA resources for other things. I will still keep on searching for the precious synthesisable code. thanks for the reply anyway Happytronic
  6. H

    MP3 player to target an FPGA

    Hello, You probably came across this question before, but I need some VHDL or handel-c source files to implement robust MP3 decoder and/or MP3 encoder on an FPGA. If any one is able to give the source code or help me out on this one, please poste. Best regards Happytronic
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