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Recent content by joanna_seczkowska

  1. J

    spartan 3an & lvpecl 3v3

    I've created schematic using single CLK input. Then I've changed the input using ibufgds primitive (naturally inputs were renamed to clk_p and clk_n) Now I want to modify timing constraint to reflect changes. But still there is only clk net available. Moreover there is only clk pin available...
  2. J

    actel against Xilinx competition

    I run the same project once on spartan 3 and then on proasic (actel) On Xilinx design evironment I received 94.5 MHz estimated frequency (by usuing LUT's). On Actel design environment (by using RAM) I got 16MHz estimated frequency Does anyone know what should be considered (in project...
  3. J

    How to understand memory specification in Verilog?

    memory in verilog reg [13] RAM [2]; How big this ram actually is? is it 14bits by 3 slots or 14x8 slots ? by incrementing counter we get cell adresses from 0 to 7 and by shifting 1 we get 3 x 14 bit memory ocupation. What is right? I thought that it is 14x3 but after studying the fifo...
  4. J

    Altium spice model simulation

    I have imported LT op amp simulation sub circuit model from LTSpice library (.mod) file. I did it by simply changing ext from .mod to ckt. Altium Accepted this model. However when it came to simulation it looks Altium does not understand SPICE. The line which cause error: ESHD1 88 0...
  5. J

    Scale factor in a PI controller

    I don't know what You control, but error is always as difference. However, You should calculate system gain. So You have to create open loop, and send range of input signals in whole range (PWM in your case). Note system output, and calcualate gain = So/Si. Then You should repeat experiment from...
  6. J

    Manufacturing Management/control systems?

    Each manufacturing process has a variety of software. If You are interested in names You should browse the web. About software and PLC , usualy software is distributed with IO hardware . So connecting PLC is pretty straightforward
  7. J

    Suggest me a cheap ARM evaluation board and IDE

    Re: ARM Newbie Do You know who is distributing Philips LPC2000 in Europe?
  8. J

    How can I instruct the mspgcc to output the texas ti.txt format ?

    Re: MSP question Could You explain what is the use of such converter
  9. J

    MSP430 and mspgcc Compiler

    check mspgcc.sourceforge.net
  10. J

    How to create a file with symbols in GCC

    gcc mapfile If You are aware of what .map or .sym file is what else do you need? it's not clear
  11. J

    help on MSP430 I2C programming

    msp430 i2c programming registers are not accessible directly from C. You should inline assembly code to access registers. There are also certain rules about C function parameters, like first r15 etc. So You may be aware what register is used.
  12. J

    tell me bout embedded linux

    try www.uclinux.org/
  13. J

    tell me bout embedded linux

    try www.beyondlogic.org

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