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Recent content by nba83

  1. N

    simple logic circuit for 1/X

    tnx for replys, what do you mean by divide in a LUT?
  2. N

    Is a CPLD right for this?

    you can use XC9572 CPLDs which are 5 volt compliant and also there are 5v versions, they come in PLCC package
  3. N

    simple logic circuit for 1/X

    hi i want to implement a simple logic circuit in CPLD (XC9572) which does this operation (1/X + X * 4 ) . what is the efficient way of calculating 1/X. X is a 12 bit number. I already done the multiplication part but don't have any ideas about how to efficiently do the 1/x part. should I go for...
  4. N

    how to compare the two phase difference width for two signals?

    for my information, how you are simulating your design?
  5. N

    How test inputs outputs (IOs) of SRAM based FPGA Virtex-5

    i think if the output ports are assigned to some input pins in that case chipscope can track them, I'v done this to verify the signals on Ethernet phy layer chip, if you want to verify all by software then I think chipscope is the way to go, otherwise you need logic analyzer to verify signals.
  6. N

    How test inputs outputs (IOs) of SRAM based FPGA Virtex-5

    so what if chipscope is tracing the I/O signalS? right! in that case, it can verify what is in and out of FPGA
  7. N

    How test inputs outputs (IOs) of SRAM based FPGA Virtex-5

    use chipscope core in your design to see the signals generated in hardware, you can see if everything is generated well or not
  8. N

    Eagle_2_Protel pcb file converter

    i used the Eagle4-1.ulp in eagle 6.2 soft to convert my eagle pcb to altium designer pcb, but the problem is that in the converted pcb file the signals and pads on top and bottom layer became multilayer and everything is messed up :( any one knows what's the problem? any solution to convert...
  9. N

    Interfacing Spartran 3 board with pc using USB

    there are some usb cores available at opencore have u tried that?
  10. N

    [SOLVED] Interrupt vector priority in Arm Cotex microcontrollers(Stm32F10x)

    my problem was solved. this micro have exactly what i need , this link explains how to do so ,it might be helpful for some one **broken link removed**
  11. N

    [SOLVED] Interrupt vector priority in Arm Cotex microcontrollers(Stm32F10x)

    i have put it in the topic !!! Stm32f107
  12. N

    Help me to understand this program is true or wrong

    you cannot use unsigned char in function calls , in send_bit(unsigned char bit_out );TX_byte(unsigned char Tx_buffer ); must be send_bit(bit_out );TX_byte(Tx_buffer ); and in defining local variable,it must not be the same as function input parameters unsigned char RX_byte(unsigned...
  13. N

    [SOLVED] Interrupt vector priority in Arm Cotex microcontrollers(Stm32F10x)

    hi i have two interrupts in my project, i have priority high for interrupt 1 and priority low for interrupt 2. the issue is when low priority ISR is being executed if interrupt high priority occurs it is not executed immediately. what i want is that interrupt with high priority being executed...
  14. N

    Flash programming At91Sam7x512- Read Flash contents

    hi i am trying to protect read flash content of my project which is on At91Sam7x512 with keil. is it possible to read flash content memory through jtag?? if so how should we lock reading from it? what about other programming tools such as samba? tnx
  15. N

    ethernet 10M in bus cofiguration

    is it possible to have a bus topology with a phy layer chip which is compliant with ieee802.3 standard? i want to put the phy chips(rtl8201) on the same cable, the speed is not important , only shared medium is important for me.
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