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Recent content by steph

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    Questions about termination and PCB layout

    Hi First, A serial resistor should be place close of the driver. a pull down should be place close of receiver. It is depend of FPGA but a serial resistor or termination is not necessary if Xilinx have FPGA with teminal pins. I expect that is a 50 ohm trace. Take care to have a 50 ohm...
  2. S

    What are the rules for pcb layer stackup?

    Re: pcb layer stackup Hi A plane should be necessary, if you need an impedance control. It is always better to have one for noise immunity(analog section), emi etc.... but it is really not necessary. Go on www.pcblibraries.com probably it should help you for beginner Steph
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    The relationship between track and via size

    via size versus current Hi Neena In my case, You do not need to know the track for a line width. But you have to know the current needed? use via in trace calculator from **broken link removed** Steph
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    What do you think about CCS ICD for PIC?

    ccs icd u40 clone ICD-U40 from ccs is faster than icd from microchip. But if you have a problem tech support is very slow. I sent a question 4 days ago, i have never had an answer.
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    ICD-U40 connection and firmware help

    icd-u40 firmware Hi I just received my ICD U40. i connect it to me computer. Win XP The computer detect my ICD. I installed the driver. When i communicate for first time, the software ask me to update Firmware. i did it. MY problem: when i try to communicate with the icd, the icd...

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