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Recent content by ikevin

  1. I

    Need help with "expecting ')', found '['" error in

    That's what I've been suspecting... since this is the first time I use multi-dimensional vector in Verilog (with Xilinx)
  2. I

    Need help with "expecting ')', found '['" error in

    When I pasted the code, I added bold and messed it up, but the comma is there in the code. The error still occurs though :(
  3. I

    Need help with "expecting ')', found '['" error in

    Hi, I have a 2-tap FIR filter module as shown below. However, Xilinx kept complaining The lines that have error are shown in BOLD EDITED: added comma.
  4. I

    Differential inputs & outputs in Verilog

    Thanks for helping TA37. Do you know if I can instantiate the buffers inside the top level module as the following? module differential_signals_test_top ( input CLOCK_IN_P, input CLOCK_IN_N, input [15:0] DATA_IN_P, input [15:0] DATA_IN_P, //output CLOCK_OUT_P, //output CLOCK_OUT_N, output [15:0]...
  5. I

    Differential inputs & outputs in Verilog

    Hi, I have a Virtex 5 board and I would like to interface a high-speed DAC and ADC to it. I have differential 16 bits data and 1 clock in + 1 clock out total. Can I do something like this for differential signals? // ADC part // check Postive and Negage parts of the clock always @...
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    Amazing! Invite Venus standing on PCB.

    Hi shantf, Are you from pcbwing.com, I plan to use the service to try out a 4x4 inches 2 layers pcb. How many days would I get it from the day I send out the gerbers? Thanks.
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    Altium Designer 8: how to serpentine to match diff. pairs?

    Hi, I'm trying to match pair to pair (diff pair) by doing serpentine. Is there a tutorial to show how to it? Can be it done automatically by the software? Thanks,
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    Altium Designer 8: Add netclass in PCB but cann't update sch

    Thanks guys, this kinda sucks since it doesnt have one place like a net class manager for both pcb/schm...
  9. I

    RF/DC Ground Consideration

    RF_GND and DC_GND must be connected at some point, otherwise they will have different references and that might burn your circuit. Usually you route your RF signals with reference to RF_GND plane then everything else you reference to some other ground plane, let's call it DC_GND. Finally...
  10. I

    Altium Designer 8: Add netclass in PCB but cann't update sch

    Re: Altium Designer 8: Add netclass in PCB but cann't update So netclasses can only be pushed from schematic to pcb? I don't see anywhere to add netclasses in schematic though :(
  11. I

    Altium Designer 8: Add netclass in PCB but cann't update sch

    Hello, I am new to Altium designer. I've been trying to add net classes in PCB, Design->Classes.. then Update the schematic but it kept giving the error "None of the 1 differences detected can be resolved by automatically generated ECOs" Then it shows me the different: "Extra net classes" I...
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