I'm plugging in the SuperSpeed Explorer kit using the top pins and wires like these: http://cloud6.lbox.me/images/384x384/201211/40p-dupont-jumper-wire-cable-line-1p-1p-pines-21-5cm_bazbaf1354250200243.jpg of 10cm length and it works fine at frequencies up to 65MHz (max i tested). Using 3.3v LVTTL and 4mA drive strength in altera pin planner (make sure to set jumper on explorer board to 3.3v as well). At 8mA drive strength the wires had too much interference from one another at >30MHz.
okay, but could I connect directly like in the photo below ( I am actually working with a De0 Nano Cyclone IV FPGA and it has the same size as the EZ USB FX3 kit so I wanted to connect them directly)
But in the case where I should use the wires you showed me, I should connect which pin to which pin ?
I'm just getting started with the FPGA and I don't know how to connect them
Thank you very much
You will have to look at the DE0 schematic and see how the exposed pins map to the FPGA package.
Then find the appropriate ones to connect to DQ[31..0] and CTL[15..0] as well as PCLK (you might want PCLK to be output of a PLL, for example).
I doubt you can just use a ribbon cable/direct male to female mating to connect, because some of the pins on the superspeed explorer are 5V power pins, which will DESTROY your fpga if connected to, and some are GND, which you should connect to corresponding GND pins (you might be able to get away by connecting them to IO pins on the FPGA if you run out of GND pins, just make sure to set those IO pins on the FPGA to output, and drive a 0 on them)