We have a Kintex KC705 evaluation kit. We have planned to use it to test a chip which works at 10Gbps. Kinte would generate input bits to the chip and also would receive the bits which are out of the chip.(J19,J20 as Tx, J17,J66 as Rx on the board (Board diagram from http://www.xilinx.com/support/documentation/boards_and_kits/kc705/ug810_KC705_Eval_Bd.pdf))
My question here is, what must be the common mode voltage that one has to provide so that FPGA board can detect the signal? Also, what is the minimum swing that kit can detect?
Thanks in advance
You shoudl be using GTX on the Kintex-7 device with this evaluation kit to acheive this.
You can take cue's from the Kintex-7 datasheet TX switching characteristics to know the CM voltage that you should be giving at the output of your test chip. Check pg 50, table 52 for the details on this - http://www.xilinx.com/support/documentation/data_sheets/ds182_Kintex_7_Data_Sheet.pdf