Wrong usage of signals in FMC connector
Signals
TDC_IN_FPGA_1
TDC_IN_FPGA_2
TDC_IN_FPGA_3
TDC_IN_FPGA_4
use pins that are routed to dedicated Gigabit link pins in the FPGA.
Apart from not complying to the FMC norm, this would not work.
Signals
TDC_IN_FPGA_5
TERM_EN_4
TERM_EN_5
are assigned to pins in the FMC connector, that according to the FMC
norm are dedicated pins and not general purpose I/O.