# Clocks create_clock -name clk_125 -period 8 [get_ports CLK_125M] create_clock -name clk_xcvr_ref -period 1.551 [get_ports CLK_QSFP_OSC] create_clock -name clk_pcie1 -period 10 [get_ports CLK_PCIE1] create_clock -name clk_pcie2 -period 10 [get_ports CLK_PCIE2] derive_pll_clocks derive_clock_uncertainty # Exceptions set_false_path -to [get_ports {LEDS[*]}]