vivado未知错误记录

CLKC #1 Advisory The MMCME3 cell sgmii_top_sync_ins2/pcs_instance_1/inst/core_clocking_i/mmcme3_adv_inst has COMPENSATION value BUF_IN, but CLKOUT0 output drives sequential cells directly connected to ports. In order to achieve insertion delay and phase-alignment for the sequential cells directly connected to ports, a COMPENSATION of ZHOLD must be used. (The problem cell is rst_n_IBUF_inst/IBUFCTRL_INST (in rst_n_IBUF_inst macro).)

CLKC #3 Advisory The MMCME3_ADV cell sgmii_top_sync_ins6/pcs_instance_1/inst/core_clocking_i/mmcme3_adv_inst CLKIN1 or CLKIN2 pin is driven by global Clock buffer(s) sgmii_top_sync_ins6/bufg_ins_e_clk125 and does not have a LOC constraint. It is recommended to LOC the MMCM and use the CLOCK_DEDICATED_ROUTE constraint on the net(s) driven by the global Clock buffer(s).

CLKC #1 The MMCME3 cell refclk/inst/mmcme3_adv_inst has COMPENSATION value ZHOLD, but CLKOUT1 output drives sequential IO cells. In order to achieve insertion delay and phase-alignment for the IO sequential cells, CLKOUT0 must be used.