spyglass cdc检查约束

1：set_asyncrst_ignore_path

eg：set_asyncrst_ignore_path -from [get_pins ${DSIR_HIRE}dsi_rx_ss_1/DWC_mipidsi2_device/u_regbank/phy_rstz_reg_0_/Q] -to_clock {hsrx_word_clk_d0_div2_dsi_rx_ss_1}

2：set_cdc_ignore_path -from -to

eg：set_cdc_ignore_path -from ${DSIR_HIRE}dsi_rx_ss_0/dwc_mipi_cdphy_rx_4l3t_ns -to ${DSIR_HIRE}dsi_rx_ss_0/dsi_rx_ss_register/dtb_out

3：configure_ip_block

eg：configure_ip_block -names  dsc_enc_DWC_dsc     -type {cdc asyncreset}

4：set_case_analysis 0  xxx/Q

eg：set_case_analysis 0 ${DSIR_HIRE}u_bd_dnt_data_sync/U_BD_DNT_SYNC_RSYNC/Q

5：create_static

create_static -name ${DSIR_HIRE}xxx_register/vr_mode_reg/Q