Article ID: 000082091 Content Type: Troubleshooting Last Reviewed: 03/29/2018

Why are timing failures reported from *wys~ch3_pcs_chnl_hip_clk_out[0].reg for Intel® Arria® 10 PCIe* Gen3 Hard IP?

Environment

  • Intel® Arria® 10 FPGAs and SoC FPGAs
  • Intel® Quartus® Prime Pro Edition
  • Intel® Arria® 10 Cyclone® 10 Hard IP for PCI Express
  • BUILT IN - ARTICLE INTRO SECOND COMPONENT
    Description

    Due to a problem with the PCIe* Hard IP sdc file, when you use Intel® Arria® 10 PCIe* Hard IP Gen3, there will be following timing paths reported:

    from *altpcie_a10_hip_pipen1b:altpcie_a10_hip_pipen1b|wys~ch3_pcs_chnl_hip_clk_out[0].reg to other elements inside Hard IP.

    These paths can be safely ignored. 

    Resolution

    To work around this problem, these paths can be ignored using the following set false path sdc assignments:

    set_false_path -from {*|altpcie_a10_hip_pipen1b:altpcie_a10_hip_pipen1b|wys~ch3_pcs_chnl_hip_clk_out[0].reg} -to {*:phy_g3x8|twentynm_xcvr_native:g_xcvr_native_insts[*].twentynm_xcvr_native_inst|twentynm_xcvr_native_rev_20nm5:twentynm_xcvr_native_inst|twentynm_pcs_rev_20nm5:inst_twentynm_pcs|gen_twentynm_hssi_common_pld_pcs_interface.inst_twentynm_hssi_common_pld_pcs_interface~pld_rate_reg.reg}
    set_false_path -from {*|altpcie_a10_hip_pipen1b:altpcie_a10_hip_pipen1b|wys~ch3_pcs_chnl_hip_clk_out[0].reg} -to {*:phy_g3x8|twentynm_xcvr_native:g_xcvr_native_insts[*].twentynm_xcvr_native_inst|twentynm_xcvr_native_rev_20nm5:twentynm_xcvr_native_inst|twentynm_pcs_rev_20nm5:inst_twentynm_pcs|gen_twentynm_hssi_8g_tx_pcs.inst_twentynm_hssi_8g_tx_pcs~tx_clk2_by2_1.reg}
    set_false_path -from {*|altpcie_a10_hip_pipen1b:altpcie_a10_hip_pipen1b|wys~ch3_pcs_chnl_hip_clk_out[0].reg} -to {*:phy_g3x8|twentynm_xcvr_native:g_xcvr_native_insts[*].twentynm_xcvr_native_inst|twentynm_xcvr_native_rev_20nm5:twentynm_xcvr_native_inst|twentynm_pcs_rev_20nm5:inst_twentynm_pcs|gen_twentynm_hssi_8g_tx_pcs.inst_twentynm_hssi_8g_tx_pcs~tx_clk2_by2_1.reg}
    set_false_path -from {*|altpcie_a10_hip_pipen1b:altpcie_a10_hip_pipen1b|wys~ch3_pcs_chnl_hip_clk_out[0].reg} -to {*:phy_g3x8|twentynm_xcvr_native:g_xcvr_native_insts[*].twentynm_xcvr_native_inst|twentynm_xcvr_native_rev_20nm5:twentynm_xcvr_native_inst|twentynm_pcs_rev_20nm5:inst_twentynm_pcs|gen_twentynm_hssi_8g_tx_pcs.inst_twentynm_hssi_8g_tx_pcs~tx_clk2_by2_1.reg}

    This problem will be resolved in a future release of the Intel® Quartus® Prime Software.

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