AR# 71055

LogiCORE UHD-SDI GT v1.0 - Why do I get Critical Warnings and Errors mentioning a cmp_gt_sts pin when trying to implement the UHD-SDI GT?

Description

When using the UHD-SDI GT wrapper it is possible to get Errors and Critical warnings due to the cmp_gt_sts pin. 

Critical Warning Example:

[Synth 8-3352] multi-driven net cmp_gt_sts[30] with 1st driver pin 'intf_1_ctrl_sb_rx_tdata[5]'

[Synth 8-3352] multi-driven net cmp_gt_sts[30] with 2nd driver pin 'intf_1_ctrl_sb_rx_tdata[2]'

Error example:

[DRC MDRV-1] Multiple Driver Nets: Net design_1_i/uhdsdi_gt_wrapper/uhdsdi_gt/uhdsdi_gt_0/inst/GT_WRAPPER_INST/gen_multi_gt_channel[0].gt_channel_gthe4_inst.uhdsdi_link/inst/gen_gtwizard_gthe4_top.uhdsdi_gtwiz_gtwizard_gthe4_inst/gen_gtwizard_gthe4.gen_channel_container[2].gen_enabled_channel.gthe4_channel_wrapper_inst/channel_inst/drpadi_out_reg[15][15] has multiple drivers:
design_1_i/uhdsdi_gt_wrapper/uhdsdi_gt/uhdsdi_gt_0/inst/GT_WRAPPER_INST/gen_multi_gt_channel[1].gt_channel_gthe4_inst.uhdsdi_link/inst/gen_gtwizard_gthe4_top.uhdsdi_gtwiz_gtwizard_gthe4_inst/gen_gtwizard_gthe4.gen_channel_container[2].gen_enabled_channel.gthe4_channel_wrapper_inst/channel_inst/gthe4_channel_gen.gen_gthe4_channel_inst[0].GTHE4_CHANNEL_PRIM_INST/DRPDO[0], and design_1_i/uhdsdi_gt_wrapper/uhdsdi_gt/uhdsdi_gt_0/inst/GT_WRAPPER_INST/gen_multi_gt_channel[0].gt_channel_gthe4_inst.uhdsdi_link/inst/gen_gtwizard_gthe4_top.uhdsdi_gtwiz_gtwizard_gthe4_inst/gen_gtwizard_gthe4.gen_channel_container[2].gen_enabled_channel.gthe4_channel_wrapper_inst/channel_inst/gthe4_channel_gen.gen_gthe4_channel_inst[0].GTHE4_CHANNEL_PRIM_INST/DRPDO[15].

Solution

To resolve these Critical Warnings and Errors, make the cmp_gt_sts pin external to IP Integrator.

Once the pin is external to IP Integrator, it can be left floating (unconnected in the wrapper).


 

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AR# 71055
Date 05/09/2018
Status Active
Type General Article
Tools
IP