| ################################################################################## |
| # POST-PRE_CTS PLUG-IN |
| ################################################################################## |
| # |
| # This plug-in is called after optDesign -preCTS from the run_prects.tcl flow |
| # script. The user can use this plug-in for: |
| # |
| # -------------------------------------------------------------------------------- |
| # - Secondary power pin routing for low power cells |
| # - State retention flops |
| # - Always-on-buffers |
| # - Level-shifters |
| # - Check the connectivity and geometry on these nets |
| # -------------------------------------------------------------------------------- |
| # Below are some example commands ... |
| #################################################################################### |
| |
| #################################################################################### |
| # Secondary power routing for SRPG/AON/LVL cells using nanoroute ... |
| # It requires vars(secondary_pg,cell_pin_pairs) to be defined in the lp_config.tcl |
| # -------------------------------------------------------------------------------- |
| # NOTE: In the early stage of the flow (before CTS) if user wants to estimate the |
| # routing resource impact due to secondary pg pin routing, he can do secondary pg pin |
| # connection before CTS OR if user enables "vars(route_secondary_pg_nets)" as true in |
| # OVERLAY/lp_config.tcl then same would be done before the routing stage also. |
| # -------------------------------------------------------------------------------- |
| ::FF_EDI::route_secondary_pg_nets |
| |
| #################################################################################### |
| ## Check for Geometry and connectivity violations on power nets |
| #################################################################################### |
| clearDrc |
| |
| verifyConnectivity \ |
| -type special \ |
| -noAntenna \ |
| -nets { VSSsoc VDDdvfs VDDw VDDsmc VDDuart VDDwake VDDpll } \ |
| -report $vars(rpt_dir)/$vars(design).conn.rpt |
| |
| verifyGeometry \ |
| -allowPadFillerCellsOverlap \ |
| -allowRoutingBlkgPinOverlap \ |
| -allowRoutingCellBlkgOverlap \ |
| -error 1000 \ |
| -report $vars(rpt_dir)/$vars(design).geom.rpt |
| |
| clearDrc |
