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您的足迹:
vlsi:icc:io-blockage
====== Add Placement & Route Blockage to IO Cells ====== ===== Scripts ===== <code tcl> ### NOTE : WARNING ### ### add_io_cover takes two arguments. The first is the hard blockage distance ### around the io. The second is the amount the PG route guide is INSET from ### that blockage -- a number picked to be slightly larger than half the standard ### cell PG rail width. The reason for the inset is to prevent a situation where ### placement rows wind up without a PG rail. ### d = blockage border [one row default], e is half M1 pwr rail width + margin proc add_io_cover { d e } { set x 0 foreach_in_collection c [get_cells -hier -all -filter "is_io==true"] { set coord [get_attribute $c bbox] set low_x [expr [lindex [lindex $coord 0] 0] - $d] set low_y [expr [lindex [lindex $coord 0] 1] - $d] set high_x [expr [lindex [lindex $coord 1] 0] + $d] set high_y [expr [lindex [lindex $coord 1] 1] + $d] create_placement_blockage -bbox "$low_x $low_y $high_x $high_y" -type hard -name IoBlockH_$x set newCord [list [list [expr $low_x + $e ] [expr $low_y + $e ]] [list [expr $high_x - $e ] [expr $high_y - $e ]] ] create_route_guide -name IoBlockR_$x -no_preroute_layers {M1 M2 M3 M4 M5 M6 M7 M8} -coordinate $newCord -no_snap incr x } } add_io_cover 1.8 0.14 </code>
vlsi/icc/io-blockage.txt
· 最后更改: 2011/04/20 06:20 (外部编辑)
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