vlsi:icc:port-location

差别

这里会显示出您选择的修订版和当前版本之间的差别。

到此差别页面的链接

@@ 行 1: / 行 1: @@
+====== Set Port Location ======
+===== Using ICC set_port_location =====
+<code tcl>
+proc place_ports_1 {} {
+  set unplaced_ports [get_ports {*sms* LSI* *bist* }]
+  set y_start [expr 14.995 + 0.36*2]
+  set y $y_start
+  set dy 0.36
+  foreach_in_collection port $unplaced_ports {
+    set direction [get_attribute $port direction]
+    set_port_location -coordinate "0 $y" -layer_name M5 -layer_area "0 $y 0.07 [expr $y + 0.07]"  $port
+    set_attribute $port direction $direction
+    set y [expr $y + $dy]
+    change_selection $port
+    break
+  }
+}
+</code>
+===== Using floorplan methods =====
+If you using write_floor_plan command to write port location, you will see commands like following:
+<code tcl>
+set obj [get_terminal {"psroBaseAddress[12]"}]
+set_attribute -quiet $obj layer  M2
+set_attribute -quiet $obj owner_port  {psroBaseAddress[12]}
+set_attribute -quiet $obj bbox {{0.925 0.000} {0.995 0.070}}
+set_attribute -quiet $obj status Unplaced
+set_attribute -quiet $obj access_direction Down
+set_attribute -quiet $obj direction input
+set_attribute -quiet $obj eeq_class 0
+</code>
+Based on above command, we can place port using the similar commands.
+<code tcl>
+proc place_ports {} {
+  set unplaced_ports [get_ports {*sms* LSI* *bist* }]
+  set y_start [expr 14.995 + 0.36*2]
+  set y $y_start
+  set dy 0.36
+  foreach_in_collection port $unplaced_ports {
+    set icccmd ""
+    set terminal [ get_terminals -of $port ]
+    set direction [get_attribute $port direction]
+    set icccmd "set obj \[get_terminal \{\"[get_attribute $terminal name]\"\}\] \n"
+    set icccmd "$icccmd set_attribute -quiet \$obj layer  M5 \n"
+    set icccmd "$icccmd set_attribute -quiet \$obj owner_port \{[get_attribute $port name]\} \n"
+    set icccmd "$icccmd set_attribute -quiet \$obj bbox \{\{0 $y\} \{0.07 [expr $y+0.07]\}\} \n"
+    set icccmd "$icccmd set_attribute -quiet \$obj status Unplaced \n"
+    set icccmd "$icccmd set_attribute -quiet \$obj access_direction Left \n"
+    set icccmd "$icccmd set_attribute -quiet \$obj direction $direction \n"
+    set icccmd "$icccmd set_attribute -quiet \$obj eeq_class 0 \n"
+    #echo $icccmd
+    eval $icccmd
+    set y [expr $y + $dy]
+  }
+}
+</code>
+===== Place Ports in Equal distance without change order =====
+<code tcl>
+set ports [ get_ports -filter "layer==M3 || layer==M5 || layer==M7 && bbox_lly < 10"  ]
+set sports [ sort_collection $ports bbox_llx ]
+set location_list [list]
+array set location_array {}
+set prellx 0
+foreach_in_collection p $sports {
+  set llx [ get_attribute $p bbox_llx ]
+  if { $prellx == $llx } {
+  } else {
+    set location_array($llx)  0
+    lappend location_list $llx
+    echo $llx
+  }
+  set prellx $llx
+}
+#set location_list [ lsort $location_list ]
+set index 0
+foreach llx $location_list {
+  if { $index == 0} {
+    set new_location $llx
+  } else {
+    set new_location  [expr $new_location + 0.27]
+  }
+  set index [ expr $index + 1]
+  #echo $index $llx $new_location
+  set location_array($llx) $new_location
+}
+foreach_in_collection p $sports {
+  set llx [get_attribute $p bbox_llx]
+  set new_llx $location_array($llx)
+  set dx [expr $new_llx -$llx]
+  move_objects -delta "$dx 0" $p
+  #echo $llx $new_llx $dx
+}
+</code>

vlsi/icc/port-location.txt · 最后更改: 2011/11/30 06:44 (外部编辑)