Differences

This shows you the differences between two versions of the page.

--- asic:pnr:start [2023/11/23 17:10] – [Placement and Routing] rajit
+++ asic:pnr:start [2023/11/23 17:13] (current) – rajit
@@ Line 15: / Line 15: @@
 interact> phydb:create 1.8 1  "output.lef"
 interact>
-<code>
+</code>
+Running this with the correct ''.rect'' files will ensure that the generated LEF will include correct pin locations, routing obstacles, etc.
 ===== Placement  =====
@@ Line 41: / Line 43: @@
 </code>
-This flow corresponds to a gridded placement flow. For gridded cells, the power buses are run after placement. To run this special power bus router, use the following commands:
+This flow corresponds to a gridded placement flow.
+===== Power routing =====
+For gridded cells, the power buses are run after placement. To run this special power bus router, use the following commands:
 <code>
 interact> pwroute:init 3
@@ Line 51: / Line 57: @@
 </code>
 Here we turn off reinforcements, as the technology does not have many metal layers. For a more modern process, the power router is capable of adding horizontal and vertical reinforcements of the power grid as well.
+===== Global routing =====
 Finally, we can run the global router called ''sproute'' as follows: