global routing and detail routing

All question related to floorplanning, power planning, placement, clock tree synthesis (CTS), routing, DRC cleaning, LVS, power, IR drop, Electromigration (EM), ESD, package.
Post Reply
Posts: 25
Joined: Sun Apr 13, 2014 1:39 pm
Location: Bangalore, India

global routing and detail routing

Post by Vijay » Sat May 10, 2014 1:31 pm

Routing is done in two steps, global routing & detail routing. What is the difference between global routing & detail routing?

User avatar
Posts: 59
Joined: Tue Apr 08, 2014 11:29 am
Location: Bangalore, INDIA

Re: global routing and detail routing

Post by Narveer » Sat May 10, 2014 6:57 pm

The routing problem is typically solved using a two step approach:
Global Routing:
• Define the routing regions.
• Generate a tentative route for each net.
• Each net is assigned to a set of routing regions.
• Does not specify the actual layout of wires.

Detailed Routing:
• For each routing region, each net passing through that region is assigned particular routing tracks.
• Actual layout of wires gets fixed.
• Associated subproblems: channel routing and switchbox routing. ... outing.pdf ... outing.pdf

Post Reply