Routability driven modification method of monotonic via assignment for 2-layer Ball Grid Array packages

Ball Grid Array packages in which I/O pins are arranged in a grid array pattern realize a number of connections between chips and a printed circuit board, but it takes much time in manual routing. We propose a fast routing method for 2-layer Ball Grid Array packages to support designers. Our method distributes wires evenly on top layer and increases completion ratio of nets by improving via assignment iteratively.

• Type: Conference
• Year: 2008
• Where: ASPDAC
• Authors: Yoichi Tomioka, Atsushi Takahashi
• Keywords: ASPDAC 2008, Ball Grid Array, Grid Array, Grid Array Packages, Hardware