Monotonic parallel and orthogonal routing for single-layer ball grid array packages

— In this paper, we give the necessary and sufficient condition that all nets can be connected by monotonic routes when a net consists of a finger and a ball and fingers are on the two parallel boundaries of the Ball Grid Array package, and propose a monotonic routing method based on this condition. Moreover, we give a necessary condition and a sufficient condition when fingers are on the two orthogonal boundaries, and propose a monotonic routing method based on the necessary condition.

• Type: Conference
• Year: 2006
• Where: ASPDAC
• Authors: Yoichi Tomioka, Atsushi Takahashi
• Keywords: ASPDAC 2006, Monotonic Routing Method, Necessary Condition, Sufficient Condition