Patent ID: 7861190
Filing Date: 2010-12-28
Classification: G06F

Abstract:
1. A system of implementing a user design in a programmable logic integrated circuit comprising: a database component comprising the user design and a first path of the user design indicated as a critical path; a place and route tool component, wherein the tool considers a voltage drop characteristic of logic blocks of the programmable logic integrated circuit when initially attempting to implement the first path; and a display component, providing a graphical user interface to the place and route tool component, wherein the programmable logic integrated circuit has a plurality of regions, wherein first voltage rails in a first region have a first voltage drop range and second voltage rails in a second region have a second voltage drop range, and logic blocks in the second region having a faster timing than in the first region, and wherein the place and route tool component provides an indication on the display component when the first path can only be implemented using at least one logic block in the first region.