Patent 7702840 was granted and assigned to Xilinx on April, 2010 by the United States Patent and Trademark Office.
Lane configuration of an interface device of an integrated circuit is described. A core is used to tile a portion of an integrated circuit with a first version of the core and a second version of the core. The core is an application specific circuit version of an interface device. The first version and the second version in combination have a sharable interface. Each of the first version and the second version has N lanes. The first version is a primary version and the second version is a secondary version responsive to a shared interface mode. The N lanes of the second version are combined with the N lanes of the first version via the sharable interface for providing 2-by-N lanes of input/output to the first version.