Patent ID: 7246285
Filing Date: 2007-07-17
Classification: G01R

Abstract:
1. A method of locating a fault on a failed line segment of a switch matrix comprising: generating a first route between an input of the switch matrix and an output of the switch matrix through a first programmable interconnect point on the line segment and through a first adjacent programmable interconnect point; configuring the first route in the switch matrix; applying a first test vector at the input; measuring first test data at the output; generating a second route between the input and the output through the first programmable interconnect point on the line segment and through a second adjacent programmable interconnect point; configuring the second route in the switch matrix; applying a second test vector at the input; measuring second test data at the output; and comparing the first test data and the second test data against a layout schematic of a programmable logic device so as to locate the fault on the failed line segment.