The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 06, 2006
Filed:
Oct. 28, 2003
Jay T. Young, Louisville, CO (US);
Sridhar Krishnamurthy, San Jose, CA (US);
Jeffrey V. Lindholm, Longmont, CO (US);
Ian L. Mcewen, Golden, CO (US);
Jay T. Young, Louisville, CO (US);
Sridhar Krishnamurthy, San Jose, CA (US);
Jeffrey V. Lindholm, Longmont, CO (US);
Ian L. McEwen, Golden, CO (US);
Xilinx, Inc., San Jose, CA (US);
Abstract
Methods of directly targeting specified routing resources in a PLD, e.g., routing resources that need to be tested. Test designs are produced that implement observable nets using the targeted routing resources. A PLD router is used to route from a target routing resource backwards through the routing fabric of the PLD to the source of an observable net. The net is identified based on the source, and loads of the net are identified as router load targets. The router is then used to route from the target routing resource forwards to one of the loads on the net. This process can be repeated for a list of target routing resources to provide a test design that tests as many of the targeted routing resources as possible. Additional test designs can be created to test remaining target routing resources. In other embodiments, the router routes first forwards, then backwards.