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:
Jul. 05, 2005
Filed:
Apr. 25, 2001
Syuji Matsuo, Kanagawa, JP;
Kiyoshi Tanaka, Kanagawa, JP;
Syuji Matsuo, Kanagawa, JP;
Kiyoshi Tanaka, Kanagawa, JP;
NEC Electronics Corporation, Kawasaki, JP;
Abstract
The invention provides a communication control device that includes a self-diagnostic test circuit capable of executing an operation test. The communication control circuit includes a PHY circuit on an LSI with little trouble, and at a operating speed that is equivalent to actual operation. The self-diagnostic test circuit includes: test data creation circuit for creating test data; expected value data creation circuit for creating expected values of the test data after processing; an arbitration signal switching circuit that switches arbitration signals such that test data supplied from the output driver can be received by a receiver of the same twisted-pair drive block as the output driver; and a comparison circuit that compares test data supplied from an output driver and received by a receiver of the same twisted-pair drive block as the output driver with the expected value data and creates match flags.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile