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:
May. 15, 2012
Filed:
Feb. 08, 2011
William Lo, Cupertino, CA (US);
Yiqing Guo, Cupertino, CA (US);
Tak Tsui, Sunnyvale, CA (US);
Tsin-ho Leung, San Jose, CA (US);
Runsheng He, Sunnyvale, CA (US);
Eric Janofsky, Sunnyvale, CA (US);
William Lo, Cupertino, CA (US);
Yiqing Guo, Cupertino, CA (US);
Tak Tsui, Sunnyvale, CA (US);
Tsin-Ho Leung, San Jose, CA (US);
Runsheng He, Sunnyvale, CA (US);
Eric Janofsky, Sunnyvale, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
A network device including a physical layer (PHY) device and an autonegotiation module. The PHY device is configured to interface with N cable pairs, where N is greater than 1. The PHY device includes a cable test module configured to diagnose a short circuit in one of the N cable pairs. The autonegotiation module is configured to i) selectively perform autonegotiation to establish a link with a link partner at one of a first link speed and a second link speed that is lower than the first link speed, and ii) select between the first link speed and the second link speed in response to the cable test module diagnosing the short circuit.