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.

Date of Patent:
Dec. 15, 2015

Filed:

Jun. 10, 2011
Applicants:

Xiaotong Lin, Saratoga, CA (US);

Mehmet Tazebay, Irvine, CA (US);

Peiqing Wang, Laguna Beach, CA (US);

Inventors:

Xiaotong Lin, Saratoga, CA (US);

Mehmet Tazebay, Irvine, CA (US);

Peiqing Wang, Laguna Beach, CA (US);

Assignee:

Broadcom Corporation, Irvine, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L 12/46 (2006.01); H04J 3/06 (2006.01);
U.S. Cl.
CPC ...
H04L 12/4625 (2013.01); H04J 3/0641 (2013.01); H04J 3/0688 (2013.01); H04J 3/0644 (2013.01);
Abstract

An Ethernet PHY may receive an indication from a local timing source that a local clock is suitable for propagation to a link partner. In response, a timer in the Ethernet PHY may be started. In instances that the Ethernet PHY receives, during a time period subsequent to starting the timer and before the timer reaches a predetermined value, an indication that the link partner is propagating a clock that is suitable for the Ethernet PHY to synchronize to, the Ethernet PHY may be configured as timing slave. In instances that the Ethernet PHY does not receive, during the time period subsequent to starting the timer and before the timer reaches a predetermined value, an indication that the link partner is propagating a clock that is suitable for the Ethernet PHY to synchronize to, Ethernet PHY may be configured as timing master upon the timer reaching the predetermined value.


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