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:
Oct. 01, 2013
Filed:
Dec. 06, 2011
Vladimir Sindalovsky, Perkasie, PA (US);
Mohammad S. Mobin, Orefield, PA (US);
Lane A. Smith, Easton, PA (US);
Amaresh V. Malipatil, San Jose, CA (US);
Pervez M. Aziz, Dallas, TX (US);
Vladimir Sindalovsky, Perkasie, PA (US);
Mohammad S. Mobin, Orefield, PA (US);
Lane A. Smith, Easton, PA (US);
Amaresh V. Malipatil, San Jose, CA (US);
Pervez M. Aziz, Dallas, TX (US);
LSI Corporation, Milpitas, CA (US);
Abstract
In described embodiments, a Serializer-Deserializer (SerDes) receiver includes a pattern detector that allows for detection of insufficiently randomized pattern periods and low activity periods. A freeze of equalization adaptation during these periods might occur by embedding disqualifying patterns into adaptation data. Some embodiments also allow for detection of long intervals of freeze, and so delay a freeze de-assertion in order for a clock and data recovery (CDR) circuit of the receiver to regain lock to the serial data. Embedding freeze information in the receive data allows for precise synchronization of receive data and freeze.