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. 09, 2018
Filed:
Aug. 30, 2017
Keyssa Systems, Inc., Campbell, CA (US);
Jerome Jean Ribo, San Jose, CA (US);
Bruno Tourette, Cupertino, CA (US);
Roger Isaac, San Jose, CA (US);
Keyssa Systems, Inc., Campbell, CA (US);
Abstract
A device comprises a clock data recovery (CDR) circuit. The CDR circuit has an input node to receive an input data signal, an output node, a data recovery circuit, and a self-test circuit. The CDR circuit supports a first mode of operation and a second mode of operation. In the first mode, the CDR circuit receives the input data signal at the input node and provides the input data signal to an input of the data recovery circuit, the data recovery circuit recovers first data from the input data signal, and the CDR circuit provides the first data for output at the output node. In the second mode, the self-test circuit generates a test data pattern which is provided to the output node and looped back to the input of the data recovery circuit, the data recovery circuit recovers second data from the test data pattern, and the self-test circuit checks the second data for errors.