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:
Dec. 29, 2020
Filed:
Sep. 04, 2019
Mellanox Technologies Denmark Aps., Roskilde, DK;
Thorkild Franck, Roskilde, DK;
Ulrik Wismar, Kalundborg, DK;
Ran Sela, Givat Shmuel, IL;
Chen Gaist, Tel Aviv, IL;
Afek Bernhard, Zur Hadasa, IL;
Mellanox Technologies Ltd., Yokneam, IL;
Abstract
Methods and apparatuses are provided for locking a transmitter oscillator to a reference clock signal in a frequency domain. The apparatus includes a digital phase-frequency detector. The digital phase-frequency detector includes a mod-M counter, a mod-N counter, and a count evaluation digital circuit. The mod-M counter is designed to count reference clock cycles of a reference clock signal. The mod-N counter is designed to count local clock cycles of a local clock signal. The count evaluation digital circuit is designed to compare the counted reference clock cycles and the local clock cycles with a predefined register setting to generate a control signal as a feedback signal. The control signal is transmitted to the transmitter oscillator through a frequency-locked loop circuit for adjusting the frequency of the transmitter oscillator to be consistent with the reference clock signal.