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. 24, 2016
Filed:
Jan. 23, 2015
Freescale Semiconductor, Inc., Austin, TX (US);
Khurram Waheed, Austin, TX (US);
Chris N. Stoll, Dripping Springs, TX (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
The present disclosure provides for a phase-locked loop (PLL) that includes a high-port calibration control module configured to calibrate an input modulation value of a voltage-controlled oscillator (VCO) to a first modulation value that results in an output signal of the VCO having a positive frequency change from an initial output frequency, and capture a positive frequency value of the output signal after a first accumulation time period. The high-port calibration control module is also configured to calibrate the input modulation value of the VCO to a second modulation value that results in the output signal having a negative frequency change from the initial output frequency, capture a negative frequency value of the output signal after a second accumulation time period, and calculate a calibration scale factor based on a difference between the positive and negative frequency values.