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:
Aug. 28, 2012
Filed:
Sep. 23, 2009
John Maddux, Folsom, CA (US);
Luke A. Johnson, Queen Creek, AZ (US);
Ronald W. Swartz, Granite Bay, CA (US);
Donald Rush, El Dorado Hills, CA (US);
Meetul Goyal, El Dorado Hills, CA (US);
Rajashri Doddamani, Folsom, CA (US);
John Maddux, Folsom, CA (US);
Luke A. Johnson, Queen Creek, AZ (US);
Ronald W. Swartz, Granite Bay, CA (US);
Donald Rush, El Dorado Hills, CA (US);
Meetul Goyal, El Dorado Hills, CA (US);
Rajashri Doddamani, Folsom, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
Methods and systems to calibrate an on-die resistor relative to an operating voltage of an on-die push-pull driver, and to calibrate the push-pull driver relative to the on-die resistor and relative to operating voltages of the push-pull driver. The calibrated on-die resistor may be used to calibrate receive terminations, a differential transmit termination, and a simulated far-end differential receive termination. The calibrated differential transmit termination and simulated far-end differential receive termination may be coupled in parallel to calibrate current drivers. Calibration of the current drivers may include calibrating voltage swing, and may include a first phase that simultaneously adjusts compensation to the current drivers, and a second phase that individually adjusts the compensation to the current drivers.