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. 29, 2018
Filed:
Sep. 30, 2016
Cadence Design Systems, Inc., San Jose, CA (US);
Philippe Salib, Laval, CA;
CADENCE DESIGN SYSTEMS, INC., San Jose, CA (US);
Abstract
A method, control apparatus, and system for re-establishing a common mode in a transmitter involve switching a driver circuit of the transmitter to a quick charge or quick discharge mode based on an output value of the transmitter. When the output later exceeds a programmable common mode voltage, the driver circuit is switched to a classical margining mode to bring the output back towards the targeted common mode voltage. The modes are switched by adjusting the number of activated pull-up and pull-down segments. More pull-up segments and less pull-down segments are activated in the quick charge mode than the classical margining mode. More pull-down segments and less pull-up segments are activated in the quick discharge mode than the classical margining mode.