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:
Nov. 16, 2010
Filed:
Oct. 31, 2009
Pankaj Kumar, Karnataka, IN;
Pramod Elamannu Parameswaran, Karnataka, IN;
Makeshwar Kothandaraman, Whitehall, PA (US);
Vani Deshpande, Karnataka, IN;
Pankaj Kumar, Karnataka, IN;
Pramod Elamannu Parameswaran, Karnataka, IN;
Makeshwar Kothandaraman, Whitehall, PA (US);
Vani Deshpande, Karnataka, IN;
LSI Corporation, Milpitas, CA (US);
Abstract
A method includes controllably utilizing a control signal generated by an Input/Output (IO) core to isolate a current path from an external voltage supplied through an IO pad to a supply voltage by transmitting a same voltage at an input terminal of a transistor, configured to be part of a number of cascaded transistors of an IO driver of an interface circuit, to an output terminal thereof during a failsafe mode of operation and a tolerant mode of operation. The method also includes feeding back an appropriate voltage to a floating node created by the isolation of the current path, and controlling a voltage across each transistor of the number of cascaded transistors to be within an upper tolerable limit thereof through an application of a gate voltage to each transistor derived from the supply voltage or the external voltage supplied through the IO pad.