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. 30, 2004
Filed:
Mar. 19, 2002
Applicant:
Inventor:
Kenelm G. Murray, Sunnyvale, CA (US);
Assignee:
Cypress Semiconductor Corp., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/750 ;
U.S. Cl.
CPC ...
G06F 1/750 ;
Abstract
The present invention provides a programmable on-chip resistance. An apparatus of the present invention may utilize an analog scheme and adjusts the termination resistance in real-time. One way of implementing the invention is the use of a single transistor with analog control that may vary the resistance for differential input ports. This may provide a reduction in parasitic capacitance as viewed by a high-speed driver while reducing the requirement of over-driving the gate to reduce the impedance of the transistor.