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:
Jan. 25, 2005
Filed:
Mar. 21, 2003
Hans-heinrich Viehmann, S. Burlington, VT (US);
Stefan Lammers, South Burlington, VT (US);
Hans-Heinrich Viehmann, S. Burlington, VT (US);
Stefan Lammers, South Burlington, VT (US);
Infineon Technologies AG, Munich, DE;
Abstract
An apparatus for use as both an off chip driver (OCD) and an on die termination (ODT) circuits. A preferred embodiment comprises a control circuit (for example, control circuit) coupled to a dual function OCD/ODT circuit (for example, OCD/ODT circuit) with an enable line coupled to the control circuit. The control circuit may be used to selectively choose OCD and ODT functionality based on a value on the enable line. With the control circuit choosing OCD, the dual function OCD/ODT circuit functions as an OCD circuit, placing signals provided through the control circuit onto a transmission line. With the control circuit choosing ODT, the dual function OCD/ODT circuit becomes terminating resistors for incoming signals on a transmission line. The use of a single circuit for both OCD and ODT functions can save both integrated circuit real-estate and implementation costs due to a reduction in use of circuit elements.