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:
Feb. 10, 2004
Filed:
Dec. 21, 2001
Applicant:
Inventors:
Chung-Hsiao R. Wu, Sunnyvale, CA (US);
Jyh-Ming Jong, Saratoga, CA (US);
Assignee:
Sun Microsystems, Inc., Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 1/90185 ;
U.S. Cl.
CPC ...
H03K 1/90185 ;
Abstract
A bi-directional output buffer includes active termination and separate driving and receiving impedances. The buffer has at least a driving mode and a receiving mode. In driving mode, the output impedance of the buffer is calibrated to a specified strength. In receiving mode, the buffer is calibrated to another specified impedance as an active termination. In addition, the buffer may be configured such that resistive components are shared in driving and receiving modes.