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:
Jul. 27, 2004
Filed:
Oct. 19, 2000
Hoa Cong Nguyen, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method, system, and computer program for updating a reference voltage for a interface chip to a component of a data processing system is provided. In one embodiment, a service processor reads the voltage requirements from a vital product data (VPD) module for each component within the data processing system and determines whether the voltage requirement for any component differs from a default voltage value. If any component has a voltage requirement that differs from the default value, then the service processor sends a signal to a JTAG controller or voltage selector within the interface chip corresponding to the affected component changing a register bit that results in the Input/Output drivers group corresponding to the affected component using a reference voltage that matched the requirements of the component rather than the default reference voltage.