Christopher Eric Tressler, 5610251 Darden Hill Rd, Driftwood, TX 78619

6642768, Nov 4, 2003

Apr 4, 2001

09/826465

John David Schell - Round Rock TX
Adam Thomas Snider - Austin TX
Christopher Eric Tressler - Austin TX

Advanced Micro Devices, Inc. - Sunnyvale CA

H03L 500

327308, 327 78

A voltage-dependent impedance selector compensates for non-linearities that arise when the operating voltage of an electronic circuit changes. The voltage-dependent impedance selector includes a selection stage that selects a impedance based on the operating voltage of the electronic circuit. The selected impedance is connected to an output stage having a resistive value so that the selected impedance and the output stage form a voltage divider. The voltage-dependent impedance selector may, in some embodiments, be used in reference voltage generation or in impedance matching.

6721150, Apr 13, 2004

Dec 12, 2000

09/736846

Barry Kent Kates - Austin TX
Christopher Eric Tressler - Austin TX

Advanced Micro Devices, Inc. - Sunnyvale CA

H02H 700

361 18

A clamping circuit and method for use in a computer system are provided. In the computer system, a voltage regulator supplies a voltage rail to various components in the system. This voltage rail may be susceptible to voltage spikes or other over-voltage conditions, such as when the voltage rail provides the input voltage to a switching regulator. The clamping circuit comprises a detecting stage and a clamping stage. The detecting stage detects when the voltage rail increases beyond a first voltage level. If this increase is detected, the detecting stage activates the clamping stage, which begins reducing the voltage rail. Once the voltage rail decreases beneath the first voltage level, the detecting stage stops activating the clamping stage. In this way, the clamping circuit protects the computer system from voltage spikes on the voltage rail.

2008011, May 15, 2008

Nov 9, 2006

11/595637

Ravi B. Bingi - Austin TX, US
Ranger H. Lam - Austin TX, US
Thomas Madaelil - Austin TX, US
Lloyd W. Gauthier - Austin TX, US
Brian E. Longhenry - Austin TX, US
Kristy M. Cates - Austin TX, US
Christopher E. Tressler - Austin TX, US

G06F 13/00

710300

A method for providing multiple configurations for a computer system. The method provides interconnection of processor boards in a first configuration and a second configuration. In the first configuration, a first plurality of processor boards are interconnected through a first backplane. In a second configuration, a second plurality of processor boards are interconnected through a second backplane. The first and second pluralities of processor boards are interchangeable with each other.

6523129, Feb 18, 2003

Dec 16, 1997

08/991107

Christopher E. Tressler - Austin TX
Andrew W. Steinbach - Austin TX

Advanced Micro Devices, Inc. - Austin TX

G06F 126

713340, 307 30, 327 13

An improved method of preventing computer malfunction during a change of power consumption states is disclosed. The computer operates a microprocessor at a specified voltage during a normal operation. To offset the normal decrease in voltage due to an instantaneous increase in power requirements during a change of power consumption states, the specified voltage is increased prior to entering a higher power consumption state such that the voltage level remains within minimum operating limits.

2015037, Dec 31, 2015

Jun 25, 2014

14/314790

- Sunnyvale CA, US
Robert A. Hershberger - Driftwood TX, US
Sriram Sambamurthy - Austin TX, US
Samuel D. Naffziger - Fort Collins CO, US
Christopher E. Tressler - Driftwood TX, US
Joseph P. Shannon - Austin TX, US
Krishna Sai Bernucho - Austin TX, US
Ashwin Chincholi - Austin TX, US
Michael J. Austin - Austin TX, US
Steven F. Liepe - Fort Collins CO, US
Umair B. Cheema - Richmond Hill, CA

G06F 1/28
G06F 1/26

A processing system includes one or more power supply monitors (PSMs) to measure one or more first voltages corresponding to one or more locations in the processing system. The measurements are performed concurrently with the processing system executing one or more code loops. The processing system also includes calibration logic to modify a second voltage provided to the processing system based on a comparison of a reference voltage and the one or more first voltages. The reference voltage is determined based on previous execution of the one or more code loops by the processing system.