Agere Systems Inc.

Lucent Technologies Inc.

Lsi Corporation

Avago Technologies General IP (singapore) Pte. Ltd.

Michael S Buonpane

Scott A Segan

Richard Muscavage

James D Chlipala

Zhongke Wang

Ravi Kumar Kolagotla

Jiancheng Mo

Eric P Wilcox

An adaptive voltage scaling system includes first and second devices. Each of the first and second devices includes at least one master serial interface port and at least one slave serial interface port. The first device is operatively coupled to a voltage regulator, and the slave serial interface port associated with the second device is operatively coupled to the master serial interface port associated with the first device. The first device controls the voltage regulator based on information obtained from the first and second devices using the master serial interface port associated with the first device and the slave serial interface port associated with the second device. The first and second devices receive voltage from the voltage regulator. A corresponding method and computer-readable medium are also disclosed.

Adaptive voltage scaling using a serial interface

A secure memory system and a method of maintaining the security of memory contents. One embodiment of the system includes: (1) a security control module configured to transmit a system memory secure mode signal and processor secure mode signal to place the system in a secure mode, (2) a secure memory bridge coupled to the security control and system memory and configured to encrypt and decrypt data associated with the system memory based on a state of the system memory secure mode signal and (3) a boot processor coupled to the security control module and the secure memory bridge and configured to transmit requests to the secure memory bridge in the secure mode and an unsecure mode.

System and method for maintaining the security of memory contents and computer architecture employing the same

Techniques for enhancing the performance of an IC are provided. A method of enhancing IC performance includes the steps of: associating at least one performance result of at least one performance monitor, formed on the IC, with deterministic combinations of IC performance and a processing parameter, a supply voltage, and/or a temperature of the IC; determining an IC processing characterization of the IC as a function of the performance result for at least one prescribed supply voltage and temperature of the IC, the IC processing characterization being indicative of a type of processing received by the IC during fabrication of the IC; and controlling a voltage supplied to at least a portion of the IC, the voltage being controlled as a function of the IC processing characterization and/or the temperature of the IC so as to satisfy at least one prescribed performance parameter of the IC.

Integrated circuit performance enhancement using on-chip adaptive voltage scaling

Generally, methods and apparatus are provided for deriving an integrated circuit (IC) clock signal with a frequency that is offset from the IC system clock. An offset clock having a frequency that is offset from a system clock is generated by configuring a ring oscillator in a first mode to generate the system clock having a desired frequency; and adjusting the configuration of the ring oscillator in a second mode to generate the offset clock having the frequency that is offset from the system clock. The configuration of the ring oscillator is adjusted in the second mode by adjusting (i) a power supply value applied to the ring oscillator in the second mode relative to a power supply value applied in the first mode; or (ii) a number of delay line elements that are active in the ring oscillator loop.

Method and apparatus for deriving an integrated circuit (IC) clock with a frequency offset from an IC system clock

There is disclosed, a high speed comparator with bit-wise masking takes advantage of early availability of the reference word and mask word to generate conditional select signals, thereby minimizing the time required to generate a comparator output once the input word to be compared is available.

Growing community of inventors

Easton, PA, United States of America

Michael S Buonpane