Intel Corporation

Dawson Kesling

Harry G Skinner

Maynard C Falconer

Alberto Alcocer Ochoa

Gerhard Schrom

Aaron K Martin

Jeremy J Shrall

Andrew W Martwick

Jonathan P Douglas

Mamun Ur Rashid

Alexander Lyakhov

Joe Salmon

J Keith Hodgson

Eduardo Alban

Steven J Kirch

Ravindran Mohanavelu

Adam J Norman

Antonio Zenteno Ramirez

Kevin P Slattery

Rahul D Limaye

Michael W Rogers

Jose A Sanchez Sanchez

Ewunnet Gebre-Selassie

Shah M Musa

Fugao Wang

Techniques for determining the spectral content of a data bus are described herein. An example of a device in accordance with the present techniques includes a data bus comprising one or more signal lines, a first phasor generator, and a second phasor generator. The first phasor generator obtains a first data value based on the data to be transmitted over the data bus and generates a first phasor. The second phasor generator obtains a second data value based on the data to be transmitted over the data bus and generates a second phasor. The sum of the first phasor and the second phasor indicate, at least in part, the spectral content of the data to be transmitted over the data bus.

Determining the spectral energy content of a data bus

A method for reducing noise on a power distribution network of a printed circuit board includes determining whether a given data signal may be a problematic data signal. The given data signal is issued onto a signal distribution network of the printed circuit board if the given data signal is determined to not be a problematic data signal. The given data signal is encoded into an encoded data signal if the given data signal is determined to be a problematic data signal, and the encoded data signal is issued onto the signal distribution network.

Method and apparatus for mitigating resonant effects within a power delivery network of a printed circuit board

A chip is provided to include a circuit to transmit one or more data bursts, where the circuit includes burst timing logic to insert gaps of a determined length between adjacent data bursts to reduce noise at a desired frequency, where the length of each gap is to be determined based on energy of a preceding burst and a current burst.

RFI mitigation using burst timing

Described is an apparatus for providing spread-spectrum to a clock signal. The apparatus comprises: an oscillator to generate an output clock signal, the oscillator to receive an adjustable reference signal to adjust frequency of the output clock signal; a first circuit to provide a first signal indicative of a center frequency of the output clock signal; a second circuit to generate a switching waveform to provide spread-spectrum for the output clock signal; and a third circuit, coupled to the first and second circuits, to provide the adjustable reference signal according to the first signal and the switching waveform.

Spread-spectrum apparatus for voltage regulator

Examples are disclosed for switching frequency control of an on-chip or integrated voltage regulator. In some examples, a switch frequency of an integrated voltage regulator may be monitored. A determination of whether the monitored switch frequency causes radio signal interference may cause the switch frequency to be adjusted to eliminate or reduce the radio signal interference. Other examples are described and claimed.

Dynamic switching frequency control of an on-chip or integrated voltage regulator

Briefly, in accordance with one or more embodiments, a platform may comprise a receiver to receive a signal that includes an error in the received signal due to a noise signal generated in the platform, and a processor configured to calculate a noise vector from a source of the noise signal and to send the noise vector to the receiver, The receiver may include a digital signal processor configured to estimate an error vector based at least in part on the noise vector and to subtract the estimated error vector from the received signal to cancel the noise signal from the received signal. The noise cancelled from the received signal may include platform noise generated by a bus, a memory circuit, a clock, a power supply, a circuit ground or integrated circuit substrate, or input/output circuit of the platform.

Baseband cancellation of platform radio interference

A method for managing information includes receiving bits of data, determining phasors for bits at only one frequency of a transmission spectrum, combining the phasors of bits that form a phasor having a spectral energy that lies within a predetermined range, and forming a codeword from the bits of the combined phasors.

Apparatus and method for coding data based on phasor disparity

A terminal includes control logic to control a phase-locked loop to output a spread-spectrum clocking signal. The control logic controls the generation of the spread-spectrum clocking signal by adjusting at least one parameter of the phase-locked loop. The parameter may be a charge pump setting or a loop-filter capacitance of the phase-locked loop, or their digital equivalents. Adjustment of the parameter reduces a predetermined portion of a communications spectrum. The predetermined portion may be located within a range of frequencies allocated to a specific channel, and reduction of the spectrum in this range may serve to reduce noise associated with clocking harmonics.

Apparatus and method for performing spread-spectrum clock control

In some embodiments, SSC (e.g., discrete SSC) profiles with intentional and controlled gaps may be used to mitigate interference for platform radios. Targeted frequency gaps are placed in spectrum of spread clocks and clock-derived signals where they may otherwise result in problematic RFI to a platform radio.

Platform RFI mitigation

Embodiments of the invention are generally directed to systems, methods, and apparatuses for a clocking architecture using a bidirectional clock. In an embodiment, a chip includes a bidirectional clock port capable of being statically configured to receive or to transmit a reference clock. In one embodiment, the chip includes a first port to receive data and a second port, wherein the chip repeats at least a portion of the data that it receives on the first port to a transmitter at the second port. Other embodiments are described and claimed.

Growing community of inventors

Davis, CA, United States of America

Dawson Kesling