Cirrus Logic Inc.

Crystal Semiconductor Corporation

Other

Dell Products Inc.

Ronald D Malcolm

Jeff Klaas

Phillip Matthews

Mark Gentry

Juergen M Lutz

Nicholas Diciurcio Grobelny

Sean P O'Neal

Marcin M Nowak

Joshua Alperin

Akash Malhotra

Juergen Lutz

A method and information handling system including a first universal serial bus (USB) type C port for transceiving SMBus data multiplexed over unused USB-2 pins from a host information handling system, a first multiplexer for demultiplexing the SMBus as a designated data bus to a second multiplexer to create a designated bus for management controller transport protocol data, the second multiplexer re-multiplexing the SMBus designated bus to a second USB type C port for connection with an out-of-band management hardware system network interface card of a device connected to the second USB type C port for communication of management controller transport protocol data with the information handling system host and bypassing a docking station high capacity connector multiplex controller, and an embedded controller for activating the first multiplexer and the second multiplexer upon detecting the connection with the out-of-band management hardware system network interface card via the second USB type C port and establishing the designated data bus for management controller transport protocol data bypass connection.

System and method for adding active out-of-band management capability as a user-selectable module

A single chip audio systemincludes a bus interfacedigital to analog convertersan analog mixerand analog spatial enhancement circuitryDigital to analog convertersconvert digital audio data received through bus interfaceinto analog signals. Analog mixermixes signals received from digital to analog converterswith an analog signal received from an external source. Analog spatial enhancement circuitryenhances first and second mixed analog signals output from analog mixer

Single-chip audio circuits, methods, and systems using the same

Amplitude control circuitry includes a first register for storing received amplitude control data and a second register for storing amplitude control data transfered from first register . Output circuitry controls the amplitude of a received signal in response to amplitude data transferred from second register. A sensor determines when data stored in first register and second register does not match and enables a comparator when data in first register and, second register does not match. Comparator compares a signal output from output circuitry with a reference signal and generates a signal for enabling the transfer of data from first register to second register when the signal output from output circuitry falls within a window defined by the reference voltage.

Signal amplitude control circuitry and methods

A single chip audio system includes a bus interface , digital to analog converters , an analog mixer , and analog spatial enhancement circuitry . Digital to analog converters convert digital audio data received through bus interface into analog signals. Analog mixer mixes signals received from digital to analog converters with an analog signal received from an external source. Analog spatial enhancement circuitry enhances first and second mixed analog signals output from analog mixer

Single-chip audio circuitry, method, and systems using the same

A periodic multi-bit digital signal is synthesized having a frequency that is specified by the frequency of a periodic reference signal that is asynchronous with respect to a sampling clock of the periodic digital signal. In a digital video system, for example, a digital color subcarrier is synthesized and synchronized to a reference frequency of a crystal oscillator that is asynchronous with respect to a digital system clock for the digital video system. The periodic digital signal is generated by an adjustable digital oscillator clocked by the sampling clock. The frequency or phase of the periodic digital signal is compared to the frequency or phase of the periodic reference signal to produce an adjustment value for adjusting the periodic digital signal to synchronize the periodic digital signal with the periodic reference signal. The digital oscillator, for example, generates the periodic digital signal at the sampling rate by periodically incrementing an accumulator with the adjustment value. The frequency or phase of the periodic digital signal is compared to the frequency or phase of the periodic reference signal, for example, by an up/down counter that is incremented or decremented each cycle of the reference signal and is decremented or incremented each cycle of the digital carrier signal to compute the adjustment value.

Phase comparison and phase adjustment for synchronization to a reference signal that is asynchronous with respect to a digital sampling clock

An audio system,disposed on a single chip includes an output mixer,having inputs for receiving first digital audio data of a first bit width from a first digital-to-analog converter,digital audio data of a second bit width from a second digital-to-analog converter,and analog data from an external port. An output port drives an analog signal output from the output mixer. An input mixer,has inputs for receiving analog data from a plurality of sources and analog-to-digital converters,to convert an analog output from the input mixer into digital data. An input path transmits the digital data output from the analog to digital convertors,to an external digital bus.

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Austin, TX, United States of America

Ronald D Malcolm