Nxp Usa, Inc.

Tristan Bosvieux

Guillaume Mouret

John M Pigott

Laurent Bordes

Yann Cargouet

Jeremy Guillermand

Julien Burro

John Pigott

A calibration apparatus for a communication system. The calibration apparatus is configured to: a) set a variable termination-resistance at a receiver to a predetermined value; b) cause a transmitter to send a calibration pattern to the receiver by: setting the differential voltage on the line to a non-zero value during a non-zero-phase; and setting the differential voltage on the line to zero during a subsequent zero-phase; c) compare the differential voltage on the line during the zero-phase with a reduced-bit-value-threshold, wherein the reduced-bit-value-threshold is less than a bit-value-threshold that is used during active communication. If the differential voltage on the line during the zero-phase exceeds the reduced-bit-value-threshold, then the calibration apparatus adjusts the value of the variable termination-resistance and returns to step b). If the differential voltage on the line during the zero-phase does not exceed the reduced-bit-value-threshold, then the calibration apparatus stores the current value of the variable termination-resistance for subsequent use during active communication.

Calibration apparatus for a communication system

The present disclosure relates to a transceiver () comprising a first and second terminal, a signal generation unit a signal generation unit () for generating a differential output voltage (Vout) between the terminals, a sensor unit () configured to measure an electric current (Iout) when flowing through one of the terminals, and a control unit () for controlling the signal generation unit, wherein the control unit is configured to control the signal generation unit during a calibration phase to generate a predetermined differential output voltage reference pattern (), wherein the sensor unit is configured to measure a calibration current unit during the calibration phase, and wherein the control unit is configured to calibrate the signal generation unit depending on the calibration current. The present disclosure also relates to a method for the transceiver.

Transceiver for transmitting and receiving signals and method for the transceiver

A switched current control module comprises a hysteretic control component arranged to receive high and low threshold values and an indication of a current flow through a load, and to output a switched current control signal based on a comparison of the current flow indication to the high and low threshold values. A threshold generator is arranged to generate the high and low threshold values based on a base threshold value and a hysteretic excursion value. A base threshold value generator is arranged to generate the base threshold value based on the current flow indication and a setpoint value. A hysteretic excursion value generator is arranged to receive an indication of a switching frequency of the switched current control signal output by the hysteretic control component, and to generate the hysteretic excursion value based on the indicated switching frequency of the switched current control signal.

Switched current control module and method therefor

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Toulouse, France

Tristan Bosvieux