Texas Instruments Corporation

Terry Mayhugh

Mark Edward Wentroble

Baoson Nguyen

Richard Edwin Hubbard

Wesley Ray

Abhijeeth Aarey Premanath

Soji K John

A CAN bus transceiver includes CAN bus fault detection circuitry that can provide detailed information to simplify the task of the service technician when there is a CAN bus fault. Voltage and current measurements of the CAN bus are made and from them a fault type is determined. A time-domain reflectometer monitors the CAN bus signals for transmitted and reflected signals and from them a distance to the fault is determined. Either or both values are provided to a service technician to allow error determination and correction.

Control area network (CAN) bus fault detection

A method for trimming reference voltage circuitry includes defining a desired target reference voltage for a set of at least one die. At least two reference voltages are measured for at least two different trim settings associated with a given die of the at least one die. A modified target reference voltage is determined for the given die based on the at least two measured reference voltages. A trim setting associated with the reference voltage circuitry of the given die is set according to the modified target reference voltage so as to compensate for an offset voltage and substantially achieve the desired target reference voltage.

Trimming for accurate reference voltage

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Richardson, TX, United States of America

Terry Mayhugh