公开(公告)号：US20200049754A1

公开(公告)日：2020-02-13

申请号：US16101213

申请日：2018-08-10

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Richard Edwin HUBBARD ,  Abhijeeth AAREY PREMANATH ,  Terry MAYHUGH ,  Mark Edward WENTROBLE ,  Wesley Ryan RAY

IPC: G01R31/02 ,  H04L12/24 ,  G01R19/25

Abstract: 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.