Device and method for automatically detecting low voltage differential signal interface matching resistor

摘要

The present disclosure provides a device and method for automatically detecting an LVDS interface matching resistor. In the device, multiple detection interface units each including two terminals for being connected with two ends of the LVDS interface matching resistor, are set; at least one switch unit is connected between corresponding detection interface unit and a processing unit and the switch unit and the detection interface unit are set correspondingly; and a processing unit is used for controlling the switch unit to be in the conducting state, so that the detection interface unit corresponding to the switch unit in the conducting state and the processing unit form a detection loop, and by use of the detection loop, the processing unit performs measurement to the LVDS interface matching resistor connected to the detection interface unit corresponding to the switch unit in the conducting state.

主权项

1. A device for automatically detecting a low voltage differential signal (LVDS) interface matching resistor, comprising a plurality of detection interface units, at least one switch unit and a processing unit; wherein:
each detection interface unit comprises two terminals for being connected with two ends of the LVDS interface matching resistor; the at least one switch unit and the plurality of detection interface units are set correspondingly, and a switch unit in the at least one switch unit corresponding to a detection interface unit is connected between the processing unit and the corresponding detection interface unit; the processing unit is used for controlling the switch unit corresponding to the detection interface unit to be in a conducting state, so that the detection interface unit corresponding to the switch unit in the conducting state and the processing unit form a detection loop, and the processing unit, by use of the detection loop, performs measurement to the LVDS interface matching resistor connected to the detection interface unit corresponding to the switch unit in the conducting state.