Bus communication transceiver

摘要

A semiconductor device including a bus communication transceiver configured to be adopted in an automobile, including a transmission circuit to receive an input signal from an input node and generate a transmission signal; a bus connection node to couple with an external single wire bus to transmit the transmission signal to the external single wire bus and to receive a reception signal from the external single wire bus, the external single wire bus being coupled with an on-board battery of the automobile; a reception circuit to receive the reception signal or the transmission signal from the single wire bus to generate an output signal; and a delay time measurement circuit to measure a delay time from a rising time of the input signal to a rising time of the output signal generated from the input signal, and to generate a delay time measurement result signal group.

主权项

1. A semiconductor device including a bus communication transceiver configured to be adopted in an automobile, comprising:
an input node configured to receive an input signal; a transmission circuit configured to receive the input signal from the input node and to generate a transmission signal; a bus connection node configured to couple with an external single wire bus to transmit the transmission signal to the external single wire bus and to receive a reception signal from the external single wire bus, the external single wire bus being coupled with an on-board battery of the automobile; a reception circuit configured to receive the reception signal or the transmission signal from the single wire bus to generate an output signal; an output node configured to output the output signal; and a delay time measurement circuit configured to measure a delay time from a rising time of the input signal to a rising time of the output signal generated from the input signal, and to generate a delay time measurement result signal group showing the measurement results, wherein the transmission circuit comprises an output waveform adjustment circuit configured to adjust a voltage inclination in a falling waveform of the transmission signal generated from the input signal, based on the delay time measurement result signal group.