Circuit device, electronic apparatus, and vehicle

Abstract

The circuit device includes an HS driver as a transmission circuit in an HS mode of USB, an amplitude detection circuit configured to detect a signal amplitude of a USB signal, an amplitude setting circuit configured to set an amplitude setting value of the signal amplitude of the USB signal, and a judgment circuit. The amplitude setting circuit varies the signal amplitude with the amplitude setting value in a detection period, and the judgment circuit determines the amplitude setting value to be used by the amplitude setting circuit when performing HS communication based on a detection result by the amplitude detection circuit in the detection period.

Dependencies are inferred from the claim text.