A circuit apparatus includes physical layer circuits to which buses compliant with the USB standard are coupled, a processing circuit that performs an FS transfer process, a bus monitoring circuit that monitors the buses, and a bus switching circuit that turns on or off the coupling between a first bus and a second bus based on the result of the monitoring. One of the physical layer circuits includes an FS receiver, an FS driver, and a pull-up control circuit, and the other physical layer circuits includes an FS receiver and an FS driver. When FS_J is detected on the second bus, the bus monitoring circuit turns off the coupling achieved by the bus switching circuit, turns on the pull-up operation performed by the pull-up control circuit, and turns on the FS transfer process performed by the processing circuit.
CIRCUIT APPARATUS, ELECTRONIC INSTRUMENT, AND VEHICLE
24.02.2022
Patent
Elektronische Ressource
Englisch
Europäisches Patentamt | 2020
|Europäisches Patentamt | 2019
|PROTECTION CIRCUIT, ELECTRONIC APPARATUS, AND VEHICLE
Europäisches Patentamt | 2025
|Electronic key, self-closing circuit, instrument, burglar alarm, controller and electric vehicle
Europäisches Patentamt | 2021
Vehicle electronic instrument test tool and electronic instrument test method
Europäisches Patentamt | 2023
|