Electronic devices and operating mode control thereof

摘要

In an electronic device employed in a system where packets are sent and received between a plurality of electronic devices connected by a bus (8), a bias voltage is not outputted to the bus in a first operating mode adopted from when a power supply is thrown until an internal initialization process is complete and a bias voltage is outputted to the bus in a second operating mode adopted after the initialization process is complete so that communication system hang-ups at the time of throwing the power supply can be avoided.