BIDIRECTIONAL TRANSCEIVER AND BUS INTERFACE WITH THE SAME

摘要

PURPOSE: A data transceiver and a bus interface having the data transceiver is provided to perform a stable operation in the time of variation of a load, and to decrease a chip size by transmitting and receiving a data signal through a serial bus. CONSTITUTION: A bus interface(100) is connected between a serial bus(200) and a function device(300). The bus interface(100) includes a voltage regulator(110), a data transceiver(120), a serial bus interface(130), and a device controller(140). The voltage regulator(110) supplies the second power voltage(VRR) in the second voltage range by using the first power voltage(VDD) in the first voltage range. The data transceiver(120) converts bus specific data signals into interface specific data signals or converts the interface specific data signals into the bus specific data signals by using the first power voltage(VDD) and the second power voltage(VRR). At this time, the bus specific data signals are the first encoded data signals modulated into a bus specific format, and the interface specific data signals are the second encoded data signals modulated into an interface specific format. The serial bus interface(130) performs an interface between device specific data signals. The device controller(140) controls the function device by responding to the device specific data signals.