UNIVERSAL SERIAL BUS INTERFACE DEVICE OF PROCESSOR

摘要

A USB interface device for a processor is provided to realize an effective data transceiving interface between the processors and a host included in one system by multiplexing a USB interface in the processor. A USB multiplexer(121) is installed to one of the processors(110,120) included in the system. The USB multiplexer is connected to the USB interface(122) included in the processor in which the USB multiplexer is installed and one physical device(130) connecting a physical layer with the host(140) according to a rule fixed in a USB protocol. The USB multiplexer is connected to the USB interface(111) of other processors in parallel. The USB multiplexer communicates a data between the processor and the host through multiplexing.