USB interface data transmission device and USB interface data communication system

摘要

The USB interface data transmission device comprises a USB interface controller unit, a dynamic data transmission unit, a central controller unit, a transmission mode configuration unit, a driver program memory and a data transmission interface. In them: The dynamic data transmission unit includes a data input node and a data output node, wherein the data input node supports the data downloading and the data output node support the data uploading, while when necessary the data input node and the data output node support each other's functions by changing their respective data uploading and downloading functions. In a download mode both the data input node and the data output node support the data downloading operation and in an upload mode both support the data uploading operation.