官网地址:
http://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT232R.pdf
http://www.ftdichip.com/Products/ICs/FT232R.htm
256 Byte receive buffer and 128 Byte transmit buffer utilising buffer smoothing technology to allow for high data throughput.
Adjustable receive buffer timeout.
http://www.ftdichip.com/Support/Documents/AppNotes/AN_152_Detecting_USB_%20Device_Insertion_and_Removal.pdf
How to Detect a USB Device Insertion and Removal

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