mini usb connector configuration features

mini usb connector defines the following four transfer types.
1 control transfer: the scart splitter cable device sends short commands and queries, or the state of the receiving device sends a response.
2 interrupt transmission: a very small data packet transmission in order to ensure rapid response, such as a mouse or keyboard.
Block Transfer: transfer hdmi wall plate large amounts of data with error detection, such as a printer or hard disk.
3 synchronous transmission: no error detection, real-time streaming data transmission, such as speakers.