− Support downstream port configuration by reading external EEPROM − Support customized PID, VID by reading external EEPROM − Backward compatible to USB specification Revision 1.1 − 1 control pipe (endpoint 0, 64-byte data payload) and 1 interrupt pipe (endpoint 1, 1-byte data payload) − Downstream ports support HS, FS, and low-speed (LS)traffic − Upstream port supports both high-speed (HS) and full-speed (FS) traffic − Support 4/3/2 downstream ports by I/O pin configuration
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