[usb connection with micro]

i wana send and recive data in micro project with usb port but i dont know any thing about it i need some datasheets and source about usb&its conection with micro please help me
you can also send your data to"[email protected]"
thanks

[Send & Receive DTMF with MT8880]

i cont work with mt8880 please help me how can i use a micro controller beside it? what is it circuit? ???