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FT232r is a rs-232 bridge, this will not work for u r application of interfacing to hp printer..
Bcoz printer is a USB device.. and FT232R also a device... and to interface device u need a host...
to interface to printer u probably don't need any IC, you need to have a connector on board to recive hp printer usb connector, since u have host functionality in u r controller, u need to add drivers for HP printer and start working..