Patent 7640371 was granted and assigned to NEC Corporation on December, 2009 by the United States Patent and Trademark Office.
When a program from a master device 1 is received during a burst mode, a slave device 2 judges that an address field is also treated as a data field and extracts data in the address field as the program. The slave device 2 uses a transmission FIFO 222 as an extension FIFO of a reception FIFO 224 during the burst mode.