The routing data generation circuit generates and adds {HEAD ~ routing data} to {TAIL ~ the data frame} received by the buffer 
to
The routing data generation circuit generates and adds { HEAD ~ routing data } to { TAIL ~ the data frame } received by the buffer
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH