In one embodiment, {HEAD ~ the apparatus} includes a buffer and {TAIL ~ a routing data generation circuit} 
In one embodiment , { HEAD ~ the apparatus } includes a buffer and { TAIL ~ a routing data generation circuit }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL