The node controller receives transactions from a master device, communicates with {HEAD ~ a master device} as another master device or as a slave device, and queues transactions received from {TAIL ~ a master device} 
The node controller receives transactions from a master device , communicates with { HEAD ~ a master device } as another master device or as a slave device , and queues transactions received from { TAIL ~ a master device }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL