NoC Communication - NoC Communication - 1.1 English - PG313

Basic NoC read and write transactions are shown in the following figures. The following list summarizes a typical transaction:

1. An AXI master sends read/write requests to a connected NoC access point (NMU).
2. A PL AXI master must enable traffic only when all of the PL AXI slaves it communicates with are out of reset.
3. The NMU relays the requests through a set of NoC packet switches (NPSs) before the requests reach a destination (NSU or output port).
4. The NSU passes the received requests to the attached AXI slave for processing.
5. While processing the requests, the AXI slave sends read/write responses back to the attached NSU.
6. The NSU relays the responses through the NPS network to the NMU from which the requests originated. From here, the NMU communicates the responses to the AXI master.