Network-on-Chip Communication Method and Network-on-Chip Communication System Capable of Performing Communications for Different Networks

A network-on-chip (NoC) communication system, comprising:

• a first NoC;
• a second NoC;
• a bridge node in the first NoC configured to support transactions from a plurality of channels;
• a first request node in the second NoC linked to the bridge node for communicating with the bridge node through the plurality of channels;
• a requester device;
• a second request node in the second NoC linked to the requester device;
• a completer device;
• and
• a third request node in the first NoC linked to the completer device;
• wherein the first NoC and the second NoC are linked through the bridge node and the first request node according to a protocol, the requester device is configured to transmit upstream transactions to the completer device through the second request node in the second NoC, the first request node in the second NoC, the bridge node in the first NoC, and the third request node in the first NoC, the first NoC and the second NoC are communicated to perform a snoop requesting process, a cache maintenance operation (CMO) requesting process, a cache stashing requesting process, or a distributed virtual memory (DVM) requesting process, and when the protocol is an advanced extensible interface coherency extensions (ACE) protocol, an ACE_lite protocol, an ACE_lite+DVM protocol, or a coherent hub interface (CHI) protocol, the upstream transactions comprise snoop messages, CMO messages, cache stashing messages, or DVM messages.