The CoreLink QVN-400 Network Interconnect Advanced Quality of Service for Virtual Networks has the following key features:
Enables the prevention of congestion between traffic flows in the system, by enabling the system designer to separate masters with conflicting requirements on to different VNs. For example, high-bandwidth bus traffic sources can be separated to prevent blocking the flow of latency critical bus traffic.
You can configure up to eight VNs.
You can configure a maximum of four VNs on any single master or slave interface. You can configure virtual networks by assigning them to the addressable paths between masters and slaves.
You can configure a maximum of four virtual networks on any single connection between master and slave interfaces within the NIC.
You can configure the virtual network token request mechanism to be exported with the master and slave interfaces.
Works over interconnects configured as AXI3 and AXI4.
Works with the other licensable features, for example QoS-400 and TLX-400.
You can configure slave and master interfaces for lower latency by pre-allocating tokens.
You can dynamically mask low priority transactions from a VN termination ports arbitration.