LincChip™ Use

The LincCore and the HostCtl can be used in various combinations to provide access to the SCI fabric in many different ways. The following shows how the upper layer protocol in a node can interact with SCI ports with or without the use of backend 64-bit bus.

	Dedicated fabric access.
	Fabric access via backend.

LincChip components can also be used to build a switch.

Dedicated fabric access

In this case a tight integration of the fabric access facility and the upper layer functions is possible and reduced latency can be achieved. Here the LincCore resides in the same device as the upper layer and the upper layer can directly access the buffers via the interface LincCore provides. In this arrangement it is possible to contain several instantiations of LincCore to provide multiple ports to the fabric. A simple example would be a node with three instantiations of LincCore. This allows building hypercube interconnect between nodes.

Fabric access via backend

In this case the upper layer functions interact with HostCtl. The HostCtl accesses the buffers of the LincCore via the backend bus and the HostCtl attached to the LincCore. Again, multiple access ports to the fabric is also possible in this case.

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