FLEXIBLE ON-DIE FABRIC INTERFACE

This disclosure pertains to point-to-point interconnects. In particular, an apparatus comprising an agent block comprising circuitry to support a plurality of coherent protocols, is provided. The agent block comprises an interface to communicate with a fabric. The interface comprises: a global channel to use a first set of wires, wherein the global channel is to carry signals for initialization of the interface; a request channel to use a second set of wires, wherein the request channel is to carry address and protocol level command information associated with requests sent from the agent block; a response channel to use a third set of wires, wherein the response channel is to carry responses to the requests sent from the agent block; and a data channel to use a fourth set of wires, wherein the data channel is to carry data transfers from the agent block to other agents via the fabric.