Patent ID: 8386682

Claim:
An apparatus comprising: a first bus; a first plurality of requestors coupled to the first bus; a first arbitrator to receive from the first plurality of requestors access requests which each request a respective access to the first bus, the first arbitrator further to perform a first arbitration based on the access requests, the first arbitration to select a first requestor of the first plurality of requestors, the first arbitrator further to send, based on the first arbitration, a first grant message to trigger a carrying of a first message on the first bus, the first message exchanged by the first requestor; a second bus coupled to the first arbitrator, wherein the first grant message further to trigger a carrying of the first message on the second bus; and a grant order queue to store the first grant message, the grant order queue further to provide the first grant message to trigger the carrying of the first message on the second bus.