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PCIE SWITCH FOR AGGREGATING A LARGE NUMBER OF ENDPOINT DEVICES

  • US 20180101498A1
  • Filed: 10/12/2016
  • Published: 04/12/2018
  • Est. Priority Date: 10/12/2016
  • Status: Active Grant
First Claim
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1. An apparatus, comprising:

  • a root port for coupling to a root complex via a serial computer expansion bus;

    a plurality of endpoint ports, each endpoint port for coupling to an endpoint device via a serial communication link, wherein each endpoint port is associated with a function number;

    a downstream buffer disposed in a first communication pathway from a downstream output of the root port to each of the endpoint ports, wherein the downstream buffer queues transaction layer packets received from a downstream output of the root port, wherein a function number is identified from each transaction layer packet in the downstream buffer, and wherein each transaction layer packet in the downstream buffer is directed to a downstream input of an endpoint port associated with the identified function number; and

    an upstream buffer disposed in a second communication pathway from an upstream output of each of the endpoint ports to an upstream input the root port, wherein the upstream buffer queues transaction layer packets received from an upstream output of each endpoint port, and wherein the transaction layer packets in the upstream buffer are directed to an upstream input of the root port.

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