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One-way transaction tagging in a switch crossbar

  • US 7,139,836 B1
  • Filed: 08/08/2001
  • Issued: 11/21/2006
  • Est. Priority Date: 08/08/2001
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a sender includinga first controller configured to receive a data item including a transmit data portion and a retain data portion;

    a first tag generator configured to generate a first tag and associate the first tag with the retain data portion;

    a first transmitter configured to send the transmit data portion, but not the first tag, to a target;

    wherein the target includesa first receiver configured to receive the transmit data portion sent by the sender;

    a second controller configured to identify return data corresponding to the transmit data portion;

    a second tag generator configured to independently generate a second tag and associate the second tag with the return data;

    a second transmitter configured to send the return data and the second tag to the sender;

    wherein the sender includesa second receiver configured to receive the return data and the second tag; and

    wherein the first controller is configured to identify the retain data portion using the second tag and associate the return data with the retain data portion to create a reverse item.

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