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Method and apparatus for using multiple FIFOs to improve flow control and routing in a communications receiver

  • US 5,777,987 A
  • Filed: 12/29/1995
  • Issued: 07/07/1998
  • Est. Priority Date: 12/29/1995
  • Status: Expired due to Term
First Claim
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1. A flow control method, operable in a receiving node of a packetized communication system, comprising the steps of:

  • applying a received packet from a transmitting node to a primary FIFO in said receiving node and to a secondary FIFO in said receiving node;

    determining whether said received packet is successfully applied to said secondary FIFO;

    purging said received packet from said secondary FIFO responsive to a determination that said received packet was not successfully applied to said secondary FIFO;

    purging said received packet from said primary FIFO responsive to a determination that said received packet was successfully applied to said secondary FIFO;

    determining the readiness of said receiving node to receive another packet in accordance with status of said primary FIFO; and

    applying a flow control signal to said transmitting node indicative of the readiness of said receiving node to receive another packet.

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