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Master-slave communication bus controllers

  • US 20020184424A1
  • Filed: 03/17/2001
  • Published: 12/05/2002
  • Est. Priority Date: 03/17/2001
  • Status: Active Grant
First Claim
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1. A communications system comprising:

  • one or more communication buses implemented on a backplane having one or more interface slots;

    one or more controller cards communicating with the communication buses through said one or more interface slots, each controller card comprising;

    a controller; and

    at least two independent communication channels provided for connecting a host with said one or more communication buses, wherein the controller determines and designates the status of said one or more controller cards such that a first controller card is designated to have primary status if the first controller card is inserted in a first interface slot while remaining interface slots are empty.

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