System bus with a variable width selectivity configurable at initialization

CAFC
  • US 6,434,654 B1
  • Filed: 03/26/1999
  • Issued: 08/13/2002
  • Est. Priority Date: 03/26/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A bus bridge for transferring data between devices of a computer system, said bus bridge comprising:

  • a host bridge for coupling to a primary bus, said host bridge further comprising a host interface;

    a companion bridge for coupling to a secondary bus, said companion bridge further comprising a companion interface;

    a control bus coupled to said host interface and to said companion interface for transmitting control signals between said host interface and said companion interface; and

    a variable width data bus coupled to said host interface and to said companion interface for transmitting serialized data blocks between said host interface and said companion interface, wherein said host bridge and said companion bridge determines an effective width of said variable width data bus upon power-on reset of said computer system.

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