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Microprocessor with integrated interfaces to system memory and multiplexed input/output bus

  • US 20020103988A1
  • Filed: 03/22/2002
  • Published: 08/01/2002
  • Est. Priority Date: 12/18/1996
  • Status: Abandoned Application
First Claim
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1. A single-chip IC device comprising:

  • CPU means for performing digital arithmetical and logical processes;

    multiplexing I/O bus controller means for managing address and data communication to first external leads to an I/O bus;

    memory controller means for managing address and data communication to second external leads to a memory bus for communicating with one or more random access memory devices; and

    local bus means formed on said single-chip IC device for providing communication in parallel between said CPU means, said I/O bus controller means, and said memory controller means;

    said I/O bus controller means configured to route memory requests from I/O devices through said memory controller means directly to said one or more random access memory devices.

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