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System-on-a-chip

  • US 6,816,750 B1
  • Filed: 06/09/2000
  • Issued: 11/09/2004
  • Est. Priority Date: 06/09/2000
  • Status: Expired due to Fees
First Claim
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1. A system fabricated on a single integrated circuit chip comprising:

  • a microprocessor operating from a high speed bus and providing overall control of said system;

    a peripheral bus operating in conjunction with said high speed bus through a bus bridge; and

    a first set of processing resources operating from said high speed bus and a second set of processing resources operating from said peripheral bus, said first set of processing resources comprising;

    a memory interface for interfacing said system with an external memory;

    a direct memory access engine for controlling the exchange of information between selected ones of said resources and said external memory through said memory interface; and

    a boot memory for storing boot code for initiating operation of said system;

    and said second set of processing resources comprising;

    an interrupt controller for issuing interrupt requests to said microprocessor in response to interrupt signals from selected ones of said resources;

    a set of programmable timers for generating timed interrupt signals; and

    a phase-locked loop for generating timing signals for timing selected operations of said system.

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