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Bus for high frequency operation with backward compatibility and hot-plug ability

  • US 6,185,642 B1
  • Filed: 07/15/1998
  • Issued: 02/06/2001
  • Est. Priority Date: 07/15/1998
  • Status: Expired due to Term
First Claim
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1. A method of providing selectable data transmission speeds between a peripheral device and a system bus of a computer system, said method comprising the steps of:

  • connecting a bridge to the system bus, said bridge being capable of transmitting data at a plurality of transmission speeds;

    coupling said peripheral device to said bridge trough a peripheral bus, said peripheral device and said peripheral bus being capable of transmitting data at a plurality of transmission speeds;

    determining a transmission speed common to all of said peripheral device, said peripheral bus, and said bridge to transmit data, said transmission speed having an associated performance mode with a transmission control protocol; and

    setting an effective transmission speed of said bridge, said peripheral bus and said peripheral device by clocking data on both a rising edge and a falling edge of a clock signal.

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