Patent
1995-08-24
1997-07-01
Ray, Gopal C.
395882, G06F 1338, G06F 1340
Patent
active
056447345
ABSTRACT:
A method and device for multiplexing temporally constant signals from a PCI compliant device with sideband signals on an interface connector coupled between the PCI compliant device and an external device. The device comprises a control signal generator coupled to the interface connector for generating a control signal, and a selectable connector, responsive to the control signal for alternatively coupling the sideband signals and the temporally constant signals to the interface connector. The method comprises the steps of receiving a command signal in the PCI compliant device from the interface connector, generating a pulse in response to the command signal, isolating the sideband signals from the interface connector in response to the leading edge of the pulse, applying the temporally constant signals to the interface connector until they are stored in the external device, isolating the temporally constant signals from the interface connector, and applying the sideband signals to the interface connector in response to the trailing edge of the pulse.
REFERENCES:
patent: 5450551 (1995-09-01), Amini et al.
patent: 5507002 (1996-04-01), Heil
patent: 5528764 (1996-06-01), Heil
patent: 5533204 (1996-07-01), Tipley
patent: 5557757 (1996-09-01), Gephardt et al.
"PCI Local Bus Specification", Production Version, Revision 2.0, PCI Special Interest Group, Apr. 30, 1993.
NCR Corporation
Ray Gopal C.
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