PCI-E automatic allocation system

Details PCI-E automatic allocation system PCI-E automatic allocation system

2006-03-10

2008-11-04

Knoll, Clifford H (Department: 2111)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus interface architecture

C710S301000

Reexamination Certificate

active

07447825

ABSTRACT:
A PCI-E automatic allocation system which essentially consists of a detection module and a switch module, wherein the detection module detects the states of the logic signals on the ground pins of a first PCI-E slot with large lane width and a second PCI-E slot with small lane width in a computer system, to determine whether the first and second PCI-E slots hold any inserted expansion card; if the detection module detects an inserted expansion card in the first PCI-E slot rather than the second PCI-E slot, a switch control signal output is generated, to control the switch operation performed by the switch module, that is, transferring lane availability from the second PCI-E slot to the first PCI-E slot, with a view to enhancing the use of PCI-E lanes, speeding up data transmission, and overcoming a known drawback of PCI-E buses, that is, inflexible design.

REFERENCES:
patent: 5636347 (1997-06-01), Muchnick et al.
patent: 2007/0038794 (2007-02-01), Purcell et al.

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