Patent ID: 7107465
Filing Date: 2006-09-12
Classification: G06F

Abstract:
1. A PCI bus interface circuit for the voltage supply of a PCI plug-in card that can be connected to a PCI bus, the PCI bus interface circuit comprising: a first input for connection to a main voltage supply line of the PCI bus; a second input for connection to an auxiliary voltage supply line of the PCI bus; an output for outputting a supply voltage to the PCI plug-in card; a first transistor for switching a main supply voltage that is present at the first input to the output, the first transistor having a first control terminal connected to the second input so that the first transistor switches the main supply voltage that is present at the first input to the output if no auxiliary supply voltage V a second transistor for switching an auxiliary supply voltage V a third transistor, which, given the simultaneous presence of a main supply voltage V