Patent ID: 6411123
Filing Date: 2002-06-25
Classification: G06F

Abstract:
A multi-option setting device for use in association with a connecting pin of a chipset for the purpose of allowing user-selection from multiple setting options to set the chipset to perform one of the input/output (I/O) functions through the associated connecting pin, the multi-option setting device comprising:voltage setting means for generating a user-specified input voltage whose value corresponds to at least one I/O function that can be performed by the chipset through the associated connecting pin, with each I/O function corresponding to a prespecified range of voltage levels; a voltage comparison circuit for comparing the user-specified input voltage against a plurality of preset reference voltages to thereby generate an output signal indicative of which prespecified voltage range the user-specified input voltage lies; a latch circuit for latching the output signal of the voltage comparison circuit; and a control unit, in response to the latched output signal from the latch circuit, for setting the connecting pin to the user-selected I/O function corresponding to the user-specified input voltage.