Multi-option setting device for a peripheral control chipset

A multi-option setting device for use in association with a connecting pin of a chipset, the multi-option setting device comprising:

• voltage setting means for generating a user-specified input voltage whose value corresponds to at least one input/output (I/O) function that can be performed by the chipset through the associated connecting pin, with the I/O function corresponding to a pre-specified range of voltage levels;
• a plurality of analog comparators, each having a positive input end connected to the user-specified input voltage and a negative input end connected to a preset reference voltage, wherein the analog comparators are used to generate a first logic signal when the user-specified input voltage is greater in level than the reference voltage connected thereto, and a second logic signal when the user-specified input voltage is lower in level than the reference voltage connected thereto;
• and
• a plurality of latch circuits, each connecting to the output of the corresponding analog comparator, for latching the output signal of the analog comparator, wherein output signals of the latch circuits are used for setting the connecting pin to the user-selected I/O function corresponding to the user-specified input voltage.