| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for providing an interface signal between a plurality of integrated circuits. SOLUTION: A circuit that generates an interface signal between a first and a second integrated circuit (IC) includes a reference circuit that provides a reference signal, an interface circuit, and a circuit element. The interface circuit is implemented on the first IC, operatively couples to the reference circuit, receives the reference signal and a data input, and generates the interface signal. The circuit element is implemented on the second IC, operatively couples to a control circuit, receives the interface signal, and provides an output signal. The reference signal may be a voltage or current signal, and is generated in the first or second IC. The interface circuit is implemented with a current mirror coupled to a switch array, and is oversampled to ease a filtering requirement. COPYRIGHT: (C)2011,JPO&INPIT
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