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2. 发明公开

EP2312489A2 Method and circuit for providing interface signals between integrated circuits 审中-公开
标题翻译：方法和电路用于集成电路之间提供接口信号
公开(公告)号：EP2312489A2
公开(公告)日：2011-04-20
申请号：EP10014622.4
申请日：2000-10-17
申请人： Qualcomm Incorporated(1/3)
发明人： Sahota, Gurkanwal , Sani, Mehdi, Hamidi , Shahrokhinia, Sassan
IPC分类号： G06J1/00
CPC分类号： G06J1/00
摘要： Circuitry that generates an interface signal between a first and a second integrated circuit (IC). The circuitry 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 the control circuit, receives the interface signal, and provides an output signal. The reference signal can be a voltage or a current signal, and can be generated in the first or second IC. The interface circuit can be implemented with a current mirror coupled to a switch array, and can be oversampled to ease the filtering requirement. The interface signal can be a differential current signal having multiple (e.g., four, eight, or more) bits of resolution. The circuit element can be, for example, a VGA, a modulator, or other circuits.
摘要翻译：电路做产生第一和第二集成电路（IC）之间的接口信号的速率。该电路包括一个基准电路确实提供了一个基准信号到接口电路，和一个电路元件。该接口电路被实现在第一集成电路，可操作地耦合到参考电路，接收参考信号和数据输入，并产生接口信号速率。电路元件被实现在第二集成电路，可操作地连接到所述控制电路，接收接口信号，并且将输出提供信号。该基准信号可以是电压或电流信号，并且可以在第一或第二IC来生成。该接口电路可以具有耦合到开关阵列的电流镜来实现，并且可以被过采样，以缓解滤波要求。接口信号可以是差分电流信号具有多个（例如，四个，八个或更多个）分辨率的位数。电路元件可以是，例如，一个VGA，一个调制器，或其它电路。

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