Patent ID: 8810058
Filing Date: 2014-08-19
Classification: H03K,H04B

Abstract:
1. An interface for coupling an electronic device to a power source control component, the electronic device providing a state signal and a serial communication signal, comprising: a single node coupled to the electronic device, the single node receives the state signal and the serial communication signal from the electronic device; a switch circuit which provides a control signal for the power source control component, the switch circuit having a plurality of states each of which alter the control signal provided to the power source control component, the switch circuit capable of switching states by the receipt of the state signal and the serial communication signal at the single node; and a switch buffer circuit, an input of the switch buffer circuit being coupled to the single node and an output of the switch buffer circuit being coupled to the switch circuit, the switch buffer circuit comprising an impedance network having a charge/discharge time constant configured to selectively cause the switch circuit to switch states in response to the state signal being received at the single node and to prevent the switch circuit to switch states in response to the serial communication signal being received at the single node.