Bi-directional single wire interface

摘要

A single-wire, bi-directional communication protocol is provided in which the sending device transmits its clock frequency and its bit transmission period and data through a predefined waveform pattern or "learning sequence" that is recognizable by the receiving device and in a period of time, as measured in number of sending clock cycles, that is known to the receiving device. By clocking the full length of the predefined waveform pattern using its own internal clock, the receiving device becomes aware of the bit transmission period of the sending device.