Network interface card asynchronous interface with signalling lines and at least eight data lines for switching between forward channel and reverse channel

摘要

The present invention relates to an asynchronous interface for communication between two devices. It comprises signalling lines and at least eight data lines and is especially suitable for connections over short distances the interface provides a signal ground line, power supply line, power supply ground line and seven signalling lines between the two devices. The present invention also presents a method for communication by an asynchronous interface. The method comprises a procedure for changing the transmission direction from a forward direction to a reverse direction, a procedure for transmitting data in the reverse direction and a procedure for changing back the transmission direction to the forward direction from the reverse direction.