SIGNAL TRANSFER METHOD AND SIGNAL TRANSFER DEVICE

摘要

PURPOSE: To obtain advantages of a data stream which a synchronous interface has while avoiding disadvantages of an asynchronous interface by quasi- synchronously transmitting in formation through a phase adjustment means. CONSTITUTION: The whole of an interface signal is inputted to a device A through a phase adjustment means 3. This means purposes to compensate the phase deviation of a signal, which arrives at the phase adjustment means 3 from a device B, to the internal clock of the device A. All of a data signal AD and a control signal AC leaving a part 3a of the phase adjustment means 3 are adjusted with the internal clock pulse of the device A. When the device A is in the reception mode, a data route is so gated that data from the device B coming from the interface passes the phase adjustment means 3 before being inputted to the reception logic circuit of the device A. When the device A is in the transmission mode, the output route of the device A is directly connected to the interface of the device B.