| 摘要 |
PURPOSE: To provide an inexpensive unit connection interface small in the number of signals and to improve the reliability of a data transfer. CONSTITUTION: When a shift register 9 transmits the prescribed data received from the unit of a preceding stage to the unit of a poststage after the start of a data transfer for all the connected units is notified to each unit, the error instruction for destroying the prescribed data received by an SR latch 13 is outputted to all the units before the transfer by a notifying means is terminated when a check circuit 12 detects the format error of the prescribed data received from the unit of the preceding stage. |
