TWO-WAY DATA TRANSFER CONTROL METHOD

摘要

PURPOSE:To attain sure data transfer at high speed regardless of a delay time between a master and a slave equipment by preparing two strobe signals for synchronization and returning the strobe signal from the master equipment after the adjustment of the timing. CONSTITUTION:A strobe generator 2 generates a prescribed strobe signal and sends the signal to a slave equipment as the 1st strobe signal and to a synchronizing signal selection circuit 3. The slave equipment uses the 1st strobe signal as a synchronizing signal (clock) to receive (output) a data by a register 6. In this case, the 1st strobe signal is subject to timing adjustment and waveform shaping by a timing adjustment means 8 and is returned to the master equipment as the 2nd strobe signal. A register 4 receives the data by using the 2nd strobe signal as the synchronizing signal. Thus, the data is transmitted in a sure timing regardless of the delay time.