System for connecting plurality of electronic units to data and clock buses wherein transmitting and receiving data in synchronization with transmitting and receiving clock signals

摘要

A data processing apparatus, including a number of electronic circuit units, in which high-speed data can be transmitted among the electronic circuit units. When data is transmitted from one electronic circuit unit to another electronic circuit unit, a clock signal to fetch the data in the sink side electronic circuit unit is transmitted from the source side electronic circuit unit via a clock signal line having the same signal propagation delay characteristics as those of the data signal line.