Combining plural data lines and clock lines into set of parallel lines and set of serial lines

摘要

A data transfer system includes a plurality of functional blocks each provided with a function module for controlling data transfer between memories of the plurality of functional blocks, by being connected to a function module of other functional blocks via n sets of data signal lines and clock signal lines so that the data transfer proceeds in a synchronized manner. Each of the n sets of data signal lines and clock signal lines is appropriately combined with one another depending on a required condition for communicating with destination functional blocks, such that a plurality of sets of data signal lines and clock signal lines are used for parallel transfer and a single set of a data signal line and a clock signal line is used for serial transfer.