Printing apparatus and control method thereof

A control method of a printing control apparatus for a printing apparatus that performs printing by using a printhead formed from a plurality of headchips, the printing control apparatus including a first chip configured to integrate (1) a CPU, (2) a table configured to store processing contents set by the CPU, and (3) a processing circuit configured to process a plurality of data and transfer the processed plurality of data to chips of a next stage, the method comprising:

• connecting each of a plurality of second chips to the first chip via a predetermined interface, each second chip integrating (1) a plurality of processing circuits and (2) a control circuit;
• processing, by the plurality of processing circuits integrated in each of the plurality of second chips, print data based on the processed data transferred from the first chip to be used in respective ones of the plurality of headchips in accordance with the processing contents set in the table;
• waiting for processing completion in a first one of the plurality of processing circuits integrated in each of the plurality of second chips, and causing a second one of the plurality of processing circuits integrated in each of the plurality of second chips to execute next processing for the print data in response to the processing completion in the first one of the plurality of processing circuit integrated in each of the plurality of second chips in accordance with the processing contents set in the table;
• and
• driving, based on the print data processed by the plurality of processing circuits integrated in each of the plurality of second chips, each of a corresponding plurality of headchips by a plurality of drive circuits.