METHOD FOR TRANSFERRING DATA

摘要

PROBLEM TO BE SOLVED: To improve data transfer efficiency by transferring variable length data by a simple command in data transfer between independent processors. SOLUTION: At least one byte data and succeeding one byte address data are transferred to a DSP4. The DSP4 holds transferred data by data shift registers 12 and 13 at every byte. A writing signal creating circuit 15 creates a writing signal corresponding to the number of bytes of the data based on transferred address data and an LD signal, fetches data of the byte number corresponding to the signal from the data shift registers 12 and 13 into latch circuits 16 and 17 and outputs them to a circuit A or B.