IC Design of 8×8 Digital CNN with Optoelectronic Interface

ABSTRACT: The paper presents a new optoelectronic CNN system which consists of two integrated circuits connected through the flip-chip bonding: a) the photonic GaAs matrix of receivers and emitter; b) the CMOS chip of digital CNN cells with programmable 5-bit weights and threshold currents. This solution is easier to design and is more reliable than analogue circuits. The main advantages of our system include parallel input/output of considered image and high precision of programmable weights. Although the processing speed of the digital CNN is considerably lower than that of analogue implementations, it is fast enough for efficient image processing by complex CNN programs.