The NY5 series IC is a powerful 4-bit micro-controller based sound processor. There are 4 channels that are configured as speech or MIDI, and all of them can be auto-played back simultaneously. By using the high fidelity ADPCM speech synthesis algorithm, it can produce outstanding quality voices. Wide range sampling rate up to 44.1kHz and different volume level are supported. It is also equipped two kinds of audio outputs with fine resolution, including a current D/A converter and a PWM direct-drive. The RISC MCU architecture is very easy to program and control, various applications can be easily implemented. There are 48 instructions, and most of them are executed in single cycle. Furthermore, in addition to the HALT mode (sleep mode), it offers the SLOW mode to minimize power dissipation.