System on Chip, referred to as SoC, is also a system on a chip. In a narrow sense, it is the chip integration at the core of the information system, which integrates the key components of the system on a chip. In a broad sense, SoC is a tiny system. If the central processing unit (CPU) is the brain, then SoC is the system including the brain, heart, eyes and hands. Academic circles at home and abroad generally tend to define SoC as the integration of microprocessor, analog IP core, digital IP core and memory (or off-chip storage control interface) on a single chip, which is usually customized by customers or for specific purposes standard products.