Embedded-DSP SuperH Family and Its Applications

applications are mobile communication terminals, digital consumer equipment, and multimedia systems. One example of digital consumer equipment is the digital still camera. Hitachi has developed a digital camera system based on the SH-DSP (Fig. 1). ABSTRACT: Recently sales have grown markedly in the field of mobile communication terminals such as global system for mobile communications (GSM), personal digital cellular telecommunication system (PDC), personal handyphone system (PHS), and in digital consumer equipment such as car navigation systems and digital still cameras. These systems are configured with a CPU and a general-purpose digital signal processor (DSP). The CPU executes communication protocol control and system control; the general-purpose DSP performs signal processing such as speech compression and image processing. For mobile communication systems and digital consumer products for the near future, integration of the CPU and DSP is required to achieve a low-price, small-size, low-power consumption system. Hitachi, Ltd., has introduced a new-generation microcomputer SHDSP into this market. The SH-DSP consists of a SuperH-RISC (reduced instruction set computer) microcomputer and a high-performance DSP engine. With the SH-DSP, Hitachi has enhanced its product line for a new wave of applications, such as digital still cameras, mobile communication terminals, and speech processing systems.