Communication Interface Design of ARMDSP Dual-core System Technology Vertical and Horizontal TECHNOLOGY REVI EW Communication Interface Design of ARM/ DSP Dual-core System ■ Hunan Normal University Liu Bin Li Zhongyang ARM/ DSP system platform is an embedded system development platform built with ARM7 and DSP dual CPU. The system builds a complete embedded system hardware platform based on ARM and DSP. Through the embedded Linux operating system based on ARM, Micro Windows graphical interface and a large number of network service programs, a complete software system is built on ARM. Data exchange between ARM and DSP is realized through the host high-speed parallel interface (HPI), and data processing and real-time control are handed over to DSP. The software platform fully complies with the GPL standard. By providing complete embedded software and its source code, as well as the flexible tailorability of the platform, embedded products based on this platform can be easily developed. This paper introduces the overall design of the system and the communication interface design of ARM and DSP in detail. ARM DSP Dual-core Embedded System Communication Interface Keywords Introduction The core of the embedded system is the embedded microprocessor and embedded operating system. The hardware core of early embedded systems was various types of 8-bit and 16-bit microcontrollers; in recent years, 32-bit processors have been widely used for their high performance and low price. In recent years, another type of data-intensive processing chip, DSP, has emerged. Due to its special structure, specialized hardware multiplier and special instructions, DSP can quickly implement various digital signal processing and meet various high real-time requirements. With the increasing complexity of modern embedded systems, operating systems have become an indispensable part of embedded systems. Free embedded operating systems, such as Linux, have developed rapidly with their continuous improvement. Linux is a free, powerful, reliable, scalable and extensible operating system. Linux has realized many modern...
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