Based On Simulink And The AVR MCU Multi-Interface Audio System Simulation And Construction

With modern electronic technology, USB and SD card interface based on the technology matures,more and more abundant types of equipment,especially the wide variety of storage devices continue to apply in real life,both to increase hardware redundancy also reduces the device efficiency.In a traditional low-level hardware architecture,an interface can only be connected to the same kinds of devices. This paper presents an intelligent interface technology solutions that can be connected with an interface to heterogeneous heterogeneous devices, audio systems and intelligent interface technology combine to further improve the current device applications, improved utilization-of existing resources. This article has been microcontroller as a master unit, main control unit uses a Atmel Introduces AVR microcontroller is a relatively new microcontroller, the salient features of high-performance, high-speed, low power, combined with full the hardware codec technology and liquid crystal display technology, using an external font design to display a text message, so that the whole system controllability and visualization further enhanced to further reduce power consumption. Finally, Simulink(?) is used for dynamic systems and, embedded systems of multi-domain simulation and model-based design tools. Able to a variety of time-varying systems, including communications, control, signal processing, video processing and image processing systems, Simulink provides an interactive graphical environment and can be customized modules of this library design, simulation, implementation and testing. This study is mainly reflected in three aspects: 1. In this paper, the modeling software SIMULINK in MATLAB for system modeling and simulation, the system design process more scientific,clear, thus enabling visualization of the design process more.2. The system in the design process,using the hardware decoding and power control scheme,so that the whole system greatly reduces power consumption,although in the hardware design more difficult,but in today's "promote the green,environmental protection" under the premise of This investment is still worthwhile.3. This system uses the USB interface and SD card memory interface technology that can identify the perfect variety of U disk and memory card,and through software control,can be different interfaces to seamlessly switch between, which although in the hardware and software design added to the difficulty of a large,but the expansion of the system further enhanced.