Based The TMS320VC5471Digital Projector Design And Implementation

The projector is a device of the projected image. Traditional projector through the configuration of high-brightness light bulbs and projector screen, various sources of image projected onto the screen. Network digital projectors product is increased on the basis of the traditional projector the network decoding functions and management functions, to break through the traditional projector use all the constraints in data transmission, network transmission of the audio/video signal. The product has plenty of potential, has been the concern of many people in the industry, including the world-renowned manufacturers, including. The subject according to the characteristics of network digital projector equipment, research and development based on TMS320VC5471processor network solutions for digital projectors. This article describes the the overall hardware circuit design and implementation of the device, part of the software development effort.In this paper, the main work is as follows:1. An overview of the main principles of the projector of the overall composition of the program. Analyzed the functional requirements of the network projector described in the hardware on the device have a high-speed data processing capability with a powerful control capability; with operating system software. The system must take advantage of the dual-core architecture DSP chip processing power and embedded operating system’s multitasking capabilities.2. Detailed analysis the system module function theory, presents the hardware structures of each module. Schematic design focus is to meet the functional requirements is the premise of careful planning various peripheral modules. Core chip selection and peripheral module design, including video module, audio module, network module, USB module, power module hardware schematic design.3. The device PCB layout design and drawing of the debugging process and key points. High-speed signal system and special packaged chip PCB board layout, alignment. Elaborated on the special requirements of the TMS320VC5471wiring, multi-layer PCB board laminated structure, multi-layer PCB board layout and wiring design of the intermediate layer, the inner layer design, and system hardware debugging.4. Based on TMS320VC5471the uCLinux transplantation and the bootloader program design problem. The choice of operating system and software design, detailing including uClinux kernel cut Makefile file rewrite kernel code changes based on a the TMS320VC5471 Bootloader program of design, as well as the peripheral module driver design. CCS software simulation necessary discussion.