Design Of Peripheral Interface Of Injet Printer System Based On DSP+MCU+CPLD

At present, with great the development of packaging industry, product' s packaging becomes a flag of the product quality and the image of enterprise. The printing technique accelerates image-building of corporation and production, promotes, sales, advances work efficiency and increases economic benefit, so its applications become broader and broader. The Inkjet Printer is a production of technique- denseness, which gathers the system technologies, the modern computer information processing technologies, the cybernation technologies, the mechanical design and so on.The design of control system of Injet Printer was based on the study of the current condition and development tendency of Injet Printer technology both at home and aboard. Moreover, the design theory and some key technologies are introduced in details. The main contents are as follows:First, according to a kind of Injet Printers system, which is given by a corporation. The design aims at the development and production cost control. A new modified Injet Printer has been developed, which is simpler, more powerful, and has the advantage in system stability, makes up many defects of the original product.Second, DSP was used as a core unit on the control board and peripheral interface was developed .According to the characteristics of the system, TMS320VC5402 was chosen for the job. A great deal of researches and design were accomplished, such as the print head control IC circuit module, the memory expansion module, the detection and synchronous feedback circuit and so on.Third, according to the system' s generality and flexibility, the design of auxiliary control module was based on MCU+CPLD. The DSP and MCU interface module, the download module, the man-machine interactive module and so on were completed in this project.Finally, after finishing the design of Minimum System of Inkjet Printer, the PCB was made. Some debug was done between software and hardware.