Embedded Data Transmission System Design Based On CPCI

With the developing of technology, the speed of development is unbelievable, especially in the communications field, a large number of data transfer need high speed, large bandwidth and higher reliability. The new sonar system not only in military fields had an important value and role, but so in civil detection. The complete sonar system consisted of front-end acquisition, signal processing, display control, storage, playback, and many other parts, how provided fast and reliable data transmission and interconnection to sonar system is the focus of research.This paper mainly studied embedded data transmission system design based on CPCI. According to the requirements of data transmission for sonar systems, which needed the high reliability and strong real-time, the topology of the signal processing platform for transmission and interconnection, the requirements of storage playback device and display control device for signal regeneration, designed the data transmission system. In this paper the design implemented in a standard CPCI6U-size board, the paper based on the research and summarize of core technology, designed with modular approach, focused on the hardware design of the entire board, and introduced software platform support, testing, and drivers. The design based on architecture of DSP+FPGA, used high-speed serial transmission technology and control protocol, physical channel using fiber optic transmission technology, combined with high-speed LINK channels of TS201and the topology of digital signal processing platform, designed to achieve high-speed and stability data transmission and interconnection structure.In this paper, the choice of the FPGA chip based on the Virtex5series of Xilinx to achieve control logic design of PCI bus to the DSP bus conversion bridge, and protocol logic design of optical fiber, with modular design. Choosing the ADI’s TS201DSP chip as the core for data processing and data validation, achieved the board’s data checksum and algorithm. The design incorporated two different bandwidths, and each has a back up, which fully guaranteed the reliability.In this paper, after completion of the hardware and software design, built a complete hardware test platform for design specifications, and gave the test results, test data comply with the original design specifications of the design. Using of modular design in order to complete the processing architecture of hardware board based on DSP+FPGA, compared to the hardware board of conventional data transmission system based on CPCI:board to achieve minimum system; board with a variety of bandwidth optical data channel; modular hardware design. The final completion of the design ensured the sonar system under the premise of the reliability of Internet data, greatly improving the transmission efficiency, with high engineering value.