Research And Development Of Scanning Controlling Board Of Galvanomentric Scanning System Based On Fpga

In such a long time, the application of three-dimensional galvanomentric scanning system merely relies on importing. Rapid Processing Laboratory in Huazhong University of Science & Technology has developed its own one, which Independent Intellectual Property Rights and the scanning controlling board is the key part of it. This thesis discusses about the way of designing the scanning controlling board of the three-dimensional Galvanomentric scanning system.PCI bus now is one of the most familiar bus. This thesis discusses about the interface of PCI bus and the way of using chip PCI9052, especially about the local clock, burst transfers, the address space configuration, registers configuration and so on.FIFO (First In First Out) is a way which always used as the buffer for data transfers. The thesis discusses about the designing of asynchronous FIFO (FIFO with its write clock differing from read clock.) problem and Ping-Pong operation as for the solusion of metastability.Hardware interpolation is more and more popular now because of its high speed and high timelineness. The thesis discusses about the interpolation and its application in FPGA.All clocks in three-dimensional galvanomentric scanning system are transformed from the PCI clock. Clocks are used in the scanning controlling board need frequency multiplication, frequency division and delay. The thesis discusses about the application of frequency multiplication, frequency division and delay in FPGA and usage of DCM (Digital Clock Management) from Xilinx Company.In the part of DA, latch is used in this system, and it can easily help to store data.