Abstract: Combining the current problems faced by high-speed acquisition of charge coupled device (CCD) signals and the outstanding advantages of USB bus, a high-speed data acquisition system is designed and implemented using USB2.0 interface chip EZ-USB FX2 series CY7C68013A as USB controller, complex programmable logic device (CPLD) EPM7128S as control core, external high-speed first-in-first-out (FFO) memory and 16-bit high-speed A/D conversion module. The hardware and software design are introduced in detail. Compared with traditional design, this system has the characteristics of fast acquisition speed and high sampling accuracy.
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