In this paper, an USB – DAQ interface unit that allows connecting data acquisition (DAQ) application to USB is presented. The unit contains two main components: USB to FIFO IC controller and application controller, designed as VHDL core for FPGA. DAQ logic can be connected to USB through simple I/O and streaming interfaces, thus development time of user application can be reduced. The design was tested with high-speed and SuperSpeed FTDI and Cypress USB – FIFO controllers.
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