USB FIFO interface for FPGA based DAQ applications

This paper describes an universal interface design that allows to connect data acquisition application (DAQ) to USB bus using FPGA as a controller and USB FIFO integrated circuit as an USB protocol implementation. The designed USB FIFO to DAQ IP-core can connect a digital part of DAQ application to USB through simple I/O and streaming interfaces. The core can be used with FTDI USB FIFO ICs and Cypress EZ-USB controllers.