Stable and fast data transmission of data acquisition system interface is needed for the special characters of charge couple device(CCD)output signals. CY7C68013 chip is a USB2.0 integrated microcontroller particularly designed to fully reflect data bandwidth of USB2.0. According to the features of CCD data acquisition system,an USB2.0 interface was designed based on CY7C68013 chip to realize data unidirection transmission. This paper mainly focused on the firmware design in general programmable interface (GPIF)mode,including programming the GPIF waveforms,configuration of endpoints and FIFO first in first outRead transactions. In the experiment,data generated from external source was stored in peripheral FIFO and then transmitted by the designed interface to the host,reaching highspeed streaming data of 113.6Mb/s.
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