Dsp Data Acquisition System Usb Interface Technology

With the development of modernization of science and technology, the Data Acquisition Card (DAC) based on the traditional industry bus, such as ISA, PCI, has some defects in practice. So another kind of DAC, based upon DSP (Digital signal processing) ,with USB (Universal Serial Bus) interface, is presented, which has the virtue of flexibility, high speed, simple configuration, and is easy to update.USB is specified to be a new standard port, and it supports data exchange simultaneously between single PC and several external devices without occupancy of the interrupts of PC. And DSP has been applied in many fields because of its powerful ability of processing data. Thus, to collecting data, the strategy of combining USB and DSP is very attractive.First, the thesis describes the architecture and features of USB, including the bus attributes, the protocol definition, types of transactions, power management, and so on. After that, the thesis talks about how to develop the USB and DSP data acquisition system, including: hardware design, device software and development of the kernel device programs of USB in win98, the contents about DSP are only introduced in brief. The thesis is very useful to USB device implementers and developers. These can help them rapidly grasp the main feathers and important place in hardware design, programming of the USB device.