MVB/USB adapter based on SOPC technology and communication method thereof
An adapter and technology technology, applied in the field of network communication, can solve the problems of slow speed, short distance, complicated PCI interface card programming, etc., to achieve the effect of convenient connection and fast transmission speed
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[0039] The preferred embodiments will be described in detail below in conjunction with the accompanying drawings. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.
[0040] figure 1 It is a structural block diagram of the MVB / USB adapter based on SOPC technology. figure 1 Among them, the MVB / USB adapter includes FPGA controller, USB controller, MVB physical level conversion module, power conversion circuit, reset circuit, status light display circuit and DB9 interface. The FPGA controller is connected to the MVB physical level conversion module through three signals RXD485, TXD485, and TI, and the MVB physical level conversion module is connected to the DB9 interface through RS485+ and RS485-. Each signal is defined in the following table (Table 1):
[0041] Signal definition significance RXD485 Receiver of MAX485 Connect to the MVB input of the FPGA contr...
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