用一个控制器硬件去识别总线请求并允许请求设备去访问总线。
A single hardware control unit will recognize a request and grant access to the bus to a requesting device.
硬件部分以针对嵌入式应用的S3C4510B微处理器作为主控制器，利用S3C4510B强大的网络功能和众多外设接口实现对现场设备的远程控制。
The hardware is based on S3C4510B as the main controller, which has powerful Internet function and many interfaces to remote control local equipment.
本文主要通过FPGA器件，利用HDL硬件描述语言，初步完成了USB设备控制器的设计和实现。
This thesis using FPGA devices and VHDL hardware description language to completed the design and realization of USB equipment controller.
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