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多功能USB扩展转换接口电路设计

更新时间:2020-10-24 09:23:48 大小:229K 上传用户:zhengdai查看TA发布的资源 标签:usb接口电路 下载积分:2分 评价赚积分 (如何评价?) 打赏 收藏 评论(0) 举报

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针对目前智能仪器仪表及手持终端设备扩展接口数量不足、协议标准单一的问题,设计了一款多功能USB扩展转换接口电路。基于USB接口扩展芯片,将一路USB主端口扩展成四路从端口。其中一路从端口经协议转换芯片转换成RS232协议接口.一路从端口转换成以太网接口,其余两路端口直接作为USB扩展端口使用。通过实测和实际工程应用检测验证,该多功能USB扩展转换接口电路功能完备,性能稳定可靠,适合便携设备功能扩展和系统集成场合应用。

In order to solve the problems of extension interface shortage for intelligent instrument and hand-held terminal device and single protocol standard, a muhifunction extending and converting interface circuit for USB is designed in this paper. Based on the extended USB IC, one USB master port is extended into four salve ports. One of the slave ports is converted to RS232 interface by a special chip that can be used to transform protocols, and one slave port is converted into Ethernet interface. The other two slave ports are directly used as USB extension interfaces. Testing and practical project applications prove that the functions of this device are perfect, that its performance is effective and stable, and that it is suitable f...

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多功能USB扩展转换接口电路设计.pdf 229K

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