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使用 USB 到 PCIe 桥接器访问高速外设 1 min Guide Books 设备上的PCIe将长期存在，您不需要依赖带有大卡的边缘连接器来访问外围设备。通常通过PCI/PCIe通信的设备需要与像复杂的FPGA或MPU这样昂贵的主控制器接口，这限制了这些应用仅用于计算机系统。现在，随着市场上嵌入式处理器组件的丰富，设计师可以在不购买昂贵的FPGA或MPU的情况下访问PCIe。 通过USB使用精简的MCU或SoC访问PCIe外围设备的USB到PCIe桥接计算机是一个绝佳的选择。虽然您通常需要支付高昂的价格才能将多通道PCIe接口集成到您的主控制器中，但一个较便宜的MCU配备USB到PCIe桥接控制器可以通过熟悉的USB 2.0或更高接口访问~Gbps级PCIe外围设备。继续阅读，看看这些设备如何融入嵌入式领域。 接口桥接IC的价值 接口桥接IC的操作理念相当简单：将来自一个高速数字接口的数据作为输入，并在输出时将其转换为不同高速数字接口的信号格式。市场上有一系列这样的组件，旨在提供多个高速协议之间的接口。Microchip的LAN产品线就是一个例子，用于桥接到以太网；一些示例产品包括 LAN7430 PCIe到千兆以太网桥接器和 LAN7800 USB到以太网桥接器。 对于计算机外围设备或其他高速组件，USB到PCIe桥接基本上像SerDes控制器一样运作。这些组件可以将来自多个PCIe通道的并行数据转换为通过USB 2.0或更高版本的串行数据。这样，数据速率将是PCIe接口或USB接口提供的最小值。确保关注桥接组件支持的PCIe世代；大多数桥接IC支持Gen2。 一些USB到PCIe桥接组件 Diodes Incorporated PI7C9X442SLBFDE Diodes Incorporated的 PI7C9X442SLBFDE提供了一个接口，可在多达3个PCIe通道和四个USB 2.0控制器接口之间进行连接。该设备上的USB端口可以支持所有可用的速度，包括USB 2.0规范下的高速（HS）、全速（FS）和低速（LS）。通过一个集成的开关在PCIe链接和集成的USB接口之间提供路由，封装为126引脚。 阅读文章
Guide to Using Ferrite Beads in a PCB Ebook: Guide to Using Ferrite Beads in a PCB 3 min Guide Books Ferrite beads in a PCB are the stuff of myth, but there are legitimate uses for ferrite beads and other ferrite components. In this e-book, we’ll examine some uses of ferrite beads in a PCB, as well as other magnetics. 阅读文章
US PCB Manufacturing US Congress Proposes Support for American PCB Manufacturing 5 min Engineering News Meet the Supporting American Printed Circuit Boards Act of 2022, proposed in the US Congress by Reps. Moore and Eshoo. 阅读文章
Advanced Topics in High-Speed Design 1 min Webinars This track is for the engineer who understands high-speed design requirements and wants to learn design practices to help ensure 阅读文章
Stop Surprises by Assuring Your BOM is Always up to Date 1 min Webinars The electronics industry is constantly changing, especially when it comes to the supply chain. Components are constantly going out of 阅读文章
Stop Surprises by Assuring Your BOM is Always up to Date 1 min Webinars The electronics industry is constantly changing, especially when it comes to the supply chain. Components are constantly going out of 阅读文章
Stop Surprises by Assuring Your BOM is Always up to Date 1 min Webinars The electronics industry is constantly changing, especially when it comes to the supply chain. Components are constantly going out of 阅读文章