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USB 接続 | サイプレス セミコンダクタ


Design Considerations

Universal Serial Bus is a specification to establish communication between devices and a host controller.  USB has effectively replaced a variety of interfaces such as serial and parallel ports.  There are approximately 2 billion USB devices sold per year.  Although USB started out primarily being used to connect computer peripherals to PCs such as mice, keyboards, printers, and external hard drives, USB has become common place in smart phones, video game consoles, communications equipment, and even in industrial applications.

Cypress is a market leader in USB, surpassing 1 Billion units shipped by 2008. With a complete portfolio of USB solutions, Cypress continues to innovate on emerging USB technologies. Cypress also provides the industry’s most comprehensive "whole product" support including software, reference designs and driver suites. これによりお客様は、製品化までの時間を短縮し、USB に関するニーズすべてを 1 ヵ所で満たせるほか、市場における競争優位性を得ることができます。

The Cypress PSoC families include options with Full-Speed USB peripheral solutions.  This enables integration of Cypress leading USB connectivity with other PSoC functions and applications leveraging the PSoC programmable analog and digital resources.  The PSoC USB solutions are powered by the easy-to-use PSoC Creator Software IDE that enables you to quickly implement various USB connectivity solutions (HID, Audio) through intuitive configuration wizards eliminating the complexity of designing with this ubiquitous interface.

アプリケーション ノート

  • This application note discusses how to implement a USB to SPI bridge using PSoC 1.

  • This application note describes the four USB transfer types: Interrupt, Bulk, Isochronous, and Control.

  • AN57294 is a foundation for understanding the USB protocol, specifically focusing on the USB 2.0 specification. It is intended for those who are new to using USB in embedded designs, and for those who need to use and understand more advanced Cypress application notes.


    USB is an interface that connects a device to a computer. With this connection, the computer sends or retrieves data from the device. USB gives developers a standard interface to use in many different types of applications. A USB device is easy to connect and use because of a systematic design process.

  • AN57473 describes the basics of the USB Human Interface Device (HID) protocol, and how to implement it in PSoC® 3 and PSoC 5LP. It explains how to configure USB input transactions using the PSoC Creator™ USBFS Component, with basic mouse and joystick inputs as examples. This application note is a prerequisite for the intermediate-level AN58726.

  • AN58726 is a continuation of basic-level AN57473. It describes additional features of the USB Human Interface Device (HID) protocol, including input and output transactions and composite devices, using PSoC® 3 and PSoC 5LP and the PSoC Creator™ USBFS Component. A variety of HID devices, including a keyboard with LEDs and a composite device, are used as examples. This application note is a prerequisite for the advanced-level AN56377 and AN82072.



  • PSoC Creator

    PSoC Creator は、最新技術を駆使したソフトウェア開発 IDE とグラフィック設計エディタを組み合わせ、他に類を見ないほど強力なハードウェアとソフトウェアの同時設計環境を実現しました。

  • PSoC Designer

    PSoC Designer は、特定アプリケーションの用件を満たすようPSoCをカスタマイズするのに使う画期的な統合設計環境(IDE)です。PSoC Designer ソフトウェアは、システム ブリング アップや製品化までの期間短縮を支援します。