Usb Host
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![]() usb host otg adapter cable for samsung galaxy s ii 2 s2 cable connector jack US $4.19
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![]() Micro USB Host OTG to USB Female Cable 4 Samsung Galaxy S II 2 S2 Motorola PC US $.89
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USB Touch Screen Bridge Solution
The CP2501 device is a touch screen USB bridge that can be used to connect the touch screen controller with the host CPU. The CP2501 incorporates a high‐performance MCU with a 48 MIPS 8051‐compatible core, 53 kB of user‐programmable flash memory and 3.5 kB of RAM.
Unlike other USB Microcontroller devices in the market, the CP2501 features pre‐programmed USB touch interface firmware, which greatly simplifies USB touch screen product development. The Windows 7 touch interface compliant CP2501 device works seamlessly with the Windows digitizer class driver for touch screens and is supported by Silicon Labs' GUI‐based configuration wizard. This deployment tool enables developers to easily and quickly connect their touch controller to a USB system without having to develop customized USB firmware, thus reducing time to market as well as the level of expertise required for USB interface development.
The CP2501 device features a USB 2.0‐compliant, full‐speed USB controller with an integrated full‐speed transceiver and on‐chip matching and pull‐up resistors. The integrated USB controller manages all data transfers on the USB bus, as well as command requests generated by the USB host controller. The user firmware uses the interface provided by the system firmware to initialize and communicate using the USB protocol. The CP2501 device also includes a USB bootloader to easily update user firmware. User code is required to enable the interface API to initialize the USB interface and send touch data to the host PC.
The CP2501 device supports three different serial interfaces for communicating with various touch screen controllers. The system firmware checks the user firmware space for the key signature. If the signature is present, USB enumeration is handled by the user firmware using the interface API. When the user firmware initializes the USB interface using the interface API, the system firmware uses the user‐customized descriptors generated by the CP250x configuration wizard to enumerate as a USB mouse or a touch‐screen device. If the key signature is not present, the system firmware assumes that the user firmware has not been programmed and uses the default bootloader descriptors to enumerate.
With the default bootloader descriptors, the CP2501 device appears as a standard HID class device that supports only the features required for bootloading. After enumeration, the host begins generating the interrupt transfer requests, and the device prepares the data to be transferred. All initialization firmware and the USB interface firmware including the configurable descriptors are generated by the configuration wizard. The developer only needs to add proprietary algorithms and bridge the data using the API provided. Having an effective USB controller within the CP2501 device is only half the job. To ease development, the CP2501 is backed by a configuration wizard that enables the developer configure a USB communication system quickly and easily. The configuration wizard features several tabs, each for a different function such as device, communication, touch, pen, mouse and GPIO. This flexible, easy‐to‐use development tool enables developers to create the firmware project files, customize USB parameters, set the touch screen resolution and generate USB HID touch screen descriptors.
About the Author
Silicon Labs - USB Microcontrollers, Ultra Low Power Microcontrollers and 8051 Microcontroller.
Our family of mixed-signal MCUs solve the system-level issues faced by designers today: we capture information using our fully-integrated analog functionality, we compute information using our highly-pipelined 8051 MCU core that is the fastest and lowest-power in the industry, and we communicate information through a variety of wired and wireless interfaces.
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GWC USB 2.0 Host to Host Link Adapter $12.99 GWC USB 2.0 Host to Host Link Adapter |
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TruLink Wireless USB Host Adapter - network adapter $94.99 C2G TruLink Wireless USB Host Adapter - Network adapter - USB 2.0 - Wireless USB 1.0 - black |
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The Host $9.99 The Host |
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Micro USB On-The-Go Host OTG Adapter(Pair) $2.16 - High quality Micro USB Host OTG adapter- It's a standard USB Micro-B Host adapter, need your machine support USB host OTG function- The Micro-B plug is for OTG device and also for power charge- Package included 2 adapters |
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Mini USB On-The-Go Host OTG Adapter(Pair) $2.16 - High quality Mini USB Host OTG adapter- Mini USB male to USB female adapter- Need your machine support USB host OTG function- The Mini USB plug is for OTG device and also for power charge- Package included 2 adapters |
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Free Shipping+20pcs/lot 10cm USB Host Cable mini a male to USB A female OTG adapter $13.79 10cm USB Host Cable mini a male to USB A female OTG adapter |
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USB Mini 5Pin /M Angled to A-Female OTG host cable 4pcs $9.99 USB Mini 5Pin /M Angled to A-Female OTG host cable 4pcs |
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Addlogix 2-Port USB 2.0 CardBus Host Controller $28.99 0.55" Thickness x 2.13" Width x 4.45" Depth 1 Year 2 2 x Type A USB 2.0 - USB 2-Port USB 2.0 CardBus Host Controller FCC Part 15B CE PC Card Interface: 32-bit, 3.3V Type II PCMCIA card (Cardbus) Supplies 500mA to one bus-power USB device Supports hot-plug and swapping of USB devices Low-Profile extended back design to eliminate dongles which is prone to breakage and misplacement Over current protection Supports optional external DC power source Supplies High-Power (500mA) to one bus-power USB device without external power supply Simple to install and setup - adding USB 2.0 support to your portable computer has never been easier. USB 2.0 offers transfer speeds up to 480Mpbs (faster than FireWire, and 20 times faster than USB 1.1), perfect for next generation of external high-speed storage devices that's available on the market today. Supported Operating Systems: Windows 98SE Windows Me Windows 2000 Windows XP Mac OS 8.6 Mac OS 9.x Mac OS X Addlogix Addlogix, Inc Cable - CardBus Hot-pluggable Mac PC PCC-USB2-2 USB Adapter Up to 480 Mbps USB 2.0 High Speed www.addlogix.com |
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Socket HC1637-1072 Serial to USB Host Cable for the SoMo 650 handheld computer $30.99 Compatibility: The SoMo 650 handheld computer Specifications: 1 x Serial connector 1 x USB connector Features: The Serial to USB Host Cable makes it easy to connect USB devices like portable keyboards, hard drives, etc. to the SoMo 650 handheld computer. |
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US $12.70
























































