The Ez-usb Usb Integrated Circuit

Like a well designed automobile or appliance, a USB peripherals outward simplicity hides internal complexity. Theres a lot going on under the hood of a USB device, which gives the user a new level of convenience. For example: A USB device CAN be plugged in anytime, even when the PC is turned on. When the PC detects that a USB device has been plugged in, it automatically inter- rogates the device to learn its capabilities and requirements. From this informa- tion, the PC automatically loads the devices driver into the operating system. When the device is unplugged, the operating system automatically logs it off and unloads its driver. USB devices do not use DIP switches, jumpers, or configuration programs. There is never an IRQ, DMA, MEMORY, or IO conflict with a USB device. USB expansion hubs make the bus available to dozens of devices. USB is fast enough for printers, CD-quality Audio and scanners. USB is defined in the Universal Serial Bus Specification Version 1.1 (http:/ USB org), a 268-page document that describes all aspects of a USB device in elaborate detail. This EZ-USB Technical Reference Manual describes the EZ-USB chip along with USB topics that should provide help in understanding the Specification. The Cypress Semiconductor EZ-USB is a compact integrated circuit that provides a highly integrated solution for a USB peripheral device. Three key EZ-USB features are: The EZ-USB family provides a soft (RAM-based) solution that allows unlimited configuration and upgrades. The EZ-USB family delivers full USB throughput. Designs that use EZ-USB are not limited by number of endpoints, Buffer sizes, or transfer speeds. The EZ-USB family does much of the USB housekeeping in the EZ-USB core, simplifying code and accelerating the USB learning curve. By Cypress Semiconductor Corp.
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AN2121S Pinout, Pinouts
AN2121S pinout,Pin out
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