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应用功能： USB多媒体键盘控制器 The Atmel AT43USB324 is a compound USB device designed for use in multimedia USB keyboards with an embedded hub. Internally, the AT43USB324 consists of a USB hub and function interface, a hub repeater, and an AVR microcontroller. To the USB host, the embedded function appears as an attached port of the hub with its own device address and three endpoints.
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