应用功能： 全速USB和快速串行异步接口 The Atmel AT76C711 is a compound USB device designed to provide a high-speed USB interface to devices that need to communicate with a host through fast serial links,like UARTs and IrDA interfaces. It is based on the AVR-enhanced RISC architecture and consists of a USB function interface with a devoted DMA controller for fast data transfers between the buffers of the USB endpoints and a shared DPRAM of 2K bytes, 2K bytes SRAM for data
