Apparently an AVR with bad-ass USB device port on-chip. :P
The AT76C711’s architecture consists of a USB Interface with a devoted DMA controller for fast transfers of data between the endpoint FIFOs and the DPRAM, a 2KB internal RAM, a Synchronous Peripheral Interface (SPI), a UART supporting maximum rate of 921 Kbaud, an 8x16-bit in-system SRAM for microcode storage (which is loaded from the SPI controller), 2K dual-port RAM (DPRAM) and a programmable DMA controller for packet transfers between the UART and the DPRAM without microcontroller intervention.
This looks really cool, but I have never heard of this before, not even at any of the Atmel seminars..
Check out the link, there is a datasheet available also..