Asix Electronics Corporation

Yung-Ta Chan

Hsun-Yao Jan

Ming-Hui Su

Chi-Hsiang Wang

Chih-Tsung Lin

Hsien-Ta Tai

Chin-Chia Kang

Chao-Jang Lee

Ming-Feng Lee

This invention relates to a single-chip USB-to-Ethernet controller that can operate either as a standalone USB-to-Ethernet controller integrated circuit chip in one mode, or the Ethernet PHY or the USB-to-Rev-MII Bridging chip in another mode, namely Dual-PHY mode, to interface with an external Network Microcontroller's Ethernet MAC for providing Ethernet and USB Device interface in a network communication system and to provide a mechanism for auto-detection and auto-selection between the Ethernet interface and USB Device interface through some Station Management Register access wherein the Network Microcontroller's Ethernet MAC can access two PHY devices through the same Station Management Interface.

Advanced single-chip USB-to-ethernet controller with a dual-PHY mode capacity for ethernet PHY or USB-to-rev-MII bridging

The present invention is to provide a burst transfer mechanism of network packets having MAC frames over USB bus, which is designed in an Application Specific Integrated Circuit (ASIC) being installed in a USB compliant networking device, enabling the networking device to assemble a plurality of Ethernet network packets having MAC frames together as a super-size network packet and, while receiving a Bulk In/Out request packet, transfer the super-size network packet into a plurality of USB packets having maximum packet size defined for the USB endpoint, and transmit the USB packets out within a burst cycle of Bulk In/Out transaction, in order to greatly improve and enhance the throughput performance of the network packets over USB bus.

Burst transfer mechanism of network packets having MAC frames over USB bus

The invention relates to a virtual processor through USB (VPTU), which is installed in a peripheral with USB interface specifications and comprises an I/O instruction decoding unit for decoding or compiling received and compiled instructions of USB packets for parsing the instructions and converting the same into instructions identifiable by an application chipset of the peripheral or a CPU of a computer in order to eliminate microprocessors and memory devices of a conventional peripheral complied with the USB interface specifications and perform operations involved in the transmission or receiving of the USB packets and storing USB interface programs and intermediate data created in the operations.

Virtual processor through USB

Growing community of inventors

Hsinchu, Taiwan

Yung-Ta Chan