US 7,359,405 B2Granted

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

AssigneeAsix Electronics Corporation

InventorsYung-Ta Chan, Hsun-Yao Jan, Ming-Hui Su, Chi-Hsiang Wang

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Abstract

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.

Claims4

Dependent claims

A burst transfer mechanism of network packets having MAC frames over a USB bus in an Application Specific Integrated Circuit (ASIC) installed in a USB compliant networking device, which enables the networking device to proceed with the steps of:

when the networking device receives a Bulk I/O request packet, transmitting the Bulk I/O request packet to a USB driver installed therein;
enabling the USB driver to assemble a plurality of Ethernet packets having MAC frames together, append proprietary bytes to every Ethernet packet being received to delineate the end of each Ethernet packet, and form a super-size network packet;
transferring the super-size network packet into a plurality of USB packets having maximum packet size defined for the USB endpoint;
and
transmitting the USB packets out within a burst cycle of a Bulk In/Out transaction.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/686,562Filed 17 Oct 2003
Published: US 2005/0083968 A121 Apr 2005
Granted: 15 Apr 2008
Term ends: Not estimatedThe source records don’t support an estimate.

Classification3 codes

G06F 13/28
For access to input/output bus: using burst mode transfer, e.g. direct memory access DMA, cycle steal
G06F 13/385
Using universal interface adapter: for adaptation of a particular data processing system to different peripheral devices
G06F
Computing and data processing

Family

US 2005/0083968 A1Pre-grant publication · published 21 Apr 2005
US 7,359,405 B2This patent

From the US filing history. Foreign family members aren’t listed.

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