Hub devices and methods for initializing hub device

a technology of hub device and hub device, which is applied in the direction of digital storage, electric digital data processing, instruments, etc., can solve the problems of affecting the efficiency of hub device, the limitation of the number of ports of the host device, and the inability to improve upon the extended number of ports

Inactive Publication Date: 2014-01-16
VIA TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the number of ports of a host device is usually limited.
Therefore, how to improve

Method used

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  • Hub devices and methods for initializing hub device
  • Hub devices and methods for initializing hub device
  • Hub devices and methods for initializing hub device

Examples

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Embodiment Construction

[0030]The following description is of the best-contemplated mode of carrying out the invention. This description is made for the purpose of illustrating the general principles of the invention and should not be taken in a limiting sense. The scope of the invention is best determined by reference to the appended claims.

[0031]A novel hub device structure, which can simply achieve port extension based on the existing hub devices, is provided. The cost of manufacturing the hub device can be greatly reduced by the ability to share an external memory device therewith. In addition, in some embodiments of the invention, the cost of manufacturing the hub device can be further reduced by the ability to share a crystal oscillator.

[0032]According to an embodiment of the invention, the hub device comprises a plurality of chips and an external memory device shared by the chips. Each chip may be a hub device chip and may comprise at least one upstream port and a plurality of downstream ports for p...

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Abstract

A hub device includes a first chip, a second chip and an external memory device. The first chip includes at least a first upstream port and multiple first downstream ports. The second chip includes at least a second upstream port and multiple second downstream ports. The external memory device stores firmware data corresponding to the first chip and the second chip. One of the first downstream ports of the first chip is coupled to the second upstream port of the second chip to form a tiered hub. The first chip and the second chip are sequentially enabled and the first chip and the second chip sequentially load the corresponding firmware data.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Application No. 61 / 671,369 filed 2012 Jul. 13, U.S. Provisional Application No. 61 / 699,442 filed 2012 Sep. 11, and Taiwan Patent Application No. 102120062, filed on Jun. 6, 2013. The entire contents of which are hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The invention relates to a hub device, and more particularly to a hub device with extended port number and reduced manufacturing costs.[0004]2. Description of the Related Art[0005]Recently, more and more portable electronic devices are becoming more and more advanced, such as cellular phones, tablet computers, MP3 players, portable hard disks, global positioning systems (GPS), digital cameras, portable gaming devices, or others. Although the portable electronic devices are easy to be carried, once data transmission or system data update is required, the portable electronic devices...

Claims

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Application Information

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IPC IPC(8): G06F13/40
CPCG06F13/4063G06F13/4282G06F13/4027G06F2213/0016G06F2213/4004G11C7/1072
Inventor HO, CHIH-LONGCHEN, YI-TECHENG, WEN-HAOWU, KUO-YULIN, CHUN-HENGHUANG, PO-MING
Owner VIA TECH INC
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