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Universal serial bus host machine system

A general-purpose serial bus, host system technology, applied in instruments, electrical digital data processing, digital data processing components, etc., can solve problems such as increasing the cost of magnetic core manufacturing

Inactive Publication Date: 2007-07-25
WINBOND ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Excessive pin count will significantly increase the cost of core manufacturing 20

Method used

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  • Universal serial bus host machine system
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Embodiment Construction

[0021] The following detailed description will be used to provide further understanding of the present invention, not for limitation. However, those skilled in the art will appreciate that the present invention is also applicable to other embodiments not mentioned in this detailed description. For example, familiar or known data processing techniques, hardware devices and circuits are not described in detail, so as not to obscure the understanding of the present invention due to unnecessary details.

[0022] The present invention provides a USB host system 100 in which the source hub 132 and physical layer 134 are provided separately from the core logic 120 . Referring to FIG. 4 and comparing with FIG. 3, the present invention removes the source hub 132 from the south bridge 126 and provides the source hub in a separate chip 104 (also known as external source hub with physical layer, abbreviated as ERHP) 132 and physical layer 134. Additionally, a virtual root hub 108 is int...

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Abstract

The general serial bus bar system unit system includes one magnetic core logic including coupled system unit controller and the first source line concentrator; one second source line concentrator connected to the magnetic core logic and coupled to the first source line concentrator via general medium interface; and several USB ports coupled to the second source line concentrator and external USB devices. Each of the line concentrators is coupled between one port and the magnetic core logic and may be set to connect with different ports, and the short line lengths result in less electromagnetic interference, imperfect signal and other demerits. In addition, the present invention has less pins needed and less negative effects on the magnetic core logic.

Description

technical field [0001] The present invention relates to a universal serial bus (USB) interface, in particular to a universal serial bus (USB) that provides a source hub and a physical layer in a separate chip (also known as an External Rect Hub Phy with a physical layer, ERHP for short). serial bus host system. Background technique [0002] A Universal Serial Bus (USB) is widely used as an interface for data communication or connection between a personal computer (PC) and peripheral devices such as printers and scanners. 1 and 2 are schematic diagrams depicting typical USB connections between a host system and one or more peripheral devices. [0003] Referring first to FIG. 1, a host system 10 (if implemented in the form of a personal computer) typically includes a motherboard 12, a central processing unit (CPU) 14, a basic input / output system (BIOS) 16, a memory such as, A dynamic random access memory (DRAM) 18 and a core logic 20 can be provided on the motherboard 12 in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/16
Inventor 张良熙荣蕴博朱炳盈高照庭
Owner WINBOND ELECTRONICS CORP
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