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Serial bus interface circuit and method for communicating with computer

A serial bus interface, serial interface technology, applied in the direction of electrical digital data processing, instruments, etc., can solve the problem that the interface cannot expand multiple ports, etc.

Inactive Publication Date: 2010-05-19
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, although the USB interface specification allows high bandwidth, the traditional implementation of the interface cannot be scaled to provide high bandwidth for multiple ports at the same time.

Method used

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  • Serial bus interface circuit and method for communicating with computer
  • Serial bus interface circuit and method for communicating with computer
  • Serial bus interface circuit and method for communicating with computer

Examples

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Embodiment Construction

[0013] The invention has been described with reference to specific devices and implementations. Those skilled in the art will recognize that the description is intended to explain and to give the best mode of practicing the invention. For example, although described with respect to the Universal Serial Bus (USB), the present invention can be applied to any communication interface. Similarly, although described with respect to the PCI bus architecture, any similar bus architecture and protocol may be employed in the present invention. Furthermore, while described with respect to hard disks and other typical USB peripherals, the invention may be applied using any type of peripheral designed to be compatible with the invention and its implementations, and furthermore, while the exemplary embodiments describe The typical ones are three transmit controllers and three serial interface engines (SIEs), but using any number is also consistent with the teachings of the present inventio...

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PUM

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Abstract

A serial bus interface circuit (100) for use in a computer comprises a master scheduler (120) configured to communicate serial data with the computer. A plurality of transfer controllers (130) are coupled to the master scheduler and configured to manage serial tranactions. A router (140) has a number of ports coupled to the transfer controllers and selectively communicates serial data between selected ports. A plurality of serial interlaces (150) are coupled to the router and adapted for coupling to peripheral devices. In one embodiment, the serial bus interface circuit further comprises a transaction translator (160) coupled to a transfer controller and a serial interface, for normalizing the data speed. In another embodiment, the master scheduler (120) is coupled to a memory management unit (112) and communicates serial data with the memory management unit. Advantages of the invention include the ability to provide high-speed serial communication to multiple ports simultaneously.

Description

technical field [0001] The present invention relates to the general field of serial communications and, in particular, to a scalable Universal Serial Bus (USB) architecture designed to increase the available bandwidth over a USB interface. Background technique [0002] Traditional Universal Serial Bus (USB) interfaces employ a single controller for multiple ports, which creates a per-port bandwidth limit. For example, a typical PCI-based Enhanced Host Controller Interface (EHCI) USB host employs a single EHCI controller, providing only a total of 480Mbps (60Mbyte / s) of bandwidth even though as many as eight ports may be available. Philips produces a representative EHCI controller under the part number ISP1561, and the data sheet can be found at http: / / www.semiconductors.philips.com / cgi-bin / pldb / pip / isp1561.html. Eight high-speed storage devices (such as hard disks) are connected to the eight ports, so that each device should only have a theoretical maximum bandwidth of 60 M...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/38
CPCG06F13/385G06F13/4282G06F2213/0042
Inventor L·C·易C·Y·伍
Owner NXP BV