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Sequence bus compound apparatus using concentrator connection layer and UTMI interface

A general-purpose serial bus, connection layer technology, applied in the direction of instruments, electrical digital data processing, etc., can solve the problem of using multiple physical layers and so on

Inactive Publication Date: 2005-04-27
SUNPLUS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a serial bus composite device using a hub connection layer and a UTMI interface, which can solve the problem that a universal serial bus composite device needs to use multiple physical layers

Method used

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  • Sequence bus compound apparatus using concentrator connection layer and UTMI interface
  • Sequence bus compound apparatus using concentrator connection layer and UTMI interface

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Embodiment Construction

[0015] figure 2 A block diagram showing a serial bus composite device using a hub connection layer and a UTMI interface of the present invention, which is connected to a host computer via a USB cable, and the device includes a USB entity layer (PHY) 210, a hub connection layer 220, a first functional connection layer 230 and a second functional connection layer 240, wherein the first functional connection layer 230 can be a printer connection layer (printer linklayer), The second functional connection layer 240 can be a scanner link layer, which is only an example for illustrating the present invention, and should not be regarded as a limitation of the scope of the present invention.

[0016] The USB physical layer (PHY) 210 transmits and receives USBD+ and USBD− signals of the USB. When the physical layer (PHY) 210 receives signals from the USB, it converts the USBD+ and USBD- signals of the USB into a UTMI (USB 2.0 Transceiver Macrocell Interface) interface signal. When t...

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Abstract

The present invention proposes one composite sequence bus device with concentrator connecting layer and UTMI interface. It is connected to system unit via USB cable. The device includes one USB entity layer, one concentrator connecting layer and several functional connecting layers. The USB entity layer is for receiving and transmitting the USB signal; the concentrator connecting layer is connected to the USB entity layer via a UTMI interface, has several downwards connecting interfaces and responds to the USB transaction of the system unit; and several functional connecting layers are connected to the downwards connecting interfaces via several UTMI interfaces.

Description

technical field [0001] The invention relates to the technical field of the universal serial bus, in particular to a serial bus composite device using a hub connection layer and a UTMI interface. Background technique [0002] Due to the rapid evolution of electronic technology, today's electronic products are all evolving towards the trend of fast transmission. In personal computers, the widely used universal serial bus (universal serial bus, USB) is also evolving from USB 1.1 to USB 2.0. In the USB 2.0 specification, its transmission speed can reach up to 480Mbits / s, which is nearly 40 times faster than the 12Mbits / s transmission speed of USB 1.1. It uses differential pair signals USBD+ and USBD- for transmission. Considering that its transmission speed is as high as 480Mbits / s, and the transmission and reception of the differential pair signals USBD+ and USBD- all involve analog technology, Intel Corporation defines a UTMI (USB 2.0 TransceiVer Macrocell Interfce) interfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/14
Inventor 唐崇文
Owner SUNPLUS TECH CO LTD
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