Direct interface method for USB (Universal Serial Bus) 2.0 bus and high-speed intelligent unified bus

A USB2.0 bus technology, applied in the field of direct interface between USB2.0 bus and high-speed intelligent unified bus, to avoid bus conflicts, avoid data loss, and realize the effect of two-way data interaction

Inactive Publication Date: 2012-10-10
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

However, this interface requires the help of DSP and FPGA for intermediate conversion of data communication, and controls the sending and receiving of data and the conversion of data format by means of handshake, which belongs to the indirect connection method between USB2.0 and RS485 / RS422. The method of directly connecting USB2.0 to the high-speed bus must be connected to the external bus through PC104, ARM, DSP, PC and other systems, and the USB2.0 cannot be separated from the system and directly connected to the high-speed intelligent unified bus

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  • Direct interface method for USB (Universal Serial Bus) 2.0 bus and high-speed intelligent unified bus
  • Direct interface method for USB (Universal Serial Bus) 2.0 bus and high-speed intelligent unified bus
  • Direct interface method for USB (Universal Serial Bus) 2.0 bus and high-speed intelligent unified bus

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Embodiment Construction

[0020] refer to Figure 1-6 , to describe the present invention in detail.

[0021] The invention is an interface method between a USB2.0 bus and an intelligent bus, which realizes the high-speed optical fiber transmission of the USB2.0 equipment through the high-speed intelligent bus and the data reception of high-speed optical fiber data based on the USB2.0 bus. The hardware structure of the invention includes a USB2.0 bus controller, an intelligent bus controller, a central bus arbitration controller and a high-speed mass memory.

[0022] In this embodiment, the scheduling and interface control of the two buses are mainly completed in the high-speed logic array FPGA, and the FPGA adopts the EP1C12 chip of the Cyclone series of Altera Corporation of the United States. The chip has a density of 12060 LE units, which can fully meet the needs of image processing algorithms and system logic control; 169 user-available I / O ports meet the system's multi-chip connection requiremen...

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Abstract

The invention discloses a direct interface method for a USB (Universal Serial Bus) 2.0 bus and a high-speed intelligent unified bus, which is used for solving the technical problem of low rate of interconnection between the existing USB2.0 bus and other buses. The method comprises the following steps: realizing the analysis on a USB standard by designing a USB controller, correctly and completelyreceiving the effective data on the USB2.0 bus, and realizing the purposes of receiving and sending intelligent bus data at a high speed through a high-speed transceiver SerDes by using a fiber channel; realizing the buffer storage of bidirectional data by a cache memory; and realizing the clock switching of buses in different rates by a clock control module so as to realize the high-speed, reliable and effective transmission of two kinds of bus data.

Description

technical field [0001] The invention relates to a bus interface method, in particular to a direct interface method between a USB2.0 bus and a high-speed intelligent unified bus. Background technique [0002] As a fast and flexible bus interface, Universal Serial Bus (USB) has the characteristics of high transmission rate, convenient use, low price, easy expansion, high reliability and low power consumption, making USB a popular interface. Technology, widely used in real-time data acquisition, industrial field control and other fields. With the development of avionics systems, the integration scale of the system is getting larger and larger, and the division of labor and cooperation of each subsystem is mainly reflected in the bus interface communication and functional calculation, thus requiring massive sensor information and image information to be realized through the high-speed intelligent unified bus. It is urgently required that the USB2.0 bus with the highest transmis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/40G06F13/42
Inventor 史忠科王闯辛琪
Owner NORTHWESTERN POLYTECHNICAL UNIV
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