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RapidIO-based transmission device and RapidIO-based reception device

A technology for receiving devices and sending devices, which is applied in the direction of instruments, electrical digital data processing, etc., and can solve the problems of reduced transmission rate, increased system overhead, and CPU failure to work normally, etc.

Inactive Publication Date: 2017-03-22
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will greatly increase the CPU system overhead, reduce the transmission rate rapidly, and even cause the CPU to fail to work normally.

Method used

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  • RapidIO-based transmission device and RapidIO-based reception device
  • RapidIO-based transmission device and RapidIO-based reception device
  • RapidIO-based transmission device and RapidIO-based reception device

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Embodiment Construction

[0024] In order to better understand the present invention, the present invention will be further described in detail below through the accompanying drawings and examples.

[0025] This embodiment is to improve an existing RapidIO-based data transmission system, mainly including extending the RapidIO data frame, utilizing the spare field in the Doorbell, and improving the structure and control logic of the sending device and the receiving device .

[0026] The extension of the RapidIO data frame is mainly reflected in the addition of 1 byte of information after the original RapidIO data frame. The upper 7 bits of this information bit represent the effective data length, and the lowest bit represents the data read flag information. When the sending device sends the RapidIO data frame to the window space, the data read flag information of the RapidIO data frame is set to unavailable. Read: when the receiving device reads the RapidIO data frame from the window space, it sets the...

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Abstract

The invention discloses a RapidIO-based transmission device and a RapidIO-based reception device. The transmission device is used for transmitting a RapidIO data frame to a window space of the reception device according to a Doorbell returned by the reception device and marking effective data length information and a data reading mark as unread at an information bit of the window space; and the reception device is used for reading the RapidIO data frame according to the information bit of the window space, updating data mark information as read and returning a finally read window sequence number to the transmission device through the Doorbell. According to the transmission device and the reception device disclosed by the invention, the system overhead is greatly reduced and the transmission speed is improved while the chronesthesy is ensured.

Description

technical field [0001] The invention discloses a RapidIO-based data transmission system, belongs to the field of high-speed data transmission, and in particular relates to a data transmission system for improving transmission rate and transmission time delay. Background technique [0002] RapidIO is an open interconnection technology standard, which is applied to interconnection systems between chips and boards. It has the characteristics of high transmission efficiency, flexible topology, and high reliability, and has been widely used in various systems. [0003] In some transmission systems based on the RapidIO interface, there are high requirements on time-sensitive performance and transmission rate. Considering the time-sensitive factors and the fact that the data is not transmitted at a uniform speed, the data rate has a large randomness, so only short data frames can be used. When the instantaneous transmission rate is high, a large number of doorbell transactions (D...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/42
CPCG06F13/4221
Inventor 周续李金喜
Owner CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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