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Time-triggered Ethernet exchange controller and control method thereof

A switching controller and time-triggered technology, applied in data switching network, time-division multiplexing system, digital transmission system, etc., to achieve the effect of ensuring reliable transmission, simplifying configuration, and good determinism

Active Publication Date: 2017-11-10
XIAN MICROELECTRONICS TECH INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant technical record on the time-triggered Ethernet switch controller, and the general Ethernet communication and switching methods cannot meet the requirements for high reliability, high certainty, and high real-time performance

Method used

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  • Time-triggered Ethernet exchange controller and control method thereof
  • Time-triggered Ethernet exchange controller and control method thereof

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] see figure 1 The bus interface module 1 of the Ethernet switching controller of the present invention realizes the data exchange between the external bus and the on-chip bus, and the external bus can access the switching port module 2, the clock synchronization module 4, and the TT frame transmission time calculation module through the bus interface module 1 5. Port mirroring module 8. Forwarding configuration table module 10. The switch port module 2 is the core module of data processing, which is composed of 12 switch sub-port modules. The structure of each switch sub-port module is as follows: figure 2 shown.

[0024] The controller of the present invention mainly includes eight modules: a bus interface module 1, an exchange port module 2, 6 TT exchange control modules, a BE exchange control module 7, a clock curing module 3, a clock synchronizat...

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Abstract

The invention discloses a time-triggered Ethernet exchange controller and a control method thereof. The exchange controller comprises a bus interface module which is used for realizing data exchange between an external bus and an on-chip bus; a port mirroring module which is used for carrying out data debugging; an exchange port module which is used for carrying out key data analysis on received data frames; and a clock solidifying module which is used for restoring a synchronous data frame clock solidifying points. The exchange controller also comprises a TT frame transmission moment calculation module, a TT exchange control module, a BE exchange control module and a clock synchronization module connected with the clock solidifying module. According to the exchange controller and the method, legality judgment and traffic management are carried out on data through the exchange port module; the TT frame transmission moment calculation module finishes hardware real-time calculation of a TT frame transmission moment, and the data transmission moment configuration is simplified. Through combination of a virtual link and time slot division and through adoption of multi-priority scheduling and time slot locking technologies, the clock synchronization module realizes time compression processing in a pipeline mode, and fault isolation and recovery are supported.

Description

technical field [0001] The invention belongs to the field of time-triggered communication, and in particular relates to a time-triggered Ethernet switching controller and a control method thereof. Background technique [0002] The currently used Ethernet switch controllers adapt to the general Ethernet standard and use event triggering methods, which cannot guarantee absolutely reliable data transmission, and are prone to network congestion, resulting in data frame loss or network delays greater than the expected range. [0003] The time-triggered switching controller adopts the time-triggered mode to ensure the time synchronization of each node in the network. On this basis, the reliability and real-time performance of data transmission can be guaranteed by rationally planning the network bandwidth. [0004] In the relevant patent achievements that have been disclosed: the cluster coupler in the time-triggered network (Chinese patent CN101512987A) theoretically introduces a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J3/06H04L12/801H04L12/931H04L12/939
CPCH04J3/0652H04L47/12H04L49/208H04L49/557
Inventor 卢飞赵海婷王瑞晓唐雷雷曲超哈云雪
Owner XIAN MICROELECTRONICS TECH INST
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