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Low-delay-jitter high-speed signal switching technology and backboard designed adopting technology

A high-speed signal and switching technology, which is applied in the field of low-delay jitter high-speed signal switching technology and the backplane designed using this technology, can solve the problem that the data transmission rate is limited by the main control board, etc., to reduce the problem of delay jitter Effect

Inactive Publication Date: 2018-10-16
CHENGDU KSW TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a bus exchange technology that does not distinguish between master and slave, so that each carrier board can realize free data exchange, so as to solve the technical problem that the data transmission rate is limited by the main control board in the existing signal exchange technology, Reduced delay and jitter problems in data exchange between carrier boards

Method used

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  • Low-delay-jitter high-speed signal switching technology and backboard designed adopting technology
  • Low-delay-jitter high-speed signal switching technology and backboard designed adopting technology
  • Low-delay-jitter high-speed signal switching technology and backboard designed adopting technology

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Embodiment 1

[0018] Such as figure 1 As shown, RAPDIO switch, Ethernet switch, reference signal and trigger signal generator, 24-way IO signal exchange and power module and multiple carrier boards, the carrier boards are connected to the backplane through connectors, each carrier board bus All are connected with RAPDIO signal, Ethernet signal, reference signal and trigger signal, IO exchange signal and power supply. The power supply module provides power for each carrier board, and the reference signal and trigger signal generator provides 100MHz reference signal and trigger signal for each carrier board. ,Such as figure 2 As shown, the reference signal and trigger signal generator receives an external reference signal (10MHz~100MHz input), after frequency discrimination and phase locking, the 100MHz crystal oscillator on the backplane is phase-locked to the external reference signal, and the The 100MHz reference signal output by the 100MHz crystal oscillator on the backplane is divided ...

Embodiment 2

[0025] The total number of carrier boards is 14, and the main control board is also used as a carrier board. The main control board runs various operating systems, applications and various drivers for controlling the carrier. All 14 carrier boards use the same structure and size , Connect to the backplane through a connector, and the carrier board connector connects RAPDIO signals, Ethernet signals, reference signals and trigger signals, IO exchange signals, and power.

[0026] In order to realize the RAPIDIO routing exchange of 14 carrier boards, we need to configure the RAPIDIO routing table (see Table 1) through the external interface. The routing table includes carrier boards 1 to 14, and whether each RAPIDIO channel is connected to other carrier boards.

[0027]

[0028] Table 1

[0029] In order to realize the IO exchange of 14 carrier boards (see Table 2), we need to configure the IO channel exchange table through the external interface. Unicom.

[0030]

[0031...

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Abstract

The invention relates to the field of communication technology, in particular to a low-delay-jitter high-speed signal switching technology and a backboard designed adopting the technology. According to the technology, an RAPDIO switch, an Ethernet switch, a reference signal and triggering signal generator, a multi-channel IO signal switching and power module and multiple carriers are included. Through a bus switching technology without master-slave division, all the carriers can realize free data exchange, the technical problem that in the existing signal switching technology, the data transmission rate and delay jitter are limited to a main control panel is solved, and delay jitter in data exchange among the carriers is reduced.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a low-delay and jitter high-speed signal exchange technology and a backplane designed using the technology. Background technique [0002] The backplane is the physical pathway between the input and output. The traditional backplane adopts the shared backplane structure and uses the master-slave switching mode, and all the carrier boards are controlled by the main control board. The backplane capability determines the throughput of data exchange, the maximum amount of data that can be throughput between the backplane bandwidth interface processor or interface card and the data bus. The backplane bandwidth marks the total data exchange capability of the switch. The unit is Gbps, also called switching bandwidth. The backplane bandwidth of a general switch ranges from a few Gbps to hundreds of Gbps. The higher the bandwidth of the backplane, the stronger the ability to proce...

Claims

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Application Information

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IPC IPC(8): G06F13/40
CPCG06F13/409
Inventor 张吉林房保卫陈开国王敏叶云涛
Owner CHENGDU KSW TECH