Low-delay jitter high-speed signal exchange system

Abstract

The invention discloses a low-delay jitter high-speed signal exchange system, which comprises RapidIO, gigabit Ethernet, RS485, GPIO, radio frequency connection and the like, reserves rich interfaces,and supports higher backboard bandwidth. Eight pairs of transceivers are provided for inter-board exchange, wherein the linear rate of the transceivers can reach 6.25 Gbps, and the data exchange capacity of 50 Gbps can be theoretically provided for any board card at most. The system architecture adopts an exchange structure to replace a main control structure of PXI-e, CPCIe and the like, so thatthe overall performance of the system is not limited by a main control board any more, and the overall performance of the system is improved. Meanwhile, under an exchange type structure, any board card can send data at any time, bus arbitration is not needed, uncertain time delay increased due to bus requests and bus arbitration processes is reduced, and the method is particularly suitable for high-speed and real-time signal transmission requirements.

Description

Technical field [0001] The invention belong to that technical field of communication, and particularly relates to a low-delay jitter high-speed signal exchange system. technical background [0002] It is the physical channel between the input and output of the backplane. The traditional backplane adopts the structure of shared backplane, using the master-slave exchange mode, and all the carrier boards are controlled by the main control board. Backplane bandwidth indicates the total data exchange capacity of the switch, and the unit is Gbps, which is also called switching bandwidth. Generally, the backplane bandwidth of the switch ranges from several Gbps to hundreds of Gbps. The higher the bandwidth of the backplane, the stronger the data processing ability, but at the same time, the higher the design cost. [0003] With the increasing communication frequency, the increasing number of communication equipment ports and the increasing bandwidth of communication system bus, when tes...

AI Technical Summary

Problems solved by technology

[0004] At present, communication test equipment developed based on PXI, PCIe and other bus technologies are implemented using the main control board loading board, and all carrier boards need to exchange data through the main control board, that is, the above-mentioned types of bus equipment use the main control board as the core switching unit , has the disadvantages of bus speed limited by the main control board, large delay and large jitter

Images